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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 6, 2013
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Open Help Requests for All Makes and Models
Help Request Answers
2006 Acura TL 3.2L Flashing check engin VIN: 19UUA662X6
Hi Guys Customer states under extreme acceleration and redlining the engine on freeway. [One can not have THAT much fun without consequence!!!] The check engine light flashed then turned off completely but now has a strange harmonic noise at freeway cruse spe... Trouble codes: P0420
1991 Audi 100 2.3L No Start, Poor Idle Quality, Stall
after head job,car wont run.starts and quits.have to pull up on fuel distributor plate to get to run at 2000 rpm.timing dead on.compression good,fuel pressure good.when loosen off lines at fuel distributor no fuel coming out. but fuel pressure good. not sure w...
1992 BMW 525i 2.5L Clutch Master Cylinder VIN: WBAHD5312N
Cust brought own parts. Installed clutch master cylinder. Pedal very low when master cylinder installed. Checked part with two different suppliers. Checks ok. Master cylider bolt up very basic. Wondering if parts are missing. Possible bracket. Mitchell gives c...
2003 BMW Z4 3.0i 3.0L comprehensive component monitor VIN: 4USBT534X3
need to inspect vehicle but will not set comprehensive component monitor.performed drive cycle many times. vehicle has no stored trouble codes. called bmw to check for recalls and tsbs. found no related. this is a continous monitor so should set with no drive ...
2005 BMW 760Li 6.0L low power VIN: WBAGN83505
the car come to us from BMW per customer request & we found both cats melted so we ordered & put them both on now the whole lft side is not running we can add fuel into a vacuum port and get it to run. has anybody seen this before. thanks in advance
1995 Buick Riviera 3.8L eng temp gauge VIN: 1G4GD221XS
1995 Buick riviera came in with the temp gauge inop and prndl on dash stuck on drive. the prndl i thank is the position switch on the shifter but the temp gauge ican't fix. I have ohm both uart data wires from the pcm to the instr. cluster both were .3 to .4 o...
2000 Chevrolet Venture 3.4L wiper function intermittent VIN: 1GNDX03E2Y
First thanks to all you iatners that took the time to look at this problem. now i have this 2000 venture that has given me a pain for the past year with these wipers. original concern was wipers no parking. (bad motor and top gear) replace wiper motor and top ...
2001 Chevrolet Tracker 2.0L Poor Idle Quality VIN: 2CNBJ13C31
Hey guys i am really stumped on this one,it is killing me!The t.chain broke on this thing and the owner put a new one on his self.once installed it ran but had a misfire poor idle and low compression on two cylinders.It was brought to me and we took the head o...
2002 Chevrolet Monte Carlo SS 3.8L Stall
Hello I have this 2002 Monte SS with a 3.8L. It came in behind a wrecker with a no start. Ckd codes and it had a P0101. Cleared codes and vehicle started. Ckd power, ground and signal at sensor with lab scope, looked good. Ckd wiring to ECM ok. Replaced pigta... Trouble codes: P0101 (MAF sensor)
2003 Chevrolet W4500 Tiltmaster W4S042 4.8L Shifting
I have a 2003 w4500 all the gauges stoped working, over drive light and indicator lights not working, does not shift when you put it in drive it just stays in the high gear if you manualy shift it drives fine
2005 Chevrolet Uplander LT 3.5L converter VIN: 1GNDV33L95
Transmission has loud whining sound, slow response when cold, and very burnt fluid. Code P0741. Do I replace trans or replace components? Please point me in a direction. Thanks al
2005 Chevrolet Malibu Maxx LT 3.5L Sterring VIN: 1G12S52FX5
The car came in for the power sterring issues that these had. Replaced tourqe sensor. Calibrated aligned. The problem is when you take off it has pretty bad tourqe steer. At first we thought the sensor. Started digging deeper and after ALOT of time and headach...
2008 Chevrolet Cobalt LT 2.2L air bag VIN: 1G1AL15F48
This car was in crash and air bags went off, customer replaced sdm module and air bags, now it has a code b0081 symtom 71 pps ,invalide serial data in the air bag module and so I scaned the passenger presence and it has lots of codes that wont clear, b0015 , 2...
2013 Chevrolet Silverado 6.6L Remote Start
I have a customer that has just purchased two of these trucks and would like for the factory remote start to be activated. They do not have the remote start key fobs. I know it can be added later on. My question is, is there a minimum number of remote start fo...
2001 Chrysler Sebring LXi 3.0L No Start VIN: 4C3AG52HX1
Gentlemem We have a car from another gargae the quit running on the road. They installed a fuel pump for the no start than found the problem was a no spark condition. That was October. We got the car and are tracing the problem. We found the fuel pump does wo...
2004 Chrysler Pacifica 3.5L hvac box VIN: 2C8GM68454
This car came in with a complaint of noise under dash.very intermittent.We finally got it to act up.noise is coming from hvac box.If you put your hand on bottom of the hvac box where the cabin filter is put in.Its vibrating.It sounds like a vaccum leak,once it...
1987 Dodge Ramcharger Royal SE 5.2L bulkhead connector VIN: 3B4HW12T0H
I get this Ramcharger, open the hood,& WOW what a wiring hack job. Having a long discussion with the coustomer we are going to change this over to a simple HEI with vacuume advance (part # PC6006 from Pro Comp). Now I've got all the wiring diagrams off mitchel...
1995 Dodge Stratus ES 2.5L No Start VIN: 1B3EJ56H5S
Vehicle came in on hook no start installed crankshaft sensor has good compression fuel pressure is good at 50lb psi have spark and injector pulse have replaced distributor as a known high fail item new cap rotor and wires timming is correct will not start also...
2004 Dodge Caravan SE 2.4L MIL Lamp on VIN: 1D4GP25B34
Hey guys, got an 04 caravan with a 2.4L 4 cyl here. I was given this car by another tech who said that it needed a PCM flash update for this p0420 code. So, me being me, I decided to check a little further into it. I can't find any flash updates available for ... Trouble codes: P0420
2005 Dodge Ram 1500 ST 5.7L camshaft VIN: 1D7HU18D25
Customer complaint of tapping noise in engine. Oil pressure good. Verified lifter noise and tore down right head. Found #2 exhaust lifter roller 1/4 gone, scored camshaft. All other lifters have pitting like a metallurgical defect. We will end up pulling the p...
2006 Dodge Ram 2500 SLT 5.9L No Start VIN: 3D7KS29C16
Hey guys got a 5.9L no start. Vehicle will fire and die if ethered. NO codes Customer said it was driving fine, he shut it off and when he went to restart it, it would start and die. It has always been dead for me. It had never had a fuel filter at60k so i ins...
2001 Ford F-250 Super Duty Lariat 5.4L Stall VIN: 1FTNW21LX1
Good morning all, This vehicle will not idle when cold, has a K&N cold air system on it, no codes, we did spray intake both when cold and warm, no change in idle, once warm, about one minute depending on outside temp, idles fine. Thanks, Tim
2002 Ford Explorer XLS 4.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1FMZU72E92
Ok guys, thanks for the help on this one. Here is the story; this is my own car, I bought this car from a customer last year who could not afford to pay his bill, and was going to scrap it. The timing chain guides broke and crashed the valves. Since the genius... Trouble codes: P0172 (System Rich Bank 1)
2003 Ford F-350 Super Duty XLT 6.0L Excessive Emissions, No Start, Poor Idle Quality, Misfire VIN: 1FTSW31P33
When engine is hot, it runs absolutely fine, sounds good, lots of power, starts good, etc. But vehicle will barely start in the morning. I cycled glow plugs 3 times, then cranked engine for 15 seconds straight. It puffs white smoke from tail pipe as each cylin... Trouble codes: P0266 (Cylinder 2 contribution or balance malfunction)
2004 Ford Taurus SE 3.0L Misfire, MIL Lamp on
Sorry for no vin car is not here now. This came in with p0300 random misfire code. You can almost feel a very slight miss at idle. Has a poping sound like "popcorn" coming from air filter. Not sure what is causing noise anyone see this before? I have a feeling... Trouble codes: P0300
2005 Ford Escape XLT 3.0L Noise VIN: 1FMYU93155
This Escape is baffling to all of us here in the shop. Customer originally came in for noise from engine that was rpm related. Best way I can describe the noise is back in the day when we used to put baseball cards on our bicycle spokes. Imagine that noise onl...
1999 GMC K1500 Suburban SLE 5.7L Misfire, MIL Lamp on VIN: 1GKFK16R5X
hello im matt from daves downtown conoco i am 19 years old and this is the first time were using iatn. yesterday this suburban came in with a misfire. first thing i checked the scanner for codes and just said po300 for the misfire so i went into data and seen ... Trouble codes: P0300, P0135, P0141, P0430
2003 Isuzu Ascender 4.2L alternator and igniton coil
Since the last repair to the vehicle the customer returned with another misfire and ignition coil failure. The ignition coil failed on number 3 this time. But now the alternator is not charging again. Now this alternators is a remanufactured from the local par...
1997 Jeep Grand Cherokee Laredo 4.0L shuts down injectorsasd relay VIN: 1J4FX58S3V
This vehicle will start and go dead. The only signal it looses is to the injectors. there is no security system on this vehicle. Bus ckt 3 & 11 both have 12.4. ASD relay and ign switch circuts are good.Confirmed with Dealership that this veh. has no security s...
1995 Mazda MX-6 LS 2.5L No Start VIN: 1YVGE31D7S
To anyone who wants a challenge. I posted this problem earlier in 2012 and as you guessed it, no luck getting this car fixed. Last September, this customer brought this car in and said the car won't run below 50 degress. He had the car a year before the proble...
2000 Mazda Miata 1.8L Hesitation VIN: JM1NB3533Y
Ok guys, I feel like I am loosing my touch here. Can not seem to figure this car out. Customer stated car hesitates on acceleration. Customer replaced the spark plugs, but did not help. First I pulled codes and found an EGR excessive code plus an intake temp s...
2004 Mazda RX-8 1.3L control circuit VIN: JM1FE17N94
I have a 2004 Mazda rx8 with 1.3 engine. The code is P0076 VDI control solenoid circuit low. I have limited dignostic information it appears there are three solenoid that are the same part number mounted at the same place near the oil fiil. Does anybody know w...
1992 Mercedes-Benz 400E 4.2L Cuts out, Stall VIN: WDBEA34E4N
The car was towed to our shop. Scanner revealed a multitude of codes, we checked the wiring harness and found it was deteriorated, replaced the harness and crankshaft sensor, car runs until warm then stalls as before, under current codes is only the crank sens... Trouble codes: 17 (Crank position Sensor), 22 (o2 Sensor heater), 30 (input signal front right central lock open circuit)
2001 Mercedes-Benz S430 4.3L Mechanical VIN: WDBNG70JX1
Hello everyone, we recieved a towed in vehichle from another shop. The previous shop replaced the MAF sensor but didnt fix the problem. They recomeded the whole throttle body be changed but the customer wanted a second opinion because of high estimate. We repl...
2003 Mercedes-Benz ML350 3.7L No Start VIN: 4JGAB57E43
I have a 2003 ML350 with a no start, no crank with a "Start Error" message in the cluster Codes Found: AAM - B1858-002 (9858-002) two-way radio signal; the programmed code is OK but the programmable code is not syncronized DAS - B1703-002 (9703-002) the prog...
2006 Mercedes-Benz E350 4Matic 3.5L MIL Lamp on VIN: WDBUF87J16
heres the story scanned car as driver complained of low heat and engine running cold got a code for thermostat performance ,, just one code changed thermostat and filled cooling system and road tested car to verify heat ,, cleared codes all was fine now... Trouble codes: P2008, P0446, P2008, VAR1A, 1NTAK, SW1TC, VA1VE, 0PEN, P0412, P0418, P00, 128 (thermostat valve open circuit)
2005 Nissan Maxima SL 3.5L Brake Lights VIN: 1N4BA41E65
Thanks in advance for help. The brake lights stay on all times. switch is good, i have 12v both sides of switch. Disconnect connector m81 going to rear of car and lights go off. Disconnected connector m90 and m81 pink/blue wire has 12v at all times. The base d...
2006 Nissan Altima S 2.5L Window Operation VIN: 1N4AL11D16
Customer came in said the window won't stay up. What is happening is it will go all the way up than back down a third of the way. Is there a way to program these or what is the fix. Thanks in advance for the help.
2010 Nissan Rogue S 2.5L Misfire VIN: JN8AS5MV4A
Customer complaint of engine light flashing,starts then dies. Only one code stored p0300.Vehicle runs smooth in shop but we can sometimes get a very slight misfire under light aceleration on test drive.The second day we got a P0304 and replaced one coil. P0300... Trouble codes: P0300 (Random misfire)
2001 Oldsmobile Intrigue GX 3.5L Cuts out VIN: 1G3WH52H81
Hey fellow technicians, I have a 2001 Olds Intrigue that has a ghost problem.Intermittently when coming to a stop the vehicle will stall out. Some times it will start right back up and most of the time it takes numerous tries to restart. The customer claims us... Trouble codes: P1372 (Crank sensor), P0300 (Random misfire)
2004 Saturn Ion-2 2.2L Stall, Misfire, MIL Lamp on VIN: 1G8AJ52F44
Car was towed in customer couldnt keep running. Has obvious misfire, installed know good coils and icm no change. Data shows no pulse signal on injectors 3 and 4. wiring shows good to ecm. Any ideas would be great. Trouble codes: P1599 (Engine stall), P0341 (Cmp signal), P0300 (Random misfire)
1996 Subaru Legacy LS 2.2L MIL Lamp on VIN: 4S3BK4553T
I am hoping somebody out there may be able to give me some kind of insight on this code.I pulled this P1401 trouble code today.There isn't any documentation in Mitchell,Identifix only gives me a definition of (fuel tank pressure control system performance);pos... Trouble codes: P1401
1997 Toyota Camry CE 2.2L guage fuse 10 amp VIN: 4T1BG22KXV
car came in with an intermitant blowing of the guage fuse. after replacing twice, the fuse blowing has now become very frequent. i have disabled most of the components on the description in mitchell, i have read the post of fixes for the same on this model/mak...
2007 Toyota RAV4 3.5L Charging VIN: JTMBK33V87
Believe it or not this is the first time,other than brake pads, tires and oil changes that I have worked on this vehicle. It is my wifes and something finally failed ! That being the water pump. Thanks to IATN past tech help requests I have no problem changing...
1999 Volkswagen Beetle GLS 2.0L power windows VIN: 3VWCA21C8X
We have not seen this car before but has been other places. The customer says the windows open during the night and we have not seen this happen the week we had the car. I have read one other issue like this on a passat on iatn and need to know if these beetle...
2000 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWMA23B5Y
I have this Passat that has 3 ports on the secondary air vac solonoid, one goes to the combi valve one goes to the intake and a third port (next to electrical connector) that has a rubber elbow but no hose. I cannot find where the hose should go. Niether Mitch... Trouble codes: P0411
2006 Volkswagen Jetta TDI 1.9L Wipers VIN: 3VWDT71K26
Wipers inoperative tested hood latch and power and grounds at wiper motor ok. Codes 02071 local databus no signal/comminication code 00153 windsheild wiper motor no signal.These codes are out of 009 module j519. Tried commanding on no response it appears the l...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2002 Audi A6 Quattro 4.2L cam/crank sensor VIN: WAUML64B82
we figured out the problem, turns out passengers side chain tensioners guide was missing on the bottom,will be expensive repair considering 1 tensioner costs $700 + 7-8 hrs labor. Thanks to all that replied, we were kinda thinking the same thing until we took ...
2004 Audi A4 Quattro 1.8L #2 cylinder VIN: WAULC68E24
Most all of the replies told us to check for cracks!!! So, We took it apart again and had a machine shop perform a leak test and it was cracked in the combustion chamber between the valve seats which is a pretty common occurance with these heads--we just got ...
2008 Buick Lucerne CXL 3.8L No Start VIN: 1G4HD57298
Because we were never able to duplicate the problem once the circuit started working properly, the customer paid for the diagnostics we performed and picked up the car. But from the posts and my gut feeling I have informed the customer that if it occurs again... Trouble codes: P0230 (Fuel pump relay control circuit).
2007 Cadillac CTS 3.6L climate control VIN: 1G6DP57757
this one is fixed. i guess i got to many pages ahead in the book this is a single heater core system. dual zone system. heater core was plugged. flush the core several times. solved the problem. the way the heater core mounts makes the driverside lose heat as...
2002 Chevrolet Silverado 2500 HD 6.6L Surge VIN: 1GCHK23152
Thank you to all that responded to my request for help, The fix was a worn egr throttle plate shaft. When the throttle plate was commanded closed, due to the slack in the shaft It was going all the way closed past the stop screw not allowing any air to bypass ...
2003 Chevrolet Trailblazer North Face 4.2L ecm VIN: 1GNDT13S73
Okay so after doing everything i could possablily do or try, had a GM master tech come down 1 nite and help with the problem at hand, after several hours we found the problem, the bcm was flashed, but for some odd reason it didn't take the full program, so eve...
2012 Chevrolet Silverado 1500 LTZ 5.3L Misfire, MIL Lamp on
Thanks to all the techs that responded. I ended up going with my gut insticnt and repalcing the ecm and voila, the vehcile is fixed. Instantly o2 reading were correct for right side. I went through fairly extensive testing for all the wiring on the right side ... Trouble codes: P0300, P0175, P0059, P0060.
2001 Chrysler PT Cruiser 2.4L Poor Idle Quality, Misfire VIN: 3C4FY4BB21
I let this car go about 2 weeks ago now, and I talked with the customer yesterday, and he stated that everything was fine. What I did was I replaced the ECT and the IAT, since they were never equal when I would check them in the morning, they were always a fe... Trouble codes: P0401 (EGR Valve failure to affect F/A mixture), P0115 (Engine coolant temp circuit high voltage), P0123 (Throttle position sensor voltage high).
1998 Dodge Ram 1500 ST 5.9L No Start VIN: 1B7HF16Z6W
Even though I had spark at coil and plugs I went ahead and replaced plugs wires and warrantyed out the cap and rotor it started up and ran fine...After looking close at the cap I noticed that the center contact was half missing... Thanks for all the great idea...
2003 Dodge Ram 2500 5.7L Electronic VIN: 3D7KU28D43
Hi all I forgot about this post. I'm glad I came back to look before iATN closed it for me. All the vents were fine. The guy said the heat worked poor for some time, then suddenly not at all. That does sound like vents... one vent half broke off making ha...
2005 Dodge Ram 2500 SLT 5.7L MIL Lamp on VIN: 3D7KS28DX5
2006 Dodge Charger R/T 5.7L Accessories VIN: 2B3KA43H46
Afternoon techs, sorry it take so long to post the repair. It turned out to need to be re- learned by the dealer. Thanks again Steve [...]
1997 Ford F-250 Lariat 7.3L MIL Lamp on, Hard start cold VIN: 1FTHX26F4V
after looking at this for many hours the fix was simple, california 7.3 and econoline are the only vehicles that use the plastic base and metal shunt located next to gpr. the metal strap or shunt? that goes from gpr to plastic block with glow plug wires attach... Trouble codes: P1931 (4 glow plugs open right bank), P1393 (4 glow plugs open left bank).
2001 Ford Explorer Sport 4.0L Speedometer/Odometer VIN: 1FMCU70E01
Found that on test drive odometer/speedometer is likely, but not always, to drop out on right turns. Scan tool points to speed sensor but could be a wiring problem. Since vehicle is scheduled for brake and front hub service will repost when all work is comple...
2005 Ford F-250 Super Duty King Ranch 6.0L Transfer Case VIN: 1FTSW21P75
2006 Ford Mustang GT 4.6L alternator VIN: 1ZVFT82H76
Well.as.of.current.I have not.heard back from customers again so I assume.all.is.well. when it left my shop everything ran and tested OK. Went back to body shop for do.overs with door panels and door.locks they left undone. I will repost with any updates. Than...
2007 GMC Sierra 1500 SLT 5.3L stereo VIN: 3GTEC13J17
sorry for late fix.we recommended to the customer a radio.one time we hit the top of dash and started working.replaced with factory replacement.works awsome.thanks for input
1985 Honda Civic 1.5L Excessive Emissions VIN: JHMAK5430F
The conclusion was to get a cat. It did bring down all the readings. HC passed and Nox was barely evident anymore (down to 2 ppm @ 15mph). But still had a problem with CO. Passed @ 15 mph but still too rich @ 25mph.Got an 02 sensor and that took care of it. ...
2008 Honda Accord LX 2.4L No Start VIN: JHMCP26408
thanks to all who helped. pulled valve cover and verified timing chain had jumped. vehicle had no oil when pulled in. believe from continuous trying to start with contaminated fuel and no oil allowed this to happen. removed cylinder head and replaced all relat...
2002 Isuzu Axiom 3.5L engine noise VIN: 4S2DF58X02
still working to resolve this issue. i will post as soon as i have fixed it. thanks again to everyone who replied.
1998 Jeep Wrangler Sport 4.0L Hvac Control VIN: 1J4FY19S2W
Ended up taking switch apart and repairing electrical connections in switch. Never did find a new one anywhere. I appreciate all the help. Please note the trademotion link that Mike sent me tried to run a scam on me. Told me they had the unit, then changed the...
2001 Lincoln Continental 4.6L No Start VIN: 1LNHM97V51
I only got the car back from the customer 1 time sense opening the reply. It was 10 days before it did the crank & no start. But it finely started and she brought it in. Again it would start every time for me. I found out Snap-on Solas Pro scanners delay the r... Trouble codes: U1147 (SCP Data Fault Vehicle Security), U1043 (SCP Data Fault), U1027 (SCP Data Fault engine RPM), U1059 (SCP Data Fault Trans/AX/ PRND), U1051 (SCP Data Fault Brake System).
2003 Mercedes-Benz SL55 AMG Kompressor 5.5L abc system VIN: WDBSK74F33
Man what a pain this car was. It started with a leak and end up getting a computer. Well I tryed flushing the system and replaced the filter but that didnt change anything( dam that fluid is pricey)did the rodeo test 10 times a least so i figure air was not a...
2000 Mercury Mountaineer 4.0L rev/manual 1st VIN: 4M2ZU76E5Y
After reading thru the replies I realized what I should have from the get go, The line pressures were too low for the selected gears. Believing that the pressures were probably good before I worked on it, just a hung valve was affecting the upshift from 1-2 a...
2001 Mitsubishi Montero Sport XLS 3.0L Mechanical VIN: JA4MT31H61
Looks like this is fixed.We installed another used transmission and this time bypassed the cooler and installed after market stand alone cooler.The cooler in radiator must have been clogged when warm.We did flush cooler on every install and flow was good cold....
1979 Nissan 280ZX 2.8L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire, Poor Fuel Economy, runs very rich VIN: HGS1301079
Thanks for all the replies. Decided to put everything back together and start from scratch. Went through and changed spark plugs, cleaned grounds, cleaned temp sensor connector, and adjusted timing, idle speed, throttle switch, MAF, until vehicle started to ...
2001 Pontiac Grand Am SE 3.4L radio, inst cluster, exterior lamps VIN: 1G2NF52E41
found problem, previous repair was made at another shop hot wiring a feed from the power outlet to the resistor, once the blower motor was repaired properly it was backfeeding through the splice wire that went to the power outlet, found out it was repaired 4 y...
1998 Toyota Avalon XL 3.0L MIL Lamp on VIN: 4T1BF18B3W
thanks to all who replied. we got 2 new knock sensors and a harness from the dealer. drove it under the same conditions and no chk. eng lite. if i had to guess probably the harness. this morning i put the scope back on it to check and the d/c test showed t... Trouble codes: P0325 (Knock sensor bank 1).
2007 Volkswagen Jetta 2.5 2.5L Engine VIN: 3VWHF71K67
Cylinder leak-down test found exhaust valve(s) on #3 cylinder leaking air. Tried to de-carbon but no success. Owner did not want to pull head but rather trade it off. Can't say that I blame him. Thank you to all who gave thier opinions.
2004 Volvo S60 2.4 2.4L MIL Lamp on VIN: YV1RS61T84
Thank you to all who replied we fixed the car with a fuel pressure regulator, the pcm read 45 psi but actual pressure was 85 psi with new reg installed pressure was 55 psi and all is well Trouble codes: P0172.
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