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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 4, 2011
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for All Makes and Models
Help Request Answers
2004 BMW 525i 2.5L Cuts out VIN: WBANA53574
The customer states that this car is cutting out at idle and will restart, and while driving on the highway the rpms will drop and he said it feels like the brakes or something is holding it back. I can't fault it at this tme. Last week he brought it in with t...
1994 Chevrolet K2500 Silverado 5.7L Poor Idle Quality, Stall VIN: 2GCFK29K4R
Vehicle brought in with engine stall concern when coming to a stop. Was able to drive vehicle without getting it to act up. Checked some things out here and there but found nothing. When truck ws started to pull out of shop, it hesitated on start up for 3 seco...
2004 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHC23134
Hello group,have this 04 2500 chevy duramx diesel with code p0380 glow plug circuit,car runs fine after reset no light take a couple of starts and light will come back on,at this point,I have not done much tests on it,I started to ck for glow plug relay and co... Trouble codes: P0380
2007 Chevrolet Tahoe LT 5.3L Surge VIN: 1GNFK18730
seeks idle with no codes. fuel pressure is 60 psi. flashed pcm. relearned throttle. cleaned throttle body. has a new battery. alternator charges between 12.5 and 14.5 please i use your input.
2006 Chrysler 300 2.7L cranking VIN: 2C3KA43R16
Greetings Iatn techs. Got this Chrysler 300 that came in a couple months back for complaint that car would take longer than usual to crank. When brought in, after turning key on, if waited 2-3 seconds or so, car would crank. If you turn key right away, you wou...
1994 Dodge B250 5.2L no tcc engagement VIN: 2B6HB21Y3R
I am working on this van that came in for front brake repairs. While it was here customer complained of no tcc engagement. I checked for codes and found none. Looking at scanner to see if the tcc was being commanded I noticed crazy data info on the display e.g...
1996 Dodge Ram 2500 5.9L tach,ecm, cel,alternator, VIN: 1B7KC26C0T
Truck came in with dead batteries with complaint of no charging, no tach, no high gear and no check engine light. Charged batteries , truck runs now this is a diesel. Tried to hook modis up got no communication with pcm. After reading some posts on Iatn consen...
1997 Dodge Ram 2500 8.0L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: 3B7KF23W1V
Thanks in advance for any help. We had this truck towed into our shop, customer said it started chugging going down the road then died. He restarted it and it had reduced power and was hard to start, cranked fine, died and would not restart. When it arrived it...
2001 Dodge Stratus SE 2.7L No Crank VIN: 1B3EJ46U31
I have an 01 status that was towed in "no crank" The crank signal from the ignition switch goes to the starter relay and the transmission control module. Checked for crank signal at starter relay and trans control module and they are ok. I am not getting a gro...
2002 Dodge Ram 3500 Van 5.9L No Start VIN: 2B5WB35Z12
A year ago towed in no start no spark.found pcm was no good replaced.towed back in a year later no start no spark. I replaced pcm due to same problem no signal to coil. O.e.pcm is unavailable so sent out pcm to aftermarket rebuild co.plugged in and had spark f... Trouble codes: P0505 (Idle control system malfunction)
2004 Dodge Intrepid SE 2.7L Cooling Systems VIN: 2B3HD46R94
Please help the thermostat housing ((on lower side of engine)) keeps cracking during install. I am using the oem #4792328 and i cant check the block surface very well, but still have a hard time believing it could be warped enough in a inch and a half (between...
2007 Dodge Charger SXT 3.5L Loss of comm with TC VIN: 2B3KA43G77
Car came in for reflash from another shop for code P1004, reflash was going routine until unit tried to flash TCM then it kicked out. Their is now no communication with the TCM. Reattempt to flash continues to fail. Diagnosis of loss of communication pinpointe...
2007 Dodge Sprinter 2500 3.0L AC condensor fan VIN: WDOPE74577
Help Sprinter van techs, I have this vehicle that is driving me crazy. The AC condensor fan will not stop when the engine is turned off, I know that it is supposed to run a short time but it is not shutting down. I replaced the engine temp. sender and the rela...
1978 Fiat 124 Spider 1.8L No Start VIN: 124CS10101
Got it all put together and is just won't start. Spark is there but not quite sure how strong it is. The motor did sit for the last 6 months. I rebuilt the carb 2 years ago and the car did donuts in the parking lot last winter. I've capped the vacuum ports on ...
1989 Ford Ranger XLT 2.3L No Start VIN: 1FTCR10A5K
1 am about to let this truck go,most of the time does not starts,when does not start loses injection pulse,i have checked grounds, powers to the computer and i dont see a problem,check pip signal and it is fine, .5 to 10.5 volts square wave while cranking,it s...
2000 Ford E-150 Econoline 4.2L Hesitation, Cuts out, Stall, Poor Fuel Economy, Very little power VIN: 1FTRE1423Y
The vehicle originally came in running poorly and misfiring. We replaced the plugs, wires, and fuel filter. The misfire was fixed, however the vehicle still runs very poorly. At times (most often cold start) the vehicle will start and stall 2-3 times, then it ...
2004 Ford F-350 Super Duty XL 5.4L Misfire VIN: 1FDWF37J54
hi guys im stumped here this vehicle came in because the interior light would come on when you depressed the brake pedal. but it ran fine,i have removed the dash repaired all of the chewed wires and fixed the interior light problem.after i put the vehicle back...
1983 GMC Caballero Diablo 5.0L Wipers VIN: GTCW80HYDR
Hello GMC tech's , this one a old dog and has been frying wiper motors. If you turn the intermmitant all the way up the washer motor turns on? Our tech says that he ran the test on the switch per Alldata and it passed, but it sure seems like a switch when all ...
2003 Honda Odyssey LX 3.5L Poor Idle Quality, Misfire VIN: 5FNR186X3B
hello fellow techs. i have this van that came from auction with a broken timing belt and bent valves. pulled heads and sent to machine shop put back together and runs fine going down the road but at idle it has a misfire fuel trims climb to limit and set a p01...
1998 Isuzu wizard 3.0L No torque convertor lock up VIN: UES73FW-41
G,day all, we have an isuzu 4wd wizard also known as a trooper in our shop with an auto trans problem. We are unable to scan with our scan tool but got code 33, torque convertor solonoid fault? out manualy. While road testing torque convertor not locking up an...
2002 Jeep Grand Cherokee Laredo 4.7L cluster VIN: 1J4GW48N12
hello iatn techs,i need help im going crazy.this jeep came in with the cluster going crazy all the needles were going back and forth with key off and also the headlaights inop just low beam.i got a new ignition switch and tryed it thinking it was shorted no lu...
2006 Jeep Wrangler Unlimited Rubicon 4.0L hard 1-2 shift VIN: 1J4FA64S86
hello all i have this jeep rubicon/wrangler with dtc's p0218 and p0714 stored with the transmission shifting hard to second gear and erraticaly into all others. the trans temp on my scan tool shows 551 degrees celcius with koeo, and 184 degrees celcius koer. i...
2008 Jeep Commander Limited 5.7L MIL Lamp on, p013c VIN: IJ8HG58268
had p0430 code, installed latest flash and customer took vehicle. returned 100 miles later with a p013c code. i think this has to do with the downstream o2 sensor but am not sure. any help is greatly appreciated.
2003 Kia Sedona LX 3.5L airbags VIN: KNDUP13103
Hello everyone this kia came in with airbag light on scanned for codes retrieved b1511 driver belt switch open and b1513 pass seat belt switch open. Went to scan data using launch x431 when I went to pull up data the scanner said lost communication so I backed...
1993 Lexus GS300 3.0L Misfire VIN: JT8JS47E5P
car came in with a miss and we suspected a bad injector so we replaced all 6 with rebuilt units and also did a full tune up.(cap,rotor,plugs and wires) car ran great for a few months now its back with a miss on cyl number 6.we compression tested when we did th...
2000 Mazda Protege ES 1.8L Hesitation, Cuts out VIN: JM1BJ2233Y
thanks in advance fellow techs. this is my brothers car and I could use a little help. it hesitates and falls on its face after a hot soak. you attemp to take off and it just falls on its face and then takes off normal. it has set the p0420 code 3 times in the... Trouble codes: P0420
2000 Mazda Millenia Millennium Edition 2.3L Cuts out, MIL Lamp on, VIN: JM1TA2221Y
Customer come in for MIL and found 3 codes listed above. This customer came in 7 months ago with MIL and surging at cruise. We fix the vehicle and customer stated problem were fix until yesterday. This time MIL flashing and no misfire were felt during test dri... Trouble codes: P0303 (Cylinder 3 misfire), P0431 (Warm up cat eff. low bank 2), P1525 (ABV vent solenoid circuit open or short)
2003 Mazda Tribute LX 3.0L Stall VIN: 4F2YZ92B13
Fist time vehicle,came in on tow, cranks and stall.Check for DTC's none.check for TSB's,Check scan data. ECT=ambient,Map =0.02v, DPFE 1.04.IAT=16C.TPS=0.82v Check fuel pressure=60psi.Check fuel quality.no debris/water observed,lightup and burn=OK compared to o...
2005 Mercedes-Benz SL500 5.0L engine VIN: WDBFA67E0S
Hello Benz techs, this 05 SL 500 is very hard to start. It cranks and only cold sometimes it start and accelerate fine and idles okay. After couple of minutes will not take the gas and dies. Up on trying to restart it often back fires thru the intake and at ti...
2008 Mercedes-Benz C300 4Matic 3.0L ignition switch VIN: WDDGF81XX8
Car was towed in. When key is inserted and turned nothing happens. no warning lights or accessories work, steering does not unlock. The only response from the car is to tell you to remove the key when it is turned off. Based on a identifix hotline archive we r...
1999 Mercury Mystique GS 2.0L Hesitation, Cuts out, MIL Lamp on, Low power on accel VIN: 1MEFM6530X
A customer had brought in a 1999 Mercury Mystique GS. It has the VCT DOHC 2.0L engine. The car came to us with the CEL on and a poor idle from a dead miss and lack of power on accel. We first checked the plugs, wires and coil output. Coil was not firing above ... Trouble codes: P0340 (Camshaft position sensor A circuit Bank 1 or signal sensor - Circuit malfunction)
1999 Mercury Sable GS 3.0L Hesitation, Cuts out, Stall VIN: 1MEFM53S4X
customer came in and complained about a lose of power while driving at around highway speeds, however it is only an intermitten problem. i did basic checks and found everything ok. i went for a long ride, stopped at the gas station shut the car off and it woul...
2005 Mini Cooper 1.6L Shifter VIN: WMWRC33475
Hi this Mini probably has the Original Clutch? The Problem with it is it is extremely hard to move the shifter back & forth in Neutral. It will shift, go into all gears OK & car moves fine & can be driven but to simply sit at a standstill & try to shake the sh...
2002 Nissan Altima SE 3.5L unknown VIN: 1N4BL11E42
First thanks to everyone for your help. this 2002 altima came in with a howl in the rear while driving over 40 mph (wheel bearing was spent) and had a terrible shake in steering wheel above 40 mph (rotors out of round) during preliminary inspections before rip...
2003 Nissan Maxima GLE 3.5L MIL Lamp on VIN: JN1DA31D63
Hi nissan techs i have this 2003 nissan maxima that came in to the shop with a burnt ecm, I checked if the iac motor is shorted, but this car has the electronic throttle. Could the electronic throttle be shorted or is something else causing the ecm to burn? Th...
2005 Nissan Altima S 2.5L MIL Lamp on VIN: 1N4AL11E85
I hope someone can confirm what I believe is a jumped or stretched timing chain. This car sets P0011 whithin a couple miles. Vehicle originaly came in for an obd2 plug in emissions test and had a code P0011. It was past due on the oil change and low. We did an... Trouble codes: P0011
2005 Nissan Murano SE 3.5L unknown VIN: JN8AZ08T55
need help with folks that have chased a whistle rattle noise, makes noise with belts off, suspect exhaust, brackets, flywheel area ?
2006 Nissan Pathfinder SE 4.0L slip lamp VIN: 5N1A518U66
Ok. The first tim this pathfinder came to us it had two codes, c1116 stop lamp circuit failure and c1142 abs pressure sensor circuit fault. We replace both parts and the codes never returned. At the same time we replaced a fuel level sender for inop fuel gauge...
1999 Porsche Boxster 2.5L No Start VIN: WP0CA2984X
Hello everyone. I have a 1999 Boxster with an unusual problem. vehicle was towed in, no crank no run. When vehicle arrived at my shop, the battery was dead, charged battery, got the front and rear boots opened, still no crank, no start. Scanned for codes in th... Trouble codes: 25 (tERMINAL 86 S not detected), 49 (K lead), 21 (W lead DME immobilizer), 1571 (Immobilizer)
2001 Saab 9-5 SE 3.0L Engine VIN: YS3EF48Z41
Engine smokes while running. The turbocharger was replaced a couple of months ago because of smoke on start-up when cold. Since then the engine has developed a smoking problem at idle. It was first noticed when coming to a stop, but has sinced developed into a...
2002 Saab 9-5 Arc 3.0L oil flow VIN: YS3ED592Z8
Did oil change with cylinder head job as usual, and the oil gooped out in blobs. Oil light is coming on at idle in gear, and the lifters are VERY slow to pump up. I'm already sure the pick-up screen is clogged, but I want to test for sure. I need the oil pre...
2006 Saturn Vue 2.2L Brakes VIN: 5GZCZ33D86
Car came in with lt. frt brake caliper smoking hot, literally. Checked with infra-red thermo & the temp was 450 deg.F and the other side was 180 degF. Replaced both front calipers and hoses. Power vacuum bled and added new fluid. Bled rear brakes as well. Stil...
2003 Suzuki Aerio S 2.0L Hesitation, Stall, Misfire VIN: JS2RA41S73
This car has had new coils maf and cam sensor. Installed by customer. We have installed used ecm with the exact same failure. When it does fail only #3 cylinder is misfiring. The ecm is triggering coil too long. moniter cam sensors and crank sensor all ok. Hav...
2005 Volvo XC90 2.5T 2.5L abs VIN: YV1CZ59275
Came in with ABS lamp on intermittently. BCM-0070 Pump motor supply voltage BCM-0072 Pump motor mechanical error CEM-1A5F communication with BCM missing. Checked pump motor with power and ground with jumper wires directly to motor and runs. Will not activate ...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2001 BMW 740i 4.4L dead battery VIN: WBAGG83491
Only 30mA drain was detected(16 minutes after engine shut down). I had performed that measurement at least 10 times with consistent result. In fact, the engine cranks easily with no signs of battery weakness after parking for 5 days. However, there was one tim...
2007 BMW 328xi 3.0L Tpms VIN: WBAWC33517
Well, we went as far as we could with this, as our diagnostic equipment is somewhat limited, and the information I received was also limited. This car uses the wheel speed sensors to determine relative rolling speeds of each wheel, so there are no batteries t...
2000 Cadillac Escalade 5.7L Duct Temp VIN: 1GYEK13R4Y
2001 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Cuts out, Misfire
A big "thankyou" to all that responded to my help request. The vehicle in question was repaired by responding to the suggestions from Jacob [...]., which both reminded me to cover all the "basic tune-up" stuff first. Also mentioned by Tim [...]. and Ken...
2005 Chevrolet Cavalier 2.2L Cuts out, VIN: 1G1JC52F95
We were leaning towards 4 injectors and cleaning the tank bc it ran good as long as you sprayed it w/ carb cleaner. Customer didnt was to spend more time on it.
2007 Chevrolet Express 3500 6.0L Misfire VIN: 1GAHG39U97
Thanks to every one that replied back to us,i have found and fixed the problem. after pulling off the dog house i seen how the wire harness is tucket under the fuel rail so i started pulling it out from under the rail and once i had it out i seen that the com.... Trouble codes: P0354 (Ignition Coil D Primary/Secondary Circuit Malfunction).
2006 Chrysler Pacifica 3.5L MIL Lamp on VIN: 2A4GM68466
Ok, so thanks to all explaining how to diagnose this valve. I had another tech smoke the system and he found smoke coming from off the top of the tank. he lowered it and found the nipple on the tranfer pump broken. apparently these have evap hose shrinking ... Trouble codes: P0456.
2008 Chrysler Town & Country Touring 3.8L gauges VIN: 2A8HR54P58
I performed the checks on the ignition switch that several of you suggested and the concern occured (was very hard to duplicate).After checking the wiring behind the switch, I replaced the switch. Problem solved. Thanks guys!
1951 Dodge Power Wagon 3.8L Oil Pump-Distributor VIN: 1HD623H8U7
Thanks for the several replies reassuring me that both the oil pump and distributor drive mating surfaces need to (BOTH) be offset in order to mate correctly! After further research we found that we had installed an oil pump designed for a (12 Volt) system. Wh...
2001 Dodge Dakota Sport 3.9L Engine VIN: 1B7HG2AX31
I would like to Thank Everyone for all the reply's. I had watched the O2S's on the scan tool before and none of the voltages seemed to read out of specs so I looked strait past them. Also while I had the heads pulled off the truck I had looked down into the ...
2005 Dodge Caravan SE 2.4L Interior Lamps, Radio, Doorlocks VIN: 1D4GP25R05
well thanks to you guys this ones fixed, ryan and dave said to change the IOD fuse, I had already checked all fuses and they were all good, power to them all right?, well at their request I thought what the hell...change it anyway, and when I pulling it out on...
1998 Ford Windstar 3.8L rack & pinion VIN: 2FMZA5146W
most of my replies indicated that reman parts are junk. I contacted tech support for both Cardone and Fenco, the 2 different brands I used and neither one seemed to have a clue. The lack of knowledge and available information has been unbelievable. Fortunately...
2004 Ford Freestar SE 3.9L Cuts out, Stall VIN: 2FMZA52274
Unable to duplicate no matter what I try. if I get it fixed will repost
2005 Ford Taurus SE 3.0L long cranks VIN: 1FAFP53U05
thanks for all the replies replaced iac with one from ford its been a few days customer came back this mornning and paid the bill he says car starts fine even after 48 hour soak thanks again
1997 Geo Prizm 1.6L No Start VIN: 12JW833EUE
ok sorry took so long to close this. after checking everything under the sun my diagnosis concluded ecm is bad, but with limited rescources to be sure my friend took the car to the dealer to verify diagnosis dealer agreed that ecm was bad, tried 4 junkyard ecm...
2001 GMC Yukon XL 1500 SLE 5.3L Surge, MIL Lamp on, Low power VIN: 3GKFK16T61
Well, this one can be recorded as a partial fix. There was more than one problem on this vehicle. A fuel pump fixed the drivability, but the CEL still comes on. Some details. We checked fuel pressure when the vehicle was acting up and it did not drop off. ... Trouble codes: P0153 (O2 sensor circuit slow response B2 S1), P0155, P0131 (O2 sensor low voltage B1 S1), P0151 (O2 sensor low voltage B2 S1), P1153 (O2 Sensor insufficient switching B2 S1).
2006 Honda Odyssey EX 3.5L Hesitation, Misfire, MIL Lamp on VIN: 5FNRL3864B
Fixed it. Turns out that if this vehicle even has one cylinder mis firing and hardly noticeable at that, the ecm will shut down the entire bank by means of fuel pulse- this is normal and I never knew this ecm wiil due this. Cylinder 5 was slightly mis-firing ...
2003 Hummer H2 6.0L Chain & Sprockets VIN: 5GRGN23U63
Well as fate would have it, the problem was not in the transfer case. On a test drive over a small bridge, where I could really hear the rattle, I dropped the H2 into low range at 20mph and the rattle stopped. I did this 15 more times to verify and everytime...
2002 Hyundai XG350 3.5L Mechanical VIN: KMHFU45E12
Thank-You for the responses. Yes there is a small round hole in top center of lower timing belt cover where the wiring for crank sensor comes out. The wiring has two clips on harness one that bolts to rear upper cover lower bolt on the outside and also a plast...
1995 Lexus LS400 4.0L Instrument cluster VIN: JT8UF22E7S
Two replies suggested possibly faulty ignition switch. After unplugging instrument cluster and all sorts of other components, I finally got to the ignition switch and unplugged it. Now everything was powered down and when I reconnected it, all accessories star...
2004 Lincoln LS 3.0L Hesitation, Cuts out, Lacks power throttle VIN: 1LNHM86S14
Well I had already fixed this problem before I started this post but did not know it. After installing the throttle body, we only tried to rev engine up in the shop in Park and was scared to drive down the road. Just for grins & giggles, I pulled it out in the... Trouble codes: P0122 (Throttle/ Pedal position sensor A circuit low input), P0223 (Throttle/ Pedal position sensor B circuit high input), P2110 (Throttle Actuator control system forced limited RPM).
2006 Lincoln LS Sport 3.9L Power Windows VIN: 1LNFM87A26
Thanks to Robert, Shawn [...] Douglas for there replies. Shawn and Douglas sent us on the right track & Douglas with much detail. Mitchell doesnot mention removing power first prior to set procedures. Thanks again.
1997 Mercedes-Benz E320 3.2L Cuts out VIN: WDBJF82H1V
Finally!!! Found low crankshaft amplitude. I pulled the starter to look at the teeth on the flywheel . I noticed the gap from sensor to flywheel to be a bit excessive. I removed the sensor again to inspect it. I found no sign of rust or corrosion. The sensor...
2008 Mercedes-Benz E350 4Matic 3.5L controller VIN: WDBUF87X48
thanks for all the replies, we sent the car to the dealer for a reprogram and the a/c came back to life. thanks again.
1992 Nissan Sentra E 1.6L No Start, Stall VIN: 1N4EB32A5N
Well we pulled fuel rail off intake and cycled key. Found two leaking injectors on this one. Check CTS and it had lots of corrossion on it. Customer doesnt have money to replace at this time. But pretty sure the leaking injectors were the cause of engine stall...
2003 Nissan 350Z 3.5L Horn VIN: JN1AZ34E93
Thanx for the help on this one We actually took the air bag off and found the horn pad piece under it was bent. Why ? not sure bent it back and now it works, My guess is some one hit the horn too hard and bent it 16 year old driver ??? HMM let pound on t...
2008 Nissan Altima S 2.5L master cylinder VIN: 1N4AL21E38
Well she is done, I found two different problems .After replacing the master with the correct one ( parts boo boo ) and bench bleeding. Also we used the push back bleeding style of bleeding all is good Thanks IATN Cant be in business with out you. Mark
2004 Subaru Impreza WRX STI 2.5L MIL Lamp on VIN: JF1GD29634
Thank's to everybody, we had to replace the computer, I checked all input, every input was ok. The check engine light was still flashing. the swap was complete. Replace the computer, everything is fine
2004 Subaru Impreza WRX STI 2.5L No Start VIN: JF1GD70604
Thanks to everybody that took time to try to help me most of them were very close to the problem,the tone ring for the crank sensor was out of time so i took the timing belt off and retime all the pulleys and the engine started and run without a problem thanyo...
2003 Toyota Sienna LE 3.0L smokes on startup VIN: 4T3ZF19CX3
First thanks to all for your input. The two most common suggestions were plugged valve cover, the rear one with the pcv, and stuck oil rings on the pistons. I decided to pull the pcv out of the rear cover and connect it to a new pcv hanging outside the engine....
2006 Toyota Sienna Limited 3.3L MIL Lamp on VIN: 5TDBA22C26
Replaced catalytic converter and all is well. Sorry thought I'd closed this sooner.Thanks! Trouble codes: P0420, P0430.
2004 Volkswagen Jetta TDI 1.9L MIL Lamp on, Whistle VIN: 3VWRR69M64
All better now! Thanks to Victor and David especially right on with their analysis of the "whistle" coming from the exhaust. I forgot to tighten the very topmost nut on the stud holding down the tube going from the exhaust to intake manifold (EGR feed) the cod... Trouble codes: 18996 (P2564 Turbo boost position sensor out of range).
2004 Volkswagen Beetle GLS 1.9L serp belt VIN: 3VWCR31C34
A belt tensioner solved the problem. We compared the old pulley to the new and noticed the bearings were rough. The new alternator pulley was made by LUK and actually did improve the problem slightly but the silver bullet was the belt tensioner. The belt tensi...
2005 Volkswagen Jetta 2.5 2.5L Poor Idle Quality VIN: 3VWPF71K75
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