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Prev Professional Automotive Repair Technical Discussions for October 4, 2004
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1982 BMW 733i 3.2L central locking system VIN: 77397237R3
1996 BMW 750iL 5.4L MIL Lamp on VIN: WBAGK232TD
This Bavarian beast has a reoccurring check engine light which is triggered by a "bad ECU" according to the AST Retriever. This code has been cleared several times. The cost of the ECU has me hesitating to replace it as the vehicle runs fine. No loss of power ...
1997 BMW 328i 2.8L MIL Lamp on VIN: WBABK7329V
Lack of info here... we have the Snap-On red brick w/BMW cartridge. What are the common problems here and/or what tests can we do? We included both OBDII and BMW code numbers. What is the P1250 code? Trouble codes: P0441 (Evap emission control system purge flow fault), P0455 (Evap emission control system leak), P1250 (manufacturer specific code), 254 (Tank leak detect major leak), 252 (Tank venting/extraction faulty)
2000 BMW 528i 2.8L Trans light on VIN: WBADM6348Y
This flood car has the trans light on with a code 19 that returns as soon as its cleared. I am afraid to drive it until I can check it out. Bentley lists the code as a shiflock solenoid problem, with code 19 covering the following; p1761 shiftlock solenoid p...
2001 BMW X5 4.4i 4.4L Climate Fan front VIN: WBAFB33571
I check for the voltage and its all time with bat voltage some can send me the relay location and wiring diagrams thanks to reply
1988 Buick Reatta 3.8L Hesitation, Cuts out VIN: G4EC11C6J8
Have a stalling problem only when cold and only on start up. If I keep my RPM up at start up it will sometimes backfire and stall.It will start up again and hesitate for about 30 seconds and the be OK until it gets cold again. Don't get much time to diagnose b...
1995 Buick Regal Custom 3.1L rear pads VIN: 2G4WB52L2S
Hello to all and thanks in advance. This car was brought to me with the complaint of brakes grinding inrear we replaced 1 rear rotor and new pads. (we were told to do this job as inexpensive as possible). Two weeks later car is back with grinding noise in rear...
1986 Cadillac Fleetwood Brougham 5.0L a/c compressor VIN: 1G6DW69Y2G
looses ground from ecm to a/c cut out relay which gives power to a/c comp clutch, only when accelerating, it will come back on after a while, when the car idles has no problems.
1994 Cadillac DeVille Concours 4.6L Poor Idle Quality, Cuts out, Stall VIN: 1G6KF52YHR
when eng is hot,with ac on,engine stalls.seems to be ign.related.computer grounds seem ok.installed new cam sensor.no change.had bad alt. installed new alt.,seemed better but problem still there.iac motor tries to keep eng from stalling but eng still stalls. a... Trouble codes: 41 (no cam ref signal), 47 (bcm to pcm serial data problem), 52 (def pcm ecu ram chip error), 95 (eng stalled), 109 (int. ecm problem), 107 (bcm to pcm serial data problem)
1991 Chevrolet S10 4.3L Poor Idle Quality VIN: 1GUKCT18ZM
Hello This S-10 has an extremely rough idle on cold start, once it warms up it is fine all day, even after several hours of cooling down. The throttle plate was stopped up, so all that was cleaned out and a new PCV was installed. The problem was still there s...
1991 Chevrolet C1500 Cheyenne 5.7L AC vent doors VIN: 2GCEC19K4M
This truck has clicking sound at the rec. vent door, but the door does close and open, maybe the module is not working right and i do not have any ac air coming from the ac vents , it comes from the defrost or the floor and is not very strong air flow. Do i ne...
1996 Chevrolet Blazer 4.3L lacks power VIN: 1GNDT13W2T
It idles good but has no power when you try to drive it.It acts like the timing is late.When i installed the trans there was a noise coming from the front of the motor like a rattling .Noise was present with t-converter unbolted.this was with about 15,000 afte...
1997 Chevrolet C3500 Cheyenne 7.4L ignition VIN: 1GCHC33JXV
this truck will run great for an undetermind amount of time then starts cutting out runs like a dog, then runs normal, starts its thing again and blows the ecm 1 fuse, no codes, nothing, we changed the fuel pump because it was real noise and pressure was aroun...
1999 Chevrolet Monte Carlo LS 3.1L Cuts out VIN: 2G1WW12M9X
You can drive the car about 15 to 20 miles it starts to buck and die. No engine light. Fuel pressure is 35 to 42 which is okay. Trouble codes: N0NE
2001 Chevrolet Silverado 2500 HD 6.6L Surge VIN: 1GCHK29161
This truck has a light surge of about 100 or 200 RPM's at idle. No codes. does not happen when driving down the road. Power is good. No shifting problems or any other indication any thing is wrong. Starts good at all times. I've looked at the scan data and don...
2001 Chevrolet Suburban 1500 5.3L abs pump runs VIN: 3GNEC16T62
the abs pump motor runs non-stop. truck came in with the 60 amp relay pulled. the motor will also run even with the wiring harness to the ebcm disconnected(this is the one less the two power/ground leads to pump) mod not real clear on the control, but it looks...
1995 Dodge Viper 8.0L No Start, Cuts out, Stall, Misfire
hello fellow techs, we have a wonderful dodge viper that seems to like us more than we do it. the car came in to us with some over heating issues that we repaired. we also performed some maint. items that the customer req. after all was done the car ran great ...
1996 Dodge Intrepid ES 3.5L Poor Idle Quality, Hesitation, Surge VIN: 2B3HD56FXT
hey dodge techs i performed a head gasket replacement on this 3.5 liter a week ago and now it comes back with a rough idle surge condition. checked spark plugs and found them to be very clean and lean burning. believe this to be a lean fuel condition but dont ...
1998 Dodge Stratus ES 2.5L Hesitation, Cuts out, Stall VIN: 1BEJ56H6WN
1999 Dodge Intrepid 2.7L Mechanical VIN: 2B3HD46RXX
I have this customer that wants me to swap in a 3.2 where this 2.7 has been. He found someone on ebay that was selling the information on how to do this and bought the info. gave it to me and asked me to read it over and tell him what I thought. I read it over...
2000 Dodge Neon High Line 2.0L shift interlock VIN: 1P3ES46C3Y
I am trying to get more information regarding the shift interlock system on this Neon. the problem is then the shift interlock cable is installed below the ignition switch the key can not be removed untill the interlock cable is removed again from the lock h...
1988 Ford E-350 Econoline Custom 7.5L temperatrure gauge too high reading VIN: 1FDKE30G8J
the customer claims that his gauge never had read this high before. now reads at the l in normal on the ford gauge. we have tested the rad with infared heat gun and found max temp of 195 degrees. contacted the ford dealer they say that the sender they sold us ...
1994 Ford Ranger XL 2.3L check engine light VIN: 1FTCR1OA1R
Hello everyone this ranger came in and ran bad. I tuned engine and runs good know. When it came in the check engine light was on and had code224. After tune up I cleared code and it will come back in about 30 seconds. What is this code and how to diagnose this... Trouble codes: 224 (EI circuit 123)
1996 Ford Taurus GL 3.0L MIL Lamp on VIN: 1FALP52U0T
Im having a problem with this taurus...intially came in for egr flow problem and knock sensor codes.we cleaned egr ports behind throttle body.Egr code is gone.I checked a few posts here suggested no egr may trip knock sensor code as well from being lean.Knock ...
1997 Ford Taurus GL 3.0L heater VIN: 1FALP52U1V
no heat inside vehicle,cooling system flushed,heater core back flushed,waterpump replaced
1997 Ford F-150 Lariat 4.6L engine VIN: 1FTDX1862V
Hello folks, This miserable truck had dirty coolant & a very intermittent overheating problem. Now after a complete flush of all components, replacing new coolant, thermostat, & a brand new "two row" heavy duty radiator, the temperature guage is rock steady f...
1997 Geo Metro 1.0L MIL Lamp on VIN: 2C1MR2269V
Checked for codes found O2 sensor code for rear sensor. Replaced sensor as I could never get anything out of it. All other inputs/grounds were ok at that time. Had to wait a couple of days for new sensor, customer took vehicle and brought back when sensor was ... Trouble codes: P0136 (O2 Sensor Fault Bank 1 Sensor 2)
1995 GMC K2500 Suburban 6.5L speedometer and tach VIN: 1GKGK26F2S
asking for help.this viechel has a problem with the speedometer and tach jumping up and down together.ive scoped the speedometer signal to the buffer all looked well while it was jumping.weve tried 3dash units. ive checked alt out put.battery connections.power...
1999 GMC Jimmy SL 4.3L 4 wheel drive VIN: 1GKDT13W4X
I cannot figure out why my 4 wheel drive will not engage... i have test my front diff actuator and it is good, and so is the cable... but when I had it apart i noticed i had some resistance in the front diff.. from disengaged to engaged.. I applied vacuum to t...
2000 GMC Sonoma SL 4.3L brake booster VIN: 1GTDT19W5Y
Original complaint was a low pedal so I presumed a bad master and pedal is the same. The pedal stops the vehicle OK and seemingly at the correct height. The problem is that the pedal goes low if you hold it down firmly. Other opinions are that it is normal, bu...
1997 Honda Civic EX 1.6L speedo VIN: 1HGEJ8240V
Hello Honda techs. I have a honda that was brought in to limit high speed. The child has been caught twice driving at 120. I know we need to limit rpm only when in 4th gear. I have talked to msd and a few other aftermarket people with no help. I thought we cou...
1999 Honda CR-V EX 2.0L Reverse gear VIN: JHLGH2350X
Vehicle presented with hard to engage reverse, even harder to disengage. I have tested vehicle and found clutch to to be good with clean disengage and good pedal. All forward gears engage smooth and easy. Only problem is reverse. Does not matter if engine is r...
1999 Hyundai Elantra GL 2.0L MIL Lamp on VIN: KMHJF25F1X
dear tecsĦĦ my scanner it`s not able to give me troubleshooter for this code,i don`t realy know what is about.teh car runs good but the light on. what can i do? Trouble codes: P1127 (fuel trim rich under load)
1999 Jeep Grand Cherokee Laredo 4.0L Code P1764 VIN: 1J4GW58S5X
This Jeep is setting a code P1764, Governor pressure low. We have replaced the governor solenoid and pressure sensor. Initial inspection showed a code P1762, Governer sensor low, but this code was fixed with the parts replaced. Now when we look at the data, de...
1999 Lexus GS300 3.0L engine oiling VIN: JT8BD68S1X
thanks in advance...about 5000 miles ago above vehicle had to have head removed to facilitate repair of hole caused by oil gun being left in engine and getting wedged between camshaft lobe cam cover and head...replaced cam cover (intake side) and installed rep...
1995 Mazda Miata 1.8L No Start VIN: JM1NA3530S
help!!! - have this miata that will start and run for about [...] - will lose injector pulse - no signal out of computer - before would not start at all - no signal from crank/cam sensor - replaced sensor and main relay will start and die - have power to co... Trouble codes: 01 (no distributer ref signal), 04 (no cam signal)
1999 Mazda Miata 10th Anniversary 1.8L Misfire, MIL Lamp on VIN: JM1NB3531X
car may set a po123 for the tps, have scoped the tps and maf and appear to be ok, voltage at idle is .55 and wot. is 3.76v. not able to see snapshot voltage on code on my scanner, voltage drop on the ground side of the sensor is .23 mv. drove the car with scop... Trouble codes: P0123
2000 Mazda MPV DX 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: JM3LW28G9Y
This vehicle turns on check engine light intermittently under several different conditions (always throws number four cylinder misfire code) no coolant loss and vehicle runs smooth most of the time. Usually turns on light when stopped at a signal, sense brief ... Trouble codes: P, 0304 (Number four cylinder misfire)
1992 Mercedes-Benz 600SEL 6.0L Surge, Cuts out, MIL Lamp on VIN: WDBGA57E3N
Hello Mercedes techs., We have this car in from a good customer, summers only, has always kept car in good condition. Has Mercedes dealer in florida service vehicle during winter months. It surges and cuts out above 3/4 throttle, fuel pressure 60 - 65 at idle...
1999 Mercedes-Benz C280 2.8L MIL Lamp on VIN: WDBHA28E3S
these are reocurring codes in the hfm module and the dm module we have checked several different times repaired all vacuum leaks and replace the mass air flow meter. car runs very well but we can clear these codes and before the day is up just cruiseing down r... Trouble codes: 48 (MB code 052 Mixture too lean lower part load in hfm module), 31 (Dm module injeactor long term adaptation to limit value)
1999 Nissan Quest GXE 3.3L rotors VIN: 4N2XN113TX
We are having problems with repeated rotor warpage on this customer's vehicle. Initially we performed a front brake job, pads and machine rotors, and rear brake adjustment at milage [...]. The car came back two weeks later with a noise issue, so the pads ...
1999 Oldsmobile Alero GL 2.4L front end right side VIN: 1G3NL52T9X
when turning wheel hard for parking lot maneuvers you get a thump thump in forward and reverse. when it does thump thump in forward it will not do it again til you put in reverse and move then it will thump thump again until put into drive again and move forwa...
1999 Oldsmobile Intrigue GX 3.5L Excessive Emissions, Stall, Misfire, MIL Lamp on VIN: 1G3WH52H7X
this car will start up runs very poor over fueling injector on time 40-90ms have to keep foot on acc to keep runing mil is flashing at times it will clear up after 15-30 sec of runing and run fine but most of the time it comtinues to run poor when it does clea...
1984 Pontiac Fiero SE 2.5L Clutch VIN: 1G2AF37RXE
I have the above Fiero that will not allow the clutch to disengage fully. I can get it into gear while on a lift, but once on the ground, forget about it. History: Car was driven in by customer for a clutch and sat outside for about a month before work starte...
1996 Pontiac Sunfire SE 2.2L Starting VIN: 1G2JB1240T
This sunfire will stall driving or sitting in bay after 10 minutes,after stalling will not restart right away,no spark no injector pulse,no check engine light,codes 21,22,23 ipc dtc.Check ecm for codes none.All connections at ecm are good.Is there any way to p...
1998 Pontiac Grand Prix GT 3.8L Hesitation, MIL Lamp on, OVERCHARGING VIN: 1G2WP52K1W
thanks in advance, this 1998 gt is overcharging 17 volts, abs and traction light come on, at time air bag lamp blinks. vehicle can be started, let idle, all is well, drop into gear power brake, all is well, after putting in gear and attempting to drive, vehicl... Trouble codes: P0560
1998 Pontiac Trans Sport Montana 3.4L ABS Module VIN: 1GMDU03E5W
This vehicle has been to several other shops,It's problem is Intermittent and has not acted up for anybody long enough to diagnosis.The customer states that while driving the ABS,TCS and brake light will come on and may or may not quit running (as he's driving...
1996 Saab 900 SE 2.5L MIL Lamp on VIN: YS3DF78V9T
Need help with this car. Keeps setting O2 sensor codes. If the codes are cleared they will return after driving the car. Don't have a SAAB scan tool so can only look at OBD II data. The data shows 0 volts for all the O2 sensors and does not change. LOOP status... Trouble codes: P0161 (O2 heater circuit B2S2), P0131 (O2 circuit low voltage B1S1), P0157 (O2 Circuit low voltage B2S2), P0137 (O2 circuit low voltage B2S1), P0151 (O2 circuit low voltage B2S2)
1997 Toyota Camry CE 3.0L Tcc code0773 VIN: 4T1BF22K2V
Toyota techs we have a Camry that has code po773 shift solenoid E which our info says is the tcc solenoid. We have checked the resistiance at first it was 25ohms spec we found says 11-15ohms we checked and tightened the conections and retested 12 ohms cold and...
2001 Toyota Avalon XL 3.0L Temp. Control VIN: 4T13F28B81
Hello Toyota A/C Heat Gurus, This vehicle(MCX20L-AEPGKA, Avalon XLS)was purchased new by present owner, no problems origionally, well maintained...Now the electronic temp. control seems to be acting up. Owner tells me that digital temp. buttons must be lowere...
1999 Volvo V70 2.4L Excessive Emissions, MIL Lamp on VIN: YV1L256D0X
This car runs run excessively rich, light black smoke from exhaust at idle, large puffs of black smoke on snap accel. Only one fault code, P1132, has been set. Intake system was smoke tested for leakage, none found. Adaptives have been reset. Dealer has recen... Trouble codes: P1132 (Adaptive Out of Range)
2000 Volvo V70 2.4L MIL Lamp on, Yellow Arrow Flash VIN: YV1GA8740L
Wow, two in one day. This is a new one for us, old client, but new problem. This car was towed into our workshop over the weekend. Apparently the headlights were left on the battery went dead. The car was then jumpstarted. After jumpstarting the Check Engine... Trouble codes: P0605 (Internal Control Module Read Only Memory ROM Error), P1618 (SBDS Interactive Codes)

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1993 Acura Integra LS 1.8L MIL Lamp on VIN: JH4DA9355P
this one was a maJOR headscratcher!!! it turned to have two wires n shorted together in the loom for the iac. i ended up running allnew wiring and leaving the bad wiring alone in the loom, thanks for the replies Trouble codes: 14 (idle air control problem).
1998 Audi A4 2.8L MIL Lamp on VIN: WAUFD68D6W
Thank to those who responded. The correction was to replace the ECU. We obtained a unit from a salvage car and recoded the module. Afterward, the code P1433 cleared and we could activate the air pump from the AST Retriever. All the readiness codes were able to... Trouble codes: P1433 (Secondary air injection relay/open circuit.).
2001 Audi A6 Quattro 2.8L door locks VIN: WAUED64B61
A big Mid-West thank you to everyone who responded. Pulled the old door actuator apart, only has one motor. After replacing the module and recoding the key, all key functions worked correctly. Special thanks to Ron from Kentucky.
2000 BMW X5 4.4i 4.4L code set VIN: WBAFB334IY
Thank to those who responded. With your help I fixed this problem, which was a camshaft position sensor. Sensor on the driver side was bad, was replaced and code was clear from memory. After week of driving, code don't come back. One more time, thanks to all w... Trouble codes: 1174 (cam position sensor).
2000 BMW 528i 2.8L Hesitation, Cuts out, Misfire VIN: WBADP6348Y
WOW , What a response,It turned out to be a bad Exaust side camshaft position sensor. You guys nailed it I hope this one gets to the archives. I didnt have alot of BMW service info now its fixed , thank you very much Jimmy [...] Trouble codes: 1397 (undocumented code).
1994 Buick LeSabre Custom 3.8L Poor Idle Quality, Cuts out, Stall VIN: 1G4HP52L8R
Thank you to all that replied to my help request, I have personally sent each a thank you, but if I missed anyone, Thanks again. Well after doing voltage drop tests on all grounds, I went to the PCM. I ran redundant grounds to the PCM just to be sure, and this...
1996 Cadillac DeVille 4.6L No Start VIN: 1G6KD52Y4T
Well here it is. The vehicle has been gone for a week now and the no start problem seems to be alleviated. but more importantly the oil pressure problem is gone. as some suggested we filled the crankcase with 12 quarts of oil and ran the engine unitl we got oi...
1955 Chevrolet 210 265CID old
Recieved many good spec's, needed the measurements for frame points as car had been wrecked at some time and wanted to make sure frame was sqaure before setting up front end. Must be a lot of guys who still tinker with these old classics as almost everyone had...
1992 Chevrolet Camaro RS 5.0L Poor Idle Quality, Hesitation, Stall, Misfire VIN: 1G1FP23EON
well guys this one got me.i think the problem will be a internal vaccum leak somewhere,or coolant leak perhaps headgaskets???.i do not have gas bench to confirm.the customer has had car a another shop for a week trying to repair,they did not repair anything,ju...
1994 Chevrolet Camaro Z28 5.7L Hesitation, bog VIN: 2G1FP32P8R
We received very good suggestions for this vehicle 2 replied that they had to replace 3 ecms to get a good one for the same symptom others suggested the optispark units were a common problem the owner thought another shop had changed the unit because of the co...
1997 Chevrolet S10 4.3L Unknown VIN: IGNDT13WIV
She brought this Blazer in this morning. Heater core started leaking over the weekend. Replaced it - what a job - and all is well. Thanks for all the responses. Dan
1999 Chevrolet Silverado 1500 5.3L Cooling Systems VIN: 2GCEK19T4X
i am sorry this took so long to post but, i injured my back and have not yet had a chance to repair this truck. i received alot of info on the intake manifold gaskets and i believe that is where i'll head to. that is the only thing that makes sense to me. the ...
1997 Dodge Neon 2.0L Surge VIN: 1P3ES27COV
thank's to all who replyed to the post seem's that when i could get the idle to go high i disconected the new diode harness that came with the recall to the cooling fan motor. previous i disconnected the harness, the idle was still high . i disconnected the ha...
1995 Ford E-350 Econoline XL 5.8L Poor Idle Quality, Stall VIN: 1FBJS31H8S
Bad wire in tps circuit. Caused problem(voltage jumped around when harness shook. Thanks for all your help. ED Trouble codes: 122 (tps less than minimum voltage).
1992 Honda Accord LX 2.2L No Start VIN: 1HGCB7651N
Thanks to all who help me and the info on the honda PGM FI system, the problem was the main relay which most everyone said, i did'nt know the relay was dual purpose. I just replace it and waited a week, customer said no more problems starting.
1995 Land Rover Range Rover County Classic 3.9L MIL Lamp on VIN: SALPV1243S
Thanks to Wayne, Edwin, Jim, and Jason. As many of you mentioned the ECM code P1775/P1175 meant that the transmission ecu had a fault code stored. Why the check gear box message didn't come up on the vehicles display I don't know. Using the AST retreiver I was... Trouble codes: P1175.
1995 Land Rover Discovery 3.9L Rear Wiper VIN: SALJY1246S
There is confusion over what side the relays may be on but consensus that they are inside and not under the hood as Mitchell says. The customer took the car, as the rear wiper was not a big deal at this time and I'll take another look at it next time it's in...
1993 Mazda 626 DX 2.0L No Start VIN: 1YVGF22A7P
Thanks everyone for the help! Put a distributor in and all is well. I already put this in once, but I guess it didn't go through. Thanks again.
1995 Mitsubishi Eclipse RS 2.0L inj.#3&4 on constant VIN: 4A3AK34YAV
Everything that was suggested had being double checked. Tried to installed timing belt cam 180 degree off on the compression stroke cyl.#1 tdc. Inspect continuity on circuits all ok., ran new wiring to injectors -same no fix results. electrical circuits not gr...
1997 Mitsubishi Diamante ES 3.5L battery drain VIN: 6MMAP37P3V
this was a nightmare we finally were able to figure the problem had to be in the aftermarket alarm system. the alarm was tapped into just about every module, fuse relay center etc. we decided it was not our place to remove the alarm system so we sent the custo...
1996 Nissan Quest XE 3.0L MIL Lamp on VIN: 4N2DN118VD
thanks to everyone who tried to assit, but for those who pointed out that the o2 sensor wire might have been broken near the front engine mount were correct. Thanks for the assit guys you all are the beat. Trouble codes: P0135 (O2 sensor heater circuit malfunction bank1 sensor 1).
1995 Oldsmobile 88 Royale LS 3.8L heat control VIN: 1G3HY52K0S
Hello Group, Only got three replies but two were very helpful. Thanks to JR M. one problem was the programmer , located behind the glove compartment a little pricey over $600 from GM, found a good used, unfortunately I never got any testing info to share. The ...
2001 Oldsmobile Aurora 3.5L power steering effort VIN: 1G3GR64H31
Unable to get vehicle back in shop to attempt repairs
1984 Plymouth Horizon 2.2L coolant VIN: 1P3BM18C1E
Thanks for all the help. This car had more problems that made it more expensive to repair than the car is worth. We put some stop leak in it to see if that will help. There were small leaks at the heater valve, I tightened them. The green at the a/c connection...
2001 Volkswagen Jetta Wolfsburg Edition 1.8L engine and trans VIN: 3VWPD69M01
Hey Guy's So many thank's to all that replied and so quickly!!! The customer came and got the car, he wanted to see if dealer would warranty. Come to find out they would pay for flywheel replacement if that was the problem but if it were disc or plate proble...
2002 Volkswagen Jetta TDI 1.9L MIL Lamp on VIN: WVWSP61J23
Many thanks for the suggestions on this one, wow, I was overwhelmed! The issue turned out to be a poor connection between the glow plug wiring harness and the #2 glow plug. I removed the harness and the glow plugs for inspection. Each and every one worked wh... Trouble codes: P0672 (Cylinder 2 Glow Plug Circut).
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