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Prev Professional Automotive Repair Technical Discussions for July 1, 2013
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Help Request Answers
2005 Audi A6 Quattro 3.2L Unknown VIN: WAUDT74F95
The car was towed in as it died on the customer while driving. Customer reported all the dash lights came on and it died. When it came in the battery was pretty weak so I charged it up and it cranks, fired and then immediately stalls. The instrument cluster is...
2007 Audi Q7 3.6L No Start, Stall VIN: WA1AY74L97
This vehicle came with a crank and stall condition. We found a cracked intake manifold. What had caused this? It looked like a bad backfire. Before installing a new manifold, we want to be sure I am not missing something else.
1983 BMW 528e 2.7L cruise control VIN: WBADK7304D
tested power and ground circuits. okay. tested brake and clutch switch inputs. okay. tested switch inputs. okay. What else can be tested, and are there any known faults with the cruise control system.
2001 BMW 530i 3.0L wipers VIN: WBADT63431
hi everyone I have this 5 series in the shop that im going to try and diagnose tomorrow, im not really familiar with this model so im asking for some advise so I have some good ideas when I get in in the morning. the wipers stop working interm. when they stop ...
1995 Chevrolet C3500 6.5L No Start VIN: 1GBKC334F1
Good day everybody, I have this 95 6.5 diesel (vin F) that came in running with code 35, internal error in the injector pump,and 57v PCM shorted. so I put a new pump on it and now I have a no-start. I scan it and get codes 14,31,42,62,58 and 57. I can clear th... Trouble codes: 14 (coolant low or shorted), 31 (map input low), 42 (fuel temp low - high), 62 (boost sensor low), 58 (trans temp high), 57 (5V PCM shorted)
2002 Chevrolet Impala LS 3.8L MIL Lamp on VIN: 2G1WH55K12
hello all Iget these codes relating to the 5 volt ref for the PCM.I have checked for the 5v on each of the sensors,fuel tank pressure sensor,A/C high side pressure sensor,EGR valve ,TPS,and MAP sensor all good.If I disconnect one at a time and start car both t... Trouble codes: P1635, P1639
2007 Chevrolet Silverado 2500 HD LT 6.0L ABS module VIN: 1GCHC24K87
This vehicle has the amber ABS light and the red parking brake light illuminated on the instrument panel. I hooked up our Snap-on Solus Pro with the latest updates installed. When trying to access the ABS data it displays a communication error. The scanner com...
2002 Chrysler Sebring LX 2.7L coolant leak VIN: 1C3EL46R52
Hello fellow techs,thank you for reading this. The sebring came towed in overnight with a no-start condition. The customer was driving on the highway when it suddenly died and wouldn't restart. He mentioned that before the vehicle shut-down, it surged a couple...
2000 Dodge Caravan 3.0L Engine/Trans VIN: 2B4GP2537Y
This van came in for a knocking noise when ac is on. Noise came and went with AC switch on or off. I replaced the AC belt tensioner and noise was gone for 2 weeks. Van comes in same way as first time. So I tell the customer AC compressor is making the noise af...
2003 Dodge Ram 1500 Truck Laramie 4.7L Surge, Misfire VIN: 1D7HA16N13
I was asked to look at this beast by a friend how owns a transmission shop. Took me a while to even get an idea of what's going on! When the truck is cold, if you shift the car from drive to neutral or from reverse to park, then the truck starts to surge & shu... Trouble codes: 79 (unkown code in transmission)
2007 Dodge Caliber SXT 2.0L radio, starting, air bag, key fob VIN: 1B3HB48B27
Customer brought this caliber to us for the complaint of sometimes will not crank, random check engine light, key fob inop sometimes, air bag light always on, intermitent radio speakers wont work(radio is on). cannot duplicate any concern but air bag light. sc...
2004 Ford F-250 Super Duty XL 6.0L No Start VIN: 1FTNW21P14
Thanks in advance to all 6.0 techs who may be able to help. vehicle came in for stalling after running (normally) for a short period of time issue. checked all voltages ,and pressures. determined that injector voltage was dropping to 38 volts, and engine woul...
2004 Ford Escape XLT 3.0L MIL Lamp on VIN: 1FMYU031X4
Two weeks ago, this truck came in, this code, hooked up the Modis. I like the Modis on FoMoCo as it reads data pretty fast. At start up, gas cap off, sensor reads about 2.70V. After a few mintues, the original sensor would start to fluctuate, and what I mean i... Trouble codes: P0453 (Fuel tank pressure sensor performance)
2005 Ford Explorer XLT 4.0L Poor Idle Quality, Misfire VIN: 1FMZU73K35
First off thank you in advance for everyone who takes the time to read this. This truck has me officially stumped. Its a friend of mine which makes it even worse. Truck came in on a hook, will start and run but has a misfire. Sometimes its #3 missing, sometime... Trouble codes: P0300, P0303, P0306, P0316
2006 Ford Expedition Limited 5.4L temp guage VIN: 1FMPU20546
when we origanlly found P1289 in the pcm it would be intermittant - we replaced the cylinder head temp sensor that came with the reman engine with a factory ford part since then the problem became constant - right after replacement the gage would read temp wit... Trouble codes: P1289 (coolant head temp sensor)
1992 Geo Tracker 1.6L No Start VIN: 2CNBE18U2N
The car will not start. ECU will not flash code 12 when self diagnostic terminals are jumped. Fuel pump relay chatters when ignition is turned on. The two wires that power the ECU (A1 and A7) both have battery voltage, key on and cranking. The Alldata flow cha...
2003 GMC Yukon Denali 6.0L Poor Idle Quality, Misfire, MIL Lamp on
hi posting for my brother in law been getting code po300 missfire so we relaced wires and plugs maf meter and air filter truck will still set code at times and idles at 550rpm graphed o2 sensor all ok preformed ckp varation,sprayed for intake leak did not show... Trouble codes: P0300
2004 GMC Envoy SLE 4.2L MIL Lamp on
Thank in advanced I have a 2004 envoy 4.2 lt, changed the evap vent solenoid was sticking. Still have large leak code. Tested wiring and have 12 volts on both wires key on and engine running .With the scanner I can control ground and shut the vent solenoid off... Trouble codes: P0455 (Large leak)
1991 Honda Civic DX 1.5L air control valve VIN: 2HGED6350M
Following the advice I received from several Honda techs on iATN I removed and thoroughly cleaned the idle air control valve. It can not be disassembled but I filled the valve with the cleaner, allowed it to soak overnight and reinstalled the valve. During sho...
2005 Hyundai Santa Fe GLS 2.7L engine overheated VIN: KM8SC73D95
I'm looking for a little direction on removing the engine. Shop information says it's a 19 hr. job and everything drops out the bottom. However, after making a few quick measurements it sure looks like it would come out the top. Has anyone ever tried this and ...
1989 Jeep Cherokee Limited 4.0L cooling system VIN: 1J4FJ78L7K
Overheating 1989 Jeep Cherokee
2007 Jeep Liberty Sport 3.7L horn VIN: 1J4GL48K97
good morning, This jeep liberty has an electrical gremlin. Customer complained of horn going off(solid not pulsing) in driveway and having to disconnect battery. He brought the vehicle down to the shop no obvious problems but was able to duplicate concern by p...
2005 Kia Amanti 3.5L No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, MIL Lamp on VIN: KNALD12455
Thank you for your help. I must be missing something with this car. 06/2011 the car started running poorly, no acceleration and stalling. Had code P2108. From my understanding of this code it is a checksum error between the Electronic Throttle System Control M... Trouble codes: P2108
2006 Kia Sedona LX 3.8L leak VIN: KNDMB23326
I was wondering if any Kia techs would know of any common leaks in an 06 Sedona, I have recharged it 3 times and added dye to the system but cannot find any obvious leaks, I suspect one of the evaporators but hate to guess, tried looking at the condensation tu...
2003 Lexus IS300 3.0L Ac VIN: JTHBD19253
This Lexus came in about a month ago and the compressor wasn't creating any pressure at all. Customer installed his own compressor, expansion valve, dryer and flushed system, brought it back to be recharged. Once evacuated and charged the high side pressure wa...
1997 Mercedes-Benz C280 2.8L compressor clutch VIN: WDBHA28E1V
got this mercedes for inop ac. hooked machine up and found next to no freon in system did a ac service and added recomended amount of freon. started vehicle up ac started working blows cold. had vehicle running for a few minutes checking for ac leaks when i no...
2003 Nissan Murano SE 3.5L Right Axle Seal VIN: JN8AZ08W63
We replaced the transmission on this all wheel drive Murano with a Nissan factory unit. After test drive we noticed the right axle seal leaking. This seal is part of the transfer case. We replaced the seal and it is still leaking. The seal appears to be ripped...
2005 Nissan Frontier LE 4.0L Transmission VIN: 1N6AD07U45
This vehicle has ran great for the original owner, till the other day. cust states he pulled in his driveway, and would not pull up driveway, worked fine in reverse. towed to shop found front ujoint bad i mean real bad thought that would do it no help scan the...
2008 Nissan Titan SE 5.6L Unknown
Howdy everyone. I first want to start off by apologizing for no vin. This is a work truck and this man had some much "stuff" on his dash, he is paying us to remove the dash pad so he can see the vin. He does contract work for the local air force base and they ...
2001 Pontiac Grand Prix SE 3.1L No Start, Hesitation, Cuts out, Stall VIN: 1G2WK52J91
Guys I Replaced intake manifold gasket . The car ran Great for 15 miles now runns poorly no codes checked power and grounds at ECM all good Replaced ECM Same Thing Redid manifold gasket Same Thing The EGR Valve Stays open Being Grounded Through ECM Even At Idl...
2005 Pontiac Grand Prix GT 3.8L Cuts out, Stall VIN: 2G2WS52245
This engine cuts out, quits no warning while driving. We have clocked it at 13 to 16 min.s into a drive from a cold start. We did a "re-flash" the PCM as we thought it might have gotten "scrambled" somehow. ( we have seen other GM products in the past have som...
1994 Toyota 4Runner SR5 3.0L No Start, Poor Idle Quality VIN: JT3VN39W8R
Hello everybody, I have a 1994 Toyota 4 Runner here that is not running. Found that it has spark but no injector pulse. Comes up with a code 14, no IGF or IGT signal at ECM. Found a bad body ground and repaired it. It ran poorly for about 5 minutes then died a... Trouble codes: 14 (ECM not recieving IGF or IGT signal.)
2007 Toyota Avalon XLS 3.5L Compressor VIN: 4T1BK36B27
We checked for HVAC codes and retrieved B1421 and B1424. When the A/C switch was pushed the light came on and the compressor clutch engaged, but the high and low side pressures were equal as if the A/C was not turned on. The system had plenty of charge in it, ...
2010 Toyota Prius 1.8L Master Cylinder VIN: JTDKN3DU5A
Customer complaint is ABS, Brake and Skid control lamps in instrument cluster are on. I found the brake pedal sinks to floor and code C1214 (fault in hydraulic system). We feel the problem is in the brake master cylinder (hydraulic brake booster assembly) whic...
2001 Volkswagen Jetta TDI 1.9L No Start VIN: 3VWSP69M01
Need help with a VW jetta diesel! We put a fuel filter and timing belt on this car for maintenance last week. Car was running great with no problems before work was done. The car sat a the shop 3 days before work was done and started just fine and drove it in ...
2003 Volkswagen Passat GLX 4 Motion 2.8L engine VIN: WVWVK63B63
Runs real low on power sets codes p0016 p0017 p0018 p0019 every time. There is not a lot on diagnostics do I need to go into the cam timing?
2005 Volvo V70 2.5T 2.5L Hesitation, Surge, Cuts out, Stall VIN: YV1SW59265
This Volvo is giving some issues. I have so many jobs to complete I haven't much time for diagnostics. The customer brought in the vehicle stating sometimes stalls, bucks under wide open throttle. Codes pulled as listed above. I suggested the fuel pressure sen... Trouble codes: 290C, 280B, 280C, 212C, 21EC

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2000 Audi A6 Quattro 2.8L ABS/Bleeding VIN: WAUEH24BXY
What an interesting repair. When we finally decided to order a new booster, that was the turning point. The rebuild on the ABS unit was necessary to communicate and put the ABS back on line BUT the reason the car would not stop was no vacuum boost. Once we to...
2006 Audi A4 2.0L Excessive Emissions, MIL Lamp on, Unresponsive Turbo VIN: WAUAF78E26
Thanks to every members who replied my post.I did a cylinder leak down test for all 4 cylinders and it was all perpect.Then,I removed lower turbo cooler hoses that I found a lot of fresh engine oil. So,I think no turbo boost and oil burning issue were due to d... Trouble codes: P1093 (Bank 1 Fuel Measuring System 2 Malfunction), P0139 (Oxygen Lambda Sensor B1 S2 Response too Slow), P1114 (Oxygen Lambda Sensor B1 S2 Internal Resistance too High), P0299 (Boost Pressure Regulation Control Range Not Reached).
2004 BMW 330Ci 3.0L rotors VIN: WBABD53464
thanks guys for all the info, I went ahead and measure hubs for run out, fully inspected suspension and everything else listed by you guys, I did not find anything wrong, I did clean the hubs till they look like new, just as last time. once again using all dea...
2003 Cadillac DeVille 4.6L Brake Fluid Level VIN: 1G6KD54Y63
Thanks to all that replayed. It was the master cylinder reservoir.
2010 Chevrolet Equinox LS 2.4L Poor Idle Quality VIN: 2CNALBEW8A
Thank you for all your suggestions. As pointed out it is not possible to check fuel pressure from high presure pump. The injection cleaning/intake cleaning did not help. Customer scheduled to take it back to dealer in hopes the high pressure pump was at fault ...
1966 Dodge Charger 6.3L Pads And Rotors VIN: XP29G61254
Thanks for all of the replies. Many gave part numbers but they all came back to Bendix brakes which this system was not. John [...]. all were correct on the Kelsey Hayes setup. The parts are very hard to find and bring a premium price...
2001 Dodge Dakota R/T 5.9L Poor Idle Quality VIN: 1B7GL22Z71
Confirmed engine valve issue, compression peaks uneven with running compression test Trouble codes: P0304 (p0308-), P0308.
2002 Dodge Dakota Sport 3.9L Misfire, MIL Lamp on VIN: 1B7GG32X92
Was gonna post an update but I guess IATN frowns on that when it's not really soon as I read your replies to my hit me like a ton of bricks!!!You guys were right about that O2 sensor.I ran into this on a jeep 4.0L a long time ago d... Trouble codes: P0300, P0301, P0303, P0305.
2006 Dodge Durango Adventurer 4.7L Door seals? VIN: 1D4HB48N56
Guys,I tried everything suggseted & nothing worked.I ran out of time with my customer & had to return the vehicle.Hopefully I can get it back in the near future to figure it out.Thanks,Bikk
1996 Ford F-250 Eddie Bauer 5.8L wiring VIN: 1FTHF26H7T
I got everything connected correctly, FINALLY! Most of the wiring was pretty straight forward. There is only 1 brown/org wire. But there are 2 purple/org wires. There is also 1 gry/ylw wire that does not go anywhere. Besides dirt, grease, and fading, the ...
1999 Ford F53 6.8L radiator VIN: 3FCNF53S0X
First of all I want to Thank all who replied and offered their knowledge. Well the final fix was a New Radiator. Installed new radiator and after bleeding the cooling system- Ford really should have installed a bleeder on these vehicles so the process was quic...
2001 Ford F-250 Super Duty Lariat 6.8L reverse VIN: 1FTNX21S31
I did drop the pan and no metal pieces were there just some sludge in the bottom valley of pan. The fluid was black and stunk. Customer decided to hold off repair for now. Thanks to all.
2003 Ford Thunderbird 3.9L Timing Chain VIN: 1FAHP60A03
Thank all of you for your help.You were correct about the timing chain tensioner.The customeer is going to have me do the repair work.You always learn something when you do a job like this. Thanks again for all your help.
1995 GMC K1500 Sierra SL 5.7L Speedometer VIN: 1GTEK19KXS
It was the Ignition Switch. Thanks for all the help.
2003 Infiniti G35 3.5L E8 and E9 Connectors to the IPDM VIN: JNKCV54E83
Finally solved the issue, car runs perfectly no trouble codes, here are the terminals and their respective colors: 17 - Backup Lamp/Clutch Interlock - White with Green Stripe 18 - Washer Motor - Orange 19 - Data Link - Green/Yellow Stripe 20 - ECM - Black/Ora...
2000 Jaguar S-Type 3.0L dynamic stability VIN: SAJDA01C7Y
Sorry I forgot to close. Customer opted out of the fix. After talking w/ Identifix I found that the switches in question were in the booster and were just open or closed switches. They are used to determine the amount of booster assist ( pedal effort) is goi...
1997 Jeep Wrangler SE 2.5L Poor Idle Quality VIN: 1J4FY29P2V
Thank you for replying to my request. I tried loosening the rocker arms and even adding shims until it actually was tapping, but no change. I should have mentioned before that i did test the tps and all vital sensors. I decided to call the customer and have hi...
2008 Mercedes-Benz E350 4Matic 3.5L pinion bearing VIN: WDBUF87X88
Well no one makes bearings for this diff. Ugh. Had to buy diff from dealer. Mercedes apparentley has a patent on this bearings. they are not available to anyone else.
2006 Mercury Mountaineer Premier 4.6L Bucks Trans Slams VIN: 4M2EU48876
Get a load of this Kevin from Mass Hit this with the first reply. Thinking outside the box fixed this. The spark plugs - coil packs were causing enough RFI interference to invade the Can + Dataline knocking the TCM off line. - Trans would go into Limp home ... Trouble codes: P0528 (Fan clutch error), U0101 (Lost comm with TCM), U1900 (At times in ABS SRS Ocupant system).
2006 Nissan Quest SL 3.5L MIL Lamp on VIN: 5N1BV28U86
So far, so good. The responses I received all said that not performing a system relearn can cause this code to reset. Performed that procedure and it hasn't been back in almost a week. Other problems noted were small exhaust leaks behind heat shields, I smoke ... Trouble codes: P2A00.
2006 Nissan Maxima SL 3.5L No Start VIN: 1N4BA41E76
Thanks to all that replyed. I did recomend That the IPDM and PCM be replaced but they declined. I did have scan data and it showed RPM's while cranking and it had both cam signals as well as a good crank signal with all in good alignment. There were no injecto... Trouble codes: P0123 (Tps), P0222 (Tps 1), P2135 (Tps).
2006 Pontiac GTO 6.0L Key-less fobs VIN: 6G2VX12U46
seems as if onlt three remotes can be programed and Now I have to do some digging to learn what to do. All I need is to erase the original two remotes
2002 Subaru Outback Limited 2.5L a/c VIN: 4S3BH68602
the condenser was plugged, after letting the engine compartment cool for a couple of hours i started it up and within 2 mins could feel discharge line from compressor and only the top part of condenser was hot with a/c running (very hot) the lower part of con...
2001 Toyota Camry LE 2.2L Poor Idle Quality, Stall, Misfire VIN: JT2BG22K01
Thank you all. After studying the Camry engine wiring, and after disconnecting the cam sensor did not cause the engine to quit or not start, I replaced the crank sensor, and raised the idle slightly with the idle stop. After this the engine never did quit aga...
2002 Toyota Corolla CE 1.8L Stall, Misfire VIN: 2T1BR12E72
The customer needs to use the car for a while and will bring it back in few weeks. I will update this request if more develops. Many thanks to all that responded.
2003 Toyota Camry SE 2.4L No Start VIN: 4T1BE30K73
thanks for the info. Ended up being a starter too. Trouble codes: P0513 (Incorrect immobilizer key).
2010 Toyota Sienna CE 3.5L rear brakes VIN: 5TDKK4CC6A
Replaced rear brake pads and hardware. Bakes now working good
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