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Prev Professional Automotive Repair Technical Discussions for January 24, 2013
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1999 Acura CL Premium 3.0L No Start VIN: 19UYA225XX
Vehicle came in with intermittant no start, when it won't start the immobilizer light will not light up period, check engine light is on solid and has no communication with PCM. When vehicle starts the immobilizer light flashes twice and goes out, check engine...
2001 Audi A4 Quattro 1.8L heater VIN: 2001AUD1A4
I have a 2001 audi a4. Cust. came in with no heat from any vent.Scanned hvac No faults.Checked blend door behind hvac head moving when commanded. Temp guage low when hot below 1/4 replcd change. No faults.checked flow through heater core,found no flow...
2010 Audi S4 3.0L Front wheels VIN: WAUDGAFL0A
I thank anybody who takes the time to read and reply. Originally, this is a totalled vehicle that has been repaired and titled as a salvage. A front end collision is what i see because there are junkyard markings on the passenger front axle shaft and upper rea...
1993 Cadillac Eldorado Touring 4.6L Trip Computer VIN: 1G6EL1299P
The Store/Recall and Information Button are inoperative Therefor Codes shown on "banner" (below Speedo/Tach)cannot be reset/deleted. Display On/Off and Eng/Met buttons do work (Same Cluster) Climate part works too
2000 Chevrolet Venture 3.4L No Start VIN: 1GNDU03EXY
i'm reposting this auto,because you can only update one time. this is now a no start unless mass air flow sensor us unplugged. with it unplugged it starts right up but with high idle. with sensor plugged in it coughs and back fires through intake. has new modu...
2000 Chevrolet Impala 3.4L starter VIN: 2G1WF55E8Y
Have a 2000 Impala with intermitant no start issue. Have not been able to duplicate the concern until recently. When I got the car it would not turn over. No power at purple signal wire at starter. Started looking further up the line and discovered I had no po...
2001 Chevrolet Impala 3.4L P/STEERING Return Line VIN: 2G1WF52E31
I repaired p/steering return line,was leaking due to hole rubbed through the line at that time i cut line and repaired with piece of hose and clamps.that repair lasted 1 1/2 years.3 weeks ago it came in with the hose i repaired blown out,so i repaired it and t...
2004 Chevrolet Tracker 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2CNBJ13494
Vehicle runs rough at idle and has p0171 code for bank 1 lean.fuel trim reading -15 to -29 on one bank.checked for vacuum leaks-none found, b1s1 o2 replaced for being lazy.plugs are new,replace with other new ones just to make sure. All associated sensors read... Trouble codes: P0171 (Lean bank 1)
2009 Chevrolet Express 2500 4.8L MIL Lamp on VIN: 1GCGG25CX9
mil light on, po121 acceleration pedal position circuit, is there a campaign/recall for this fault. Scantested vehicle throttle body motor works fine and accelerator pedal looks fine, electrical connectors in good shape. Is there a common fix for this code or ... Trouble codes: P0121
1997 Dodge Grand Caravan SE 3.3L Alt or PCM VIN: 1B4GP44R2V
Customer brought van in and said she's not confident that it"s dependable. Reason is the van sometimes shuts down just going down the road. Sometimes she sees the battery light and other times some of the other warning lts. I scanned the computer and had a 622...
2004 Dodge Ram 3500 Truck ST 5.9L No Start, Stall, Misfire, MIL Lamp on VIN: 3D7LU38C84
This one is starting to make my head hurt.Replaced engine in this monster due to #1 piston.Im losing fuel pump signal to relay,Generator field activation,Intermitant fuel and voltage gauges in dash.Cam sensor signal was the last thing to go(I found that discon...
2007 Dodge Charger SXT 3.5L Pcv VIN: 2B3KA43G17
Vehicle came in 5,000 miles ago blowing blue smoke on engine start up cold & misfiring at low speeds on all 3 cylinders (1,3,5) on drivers side. Found misfiring due to oil fouling of spark plugs. Removed plenum at that time & found plenum had oil in lower 3 ru...
2007 Dodge Sprinter 3500 3.0L Turbocharging system VIN: WD0PF44567
The vehicle was giving a code for "Swirl Actuator Position Error" and repaired and reconnected the clips that came apart connecting the Swirl actuator to the two swirl linkages on both intakes. We cleared the codes and the engine ame alive and was able to boo...
2002 Ford Ranger Edge 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTYR10U12
Customer brought the vehicle in complaining of a misfire in reverse and CEL was on.This truck had a tuneup about 6 months ago at another shop and plugs and wires are motorcraft. test drove and the misfire is there all the time.Pulled codes and found P301 and P... Trouble codes: P0301, P0316, P0172, P0175, P0300
2004 Ford F-150 FX4 5.4L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 1FTPX14584
This vehicle died going down the road. I discovered the bank 2 cam phaser had come apart due to sludged up engine and loss of oil to the left head. The cylinder head has been replaced and it has a new camshaft, cam phaser, timing chain guides, tensioners, a ne... Trouble codes: P0022 (Int cam position timing over retarded - bank 2)
2004 Ford Explorer XLT 4.0L No Start VIN: 1FMDU73K94
Hello Ford techs. This is a hard to duplicate. Customer complained about a no start condition. Vehicle will crank, but not start. Spark is present when this accurs. Sprayed brake clean into vacuum line to verify fuel was not the issue and vehicle still did not...
2007 Ford Mustang 4.0L Hydraulic Clutch VIN: 1ZVFT80N47
Hello everybody and thanks for taking the time to read this! I'm changing the clutch in an 07 Mustang 4.0 and need some advice on how to get the hydraulic clutch line apart. I have a KD B3418 tool that's worked on a bunch of Ford clutch lines but is dimensiona...
2001 Honda Civic GX 1.7L No Start VIN: 1HGEN26491
test drove vehicle & about 3 miles from shop fuel guage began dropping & fuel light started flashing.made it back to shop shut off & fails to start.
2002 Hyundai Sonata 2.4L Misfire VIN: KMHWF25S82
Locate no spark problem. Replace Ecu with used. Can not reprogram with PASS THUR PRO. Made wire connections for hyundai to Pass thur with jumpers. Reprogram starts then connection error and then end of the programing. Hyundai manual says you can just plug in a... Trouble codes: P0301
2001 Jeep Grand Cherokee Laredo 4.7L No Start VIN: 1J4GW48N41
we got this jeep towed in from another shop. customer said it died going down the road. the other shop replaced the crank sensor the cam sensor and the pcm(used). still no start. i got the vehical and connected the scanner and found that the pcm they put in wa...
2004 Kia Amanti 3.5L Motor Stalls VIN: KNALD12484
Customer was driving down the road and vehicle just died and would not refire. Code P2125 was thrown We replace the TPS and the car ran great fdor two days then the vehicle did the same thing the P2125 is back on. Once it dies if you let it sit for half an...
2006 Kia Sportage LX 2.0L Starting VIN: KNDJF72246
Vehicle came in with intermittent no crank no start. customer stated that most of the time during the no crank condition, cycling the key multiple times will correct concern and vehicle will start. other times the vehicle will start when boosted. Customer also...
2004 Mazda 6 S 3.0L Variable valve timing VIN: 1YVFP80D74
This is my first post ever so forgive me if my formatting is not correct. This vehicle was bought at an auction by a used car lot that I do work for. The cutomer that bought the car was told by the mazda dealer that it needed an ignition coil and a B2 catalyti...
1992 Mercedes-Benz 500SL 5.0L Poor Idle Quality VIN: WDBFA66E0N
Hello Mercedes Techs This car came with the parts described above that were real bad, we replaced all these parts, because engine had a rough idle and a misfire, now we have a rough idle, right after you start the engine cold or hot, for about a minute or two,...
2003 Mercedes-Benz SL55 AMG Kompressor 5.5L abc system VIN: WDBSK74F33
no codes, all calibrated properly, fluid ok, no leaks, raises from normal ride height to max...then drops back to normal after 15 mins. does this over an over while running in park or neutral.why does this do this? how to eliminate this effect or problem?
2006 Mini Cooper 1.6L Forward frictions/Belt
Thank you in advance for any advice. This 06 Mini came in for a noise from the transmission any time the vehicle was in gear. we did some digging and found info about the 2 main ball bearings in the unit get contaminated and make the noise we were hearing. we ...
1986 Mitsubishi Montero 2.6L Hvac VIN: 2BG608104G
insufficient. air leakage or blockage HVAC system. in summary ive replaced: the blower motor resistor, the blower motor itself (montero version) cleaned the evaporator core and sealed both sides of the a/c box with duct tape and new foam tape on the metal "str...
2003 Nissan Altima 2.5L not sure VIN: 1N4AL11D53
Vehicle came in with a no heat issue, and the customer said that the heater core was replaced, so we checked the car out and found out that we have 154 degrees going to the heater core inlet and outlet but when we turn on the blower the car has heat for about ...
2004 Nissan Sentra 1.8L MIL Lamp on VIN: 3N1CB51D54
This Nissan came to me after it was at another shop for a month. The car came in with code p1138 and p1137 stored in memory. Freeze frame for 1137 indicated it happened on cold start 33f. The customer reported that the check engine light only came on right aft... Trouble codes: P1137, P1138
2004 Nissan Sentra 1.8L No Start VIN: 3N1CB51D84
Hello Group,I have this Sentra that came in with a bad starter,I now know that the owner just cranked it to death. It cranks strong now but won't start. It keeps attempting to start but won't run for more than a second. When cranking,the coils spark a few time...
2006 Nissan Xterra X 4.0L Timing Chain VIN: 5N1AN08U46
Vehicle was brought in with a noisy timing chain and upon inspection found the secondary shoes worn down almost to the tenioner. We replaced the timing chains, secondary shoes, guides and the primary tensioner. Vehicle left and came back with a different type ...
1998 Oldsmobile Bravada 4.3L transfer case
This is my vehicle. I have no 4x4 and it is auto 4x4(smart trac).I have no comm with scanner on the transfer case.The ATC fuse is blown.With new fuse in,I have comm now with no codes.Moving car back and forth(20 feet)in shop,I have no front transfer speed sens...
2002 Oldsmobile Intrigue GLS 3.5L No Start
drove in and started fine. Replaced transmission, starter(broken connector), fuel and evap lines and power steering line.desconnected the battery, and now it wont even crank over. Battery is good and charged, fuel pump kicks on.the pcm isnt grounding the start...
2005 Saturn Vue 2.2L No Start VIN: 5GZCZ23D85
just have a question to ask from some who know this and has tried this. This Vue needs an ecm, and wants to install a used one. if i get on a used one , will it run without reprograming? I dont know it it will allow it with a different vin in ecu. I just need ...
2000 Toyota Avalon XL 3.0L Dash VIN: 4T1BF28BBY
customer brought the car back in after the repairs of the drive belts and window motor , he is getting a sound from the dash like a speedometer cable making noise, It starts off on the right like sand noise the about 40 you hear the noise from the instrament p...
2002 Toyota RAV4 2.0L ABS light VIN: JTEHH20V82
We're having trouble testing the 2004 Toyota RAV4's with our emission equipment. Any time we run an emission test it fails due to a false ABS light coming on. No codes stored. Just wondering if anyone knows of a common problem with this condition in the USA or...
2006 Toyota RAV4 2.4L door locks VIN: JTMBD33V56
The car will lock the doors with no one in it. We haven't been able to get it to happen. We were wondering if any of you Toyota guys had seen this kind of problem. It has Toyota key fobs not aftermarket.
2010 Toyota Sienna CE 3.5L Charge VIN: 5TDKK4CC9A
after two alts from toyota this vehicle is a cab w 200000 on it. Wiring clean and intact. Battery light was on when it came in and both alternators since have not relinquished a battery light yet. Not sure if it is just a bad unit but when u do race it up it d...
2001 Volkswagen Passat GLX 2.8L Heat VIN: WVWLH63B11
Hi guys i have a 01 passat no heat at all not overheaing i flushed out heater core the top hose gets hot and both heater hoses are hot bottom hose is luke warm but ice cold air comes out not sure what to do pls help
2009 Volkswagen Tiguan SEL 2.0L Lacks power, intermi VIN: WVGBV95N99
Customer complaint is that sometimes has no power when pulling out of a parking lot, sometimes idles bad. Have been unable to duplicate i cant find much in the way of real world (not in vw dealer) testing and specs. Fuel pressure from the in tank pump goes t... Trouble codes: 00135 (Fuel rail/system pressure too low p0087 intermitant)
2010 Volkswagen Routan SEL 4.0L Cuts out, Stall, MIL Lamp on VIN: 2V4RW5DX7A
Hello everybody, i have this new VW Routan with low mileage only 2640mi that have driveability problem, the engine cannot raise above 3500 rpm and the transmission cannot downshift only upshift or to downshift manual. I have P0016 in PCM and P121C in ABS. If i... Trouble codes: P0016 (Crankshaft/Camshaft timing misalignment Bank 1 Sensor 1), P121C
1999 Volvo V70 R AWD 2.3L No Start VIN: YV1LV62D2X
This is my personal car and it has an intermittant crank no start . It has no ground trigger to the injectors WITH spark and RPM on the Snap on /Genesis scanners .It will start and run for a second then die at times .Have tried all 3 keys with the same no star...
2005 Volvo XC90 2.5T 2.5L ignition lock VIN: YV1CZ592X5
Hello all, working on a volvo here with an ignition that turn past 1 positioin I know it needs an ignition My question is, Where can I get a good coded ignition without going through the dealer? And do I need any special tools/programming to replace it? I work...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2001 Audi A6 Quattro 2.8L Misfire VIN: WAUEH64BX1
Thanks for the help. We removed the left cam cover and found the chain tensioner upper rail cover missing. found that although the exhaust cam was lined up, the intake cam was off. I was hoping not the take the timing belt off to replace, but no such luck. Ha... Trouble codes: P1347, P0300, P0304, P0306, P0305.
2004 Audi A8 Quattro L 4.2L gauges and lights VIN: WAUML44E74
I would like to thank Jerry, Timothy, Long, and Pual for taking the time to reply. They were all correct. The battery control module must be programmed with the type and serial number of the battery that is installed. It is very specific and only gives you 4 o...
1998 BMW 318i 1.9L water pump VIN: WBACC0329W
We did use the two 6mm threaded holes on the water pump body to press the pump out of the block but the water pump was stuck inside the block still because the impeller blade (a stamped stainless piece) broke and prevented the removal. A ring that goes around ...
1995 Buick Regal Custom 3.1L Fuel Pump VIN: 2G4WB52M9S
After checking everything several times, it finally made sense to remove the new fuel pump which was defective and install another new one. I want to thank everyone for their help.I did like Dan'S idea from Hob's garage in texas on his test hose with dual gate...
2001 Cadillac DeVille 4.6L Unknown VIN: 1G6KD54Y01
2005 Chevrolet Colorado Z85 LS 3.5L Power lock/window VIN: 1GCDT136X5
Thank you guys for all the help! Turns out the battery had a bad cell in it. I started to notice that the odometer read out would go blank for a moment and then display RHA. No idea what that is but, when weird things electrical start to happen like that, I al...
2006 Chevrolet Impala LS 3.5L Tps VIN: 1N1JD32K66
Thanks for the help everyone. The car is fixed. Flashing the ECM was the fix. IATN is the best! I wish there was more posts like this in the archives for this problem...oh well. Glad I could contribute. Thanks again
2007 Chevrolet Uplander LS 3.9L power steering pump VIN: 1GNDV23W07
Thanks to all for your help. After two delco reman pumps, we bought an OE product from our local recycler. It works just fine .Just goes to show you the quality of our remaufacturing these days. Thanks AC Delco.
1996 Ford F-150 Eddie Bauer 5.0L Hesitation, Poor Fuel Economy VIN: 1FTEX15N1T
Thanks to everyone that sent in their ideas. Unfortunately the customer has chronic health problems and he has been in the hospital since he took the truck so I can't even see the truck until he gets out. One note, the firing order is correct. After installing...
1997 Ford F-150 5.4L Surge VIN: 1FTEF18LXV
Thanks to all the replies,helped me find the problem much faster main problems,the EGR sensor or dpfe was bad,replaced that,helped but still surged,checked for vacuum leaks with my vacuum leak finder,don't have a smoke machine,bad leak behind engine verified ... Trouble codes: P0401, P0155.
2000 Ford Ranger XL 2.5L Stall, MIL Lamp on VIN: 1FTYR14C9Y
Thanks to all who replied. It had been suggested I check the square wave form for the ignition, and the IAC. There were irregular patterns and breaks in the square wave just before it would stall. At this point I assumed the PCM was the culprit. However The cu... Trouble codes: P0302 (Cylinder 2 missfire detected).
2004 Ford F-150 STX 4.6L MIL Lamp on, Throttle inop VIN: 1FTRF12W54
This truck is fixed! You guys were right. Flashed the PCM and replaced the throttle body and it runs like a champ. (By the way, I tried flashing the PCM first, and it didn't solve it. I had to replace the throttle body too.) Trouble codes: 2104 (Throttle Actuator Control System Forced Idle), 2112 (Throttle Actuator Control System Stuck Closed).
2004 Ford F-550 Super Duty Lariat 6.8L Cuts out, Stall VIN: 1FDAF56S24
David made it simple, and true. I posted an update because after my first post I did just what he suggested. Disconnected MAF, and it got all better. I was sure the welder had fried something. I replaced the MAF Monday again, and drove it quite a few times. Al...
2005 Ford Escape XLT 3.0L Shift Interlock VIN: 1FMYU93195
Thanks William [...] for the diagrams. The only ones i could find on shop key were for a column shift vehicle, maybe didnt look hard enough. Anyways, lucky for me it was my uncles SUV so I decided to pull the SJB and with the diagrams was able to trace where...
1993 Honda Civic EX 1.6L idle VIN: 1HGECJAD1P
Fast idle valve was sticking Thanks to all who helpeed out.
2004 Honda Pilot EX 3.5L Heat VIN: 2HKYF186X4
After performing all the test that were suggested we were unable to conclude for sure what was wrong. Thanks to the tips about the heater valve only closing when on full cold, that made more sense and is how it was operating. We suggested a blend door actuator...
2004 Hyundai XG350 3.5L valves VIN: KMHFU45E24
Thankyou to all that replied. After reviewing the replies,some stated that valve to piston damage can not occure if the belt was installed properly, at tdc. One reply said to move the crank aprox. 30 degrees. This would put the pistons down in there bores. We ...
2004 Hyundai Sonata GLS 2.7L srs light VIN: KMHWF35H24
ok after checking everything again, i ordered a seat pad sensor/ weight sensor. before I installed it,I checked the resistance and it was the same that was in the car which worried me. i plugged it in before i installed it and light out. checked resistance wit...
1991 Isuzu Trooper LS 2.6L fuel VIN: JACCH58E9M
Special thanks to Richard. The timing was sure enough out at the distributor. I don't know why the fuel problem but in short the dist has to be put in on #4 and the #2 & #3 cylinders I crossed bass ackwards and she runs as designed. The book shows counterclock...
1996 Jaguar XJ6 4.0L Locks VIN: SAJHX1741T
Thanks to all that tried to help- this vehicle came in with the correct factory black key-we did some basic tests and decided that because this client can be difficult and does not place any value on diagnostic time we sent him to the dealer- no amount of mone...
2000 Jeep Grand Cherokee Laredo 4.0L power windows,dash gauges,security light VIN: 1J4GW48SXY
Removing battery cables and touching them together for aproximately 3 minutes fixed my window problems.Thanks Dave and Stephen Malfatti! Thanks everyone for your suggestions.
2006 Jeep Liberty Sport 2.8L MAF sensor VIN: 1J4GL48546
I would like to thanks everyone for they time and advise. Despite best effort I was not able to solve this problem, Customer drive to the dealer for further checking and repair. When I know the final result I will post it here. There were lot of info about ch...
2008 Jeep Grand Cherokee Laredo 3.7L Misfire
2006 Lincoln LS Sport 3.9L Hesitation VIN: 1LNFM87A16
Thanks for all the help, replaced all coils and plugs and vehicle is now fixed! Seems the coils generate RF frequencies when they start to go bad and that can cause all sorts of weird electrical issues. Trouble codes: U1041 (Vehicle speed signal missing), U1262 (Scp data link fault).
2004 Mazda 6 S 3.0L Motor
Okay, starter was the trick. Got everything done last night including R/R rear rotors, pads, sandblast caliper brackets, new hardware, and lof. Put her outside at 5 pm last night, came in this morning at 630 am... 8 degrees here in the motor, fired up like a b...
2008 Mazda 5 Grand Touring 2.3L heat VIN: JM1CR29L98
i raised front end of car as high as possible after warming up engine. ran motor with cap off. air bubbles came to the top and cooling level dropped it was a slow process but air stopped and coolant stayed full test drive showed problem resolved. thanks for th...
1983 Mercedes-Benz 380SEL 3.8L No Start VIN: WDBCA33A9D
took it to the dealer. dealer told him that he needed to replace all injectors - dribbling and the warm up regulator. customer declined repair. too pricey - $2300
2010 Mercury Mariner Premier 2.5L Exhaust Valve VIN: 4M2CN8H73A
thanks for all your replies, we pulled the head and returned it to the machine shop. He checked clearances, and found that he had mixed up the pucks on the valves.
2006 Pontiac Grand Prix GT 3.8L engine VIN: 2G2WT55226
On advice from a friend at GM I hooked a scope to the crank sensor. Left it for 2 days and it finally died on me.In trying to restart the wave form was all over the place. No pattern at all to the wave form. When it finally restarted the scope looked good. ...
2000 Saab 9-3 2.0L MIL Lamp on VIN: YS3DD35H3Y
so i guess what my problem was is that the black plastic piece had spun around 360? so when i reset it, the spring was not on the correct tab. it stayed on the silver tab. once i figured it out, 2 weeks now and customer says all is good. thnks for the input ag... Trouble codes: P1251, P1260.
1999 Suzuki Grand Vitara JLX 2.5L No Start VIN: JS3TD62V1X
Replaced the sensor behind the left head and started right up, comes as a crank/cam combination. Thanks for all the help.
2008 Toyota Yaris LE 1.5L Srs VIN: JTDBW90390
Thank you guys Ralph and Kofi who suggested to use the correct part as not to compromise the safty feature of the vehicle and that of the customer. The correct one connector was used.
2006 Volkswagen Jetta TDI 1.9L 3rd & 6th gear VIN: 3VWST71K06
With more test driving we found that it actually shifts into neutral on the 3 to 4 shift and 6th gear. Thru a miracle, we were able to speak with someone who works at the Volkswagen proving ground about this problem. They felt that since there was a mechatroni...
2007 Volvo S60 R 2.5L No Start, Stall VIN: YV1RH52757
We sent the ECM to Xemodex and had them confirm that it was damaged and not repairable. I was told that they had seen several cases of ETMís failing and taking out the ECM. We were able to locate a used ECM and sent it to Xemodex and they were able to confi... Trouble codes: CEM1A, SUM03.
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