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Prev Professional Automotive Repair Technical Discussions for August 6, 2014
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Help Request Answers
2006 Audi A4 Quattro 3.2L 3-4 gear VIN: WAUDG74F96
While driving the vehicle during normal conditions, the vehicle starts to shift up 1st gear, 2nd gear 3rd gear, 4th gear then back down to 3rd gear. After the vehicle does that initially it will shift normally up and back down. It does it in either automatic s... Trouble codes: P0783, P0068, P307A
2007 Audi A4 Quattro 2.0L oil consuption VIN: WAUDF78E47
we have this audi that uses oil,and smokes out of the tail pipe-so much so that the vehicle is not drivable.there are no codes,the vehicle runs well,has plenty of boost.checked crankcase psi,has a slight vacuum,but not full manifold vacuum.removed bank 1 02 se...
2008 Audi A4 Cabriolet 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAUAF48H98
car runs perfect when cold and under load. Live data short term fuel trims within spec when running good, seems to be once warmed up short term fuel trim goes all the way to lean 25. with no obvious vacuum leaks. At that point also car will begin to misfire. I... Trouble codes: P0171, P0300, P0301, P0302, P0303, P0304
2002 BMW X5 4.4i 4.4L Suspension VIN: 5UXFB33592
The BMW came in with the suspension inactive light on, and it was on the ground, and had code 64 distortion plausibility. I cleared the code with my Solus Ultra and filled all the air bags and found bot on the right leaking. I replaced all 4 air bags, and cali...
1999 Buick Park Avenue 3.8L Turn Signal/Hazard VIN: 1G4CW52K8X
This vehicle came into my shop with some strange turn signal function. The customer told me that her brother had removed the bulbs from the left side because the LR bulb had stayed on causing her battery to go dead. I replaced all the bulbs with 3057's (most h...
2003 Buick LeSabre Custom 3.8L Codes -no lamp VIN: 1G4HP52K73
2002 Chevrolet Impala 3.4L No Start VIN: 2G1WF52E52
good evening this vehicle was towed here and left customer said no start checked fuel pressure 55 ibs. checked for spark no spark,connected modis to vehicle,no codes no history codes no freeze frame codes,check the data display have rpms on 3x crank sensor and...
2002 Chevrolet S10 4.3L Low Beams VIN: 1GCCS19W02
Hello out there in car land and help!!! I have this 2002 S10 pickup in that is intermittently loosing its low beams while the customer drives. He will be driving along and out both of the low beams go but the high beams work. The low beams will start working ...
2008 Chevrolet Avalanche LS 5.3L No Start VIN: 3GNFK12318
Hello, this Avalanche won't start sometimes. When that happens there is no communication with the FPCM. Later it starts. It never dies, just cranks but no start at times. No amount of wiggling wires seems to have an effect. We can't decide if it "got better" a... Trouble codes: U0109 (ecm no comm with fuel pump module)
2011 Chevrolet Silverado 1500 LT 5.3L Passenger Presence VIN: 1GCRKSE31B
Hello techs. This is a used truck off my lot. The "Service Air Bag" light came on. Pulled code B0081-5a Passenger Presence System 1 Calibration not learned. My shop was backed up 2 weeks so I sent it out to the GM store for diagnosis. I was told that it needed...
2006 Chrysler 300 C 5.7L Engine VIN: 1C3H9E3H76
Hi Guys this Chrysler has a blow up the engine, the coolant dropped and no 6 and 8 cyl has lost compression. We put a camera down no 6 plug hole and the piston has copped a hiding. I am having trouble buying and engine in Australia and thought you guys in the ...
2006 Chrysler 300 C 5.7L Suspension VIN: 2C3KA63HX6
looking for someone who has a history with the front suspension on these models. I have in the past replaced the radius arm link that goes to the front.(not on this car) These are both good on this car, looks like they may have been replaced elsewhere. I am ge...
1996 Dodge Ram 1500 5.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3B7HC13YXT
Pulling my hair out big time... Truck runs amazing cold, but when it heats up to temp, it misses hard. I tried sticking a digital scoping camera into cyl 4 and the valves look fine. Compression check on cylinder 4(135psi) and 6(145psi) are close. Im not sure w... Trouble codes: P0300, P0304
2007 Dodge Nitro SLT 3.7L dash lights tachometer VIN: 1D8GU58K97
Customer reported they were driving when several dash lights illuminated. Car was brought in for analysis. Car runs and shifts normally. The alternator is charging and the battery tests good. Scanned for codes and found various U codes. U codes were found in t...
2008 Dodge Charger SXT 3.5L Tpms VIN: 2B3KA33G48
Sorry for this long post! Vehicle first came to me in 11/12 with a long delay between turning the key and starter engagement. I replaced the WIN Module and all was good. Car came back 3 months later and the return spring in the WIN broke and customer had to re...
1966 Ford Mustang 4.7L Misfire
Group we installed a 5 speed trans and rebuilt motor in this car several months back. Came in with a misfire complaint and I found number 8 has no fire. I checked and wire had low resistance and plug looked good. I have no fire out of distributor cap on that c...
2001 Ford F-150 King Ranch 5.4L speedometer VIN: 1FTRW08L31
I have a ford f150 that blew out a spark plug, and the customer decided to drive to the shop instead of pay a tow bill. He didn't make it. The coil shorted on the block and fried the pcm. I replaced and programed in a reman computer. Now i have no speed signal...
2003 Ford E-450 Super Duty Custom 6.8L Belt VIN: 1FDXE45S83
Ok guys could really use help i have this e450 that was made into a bus by federal it has 2 a/c compressors ive called federal and they said they have sold that division off .they told me the company is now acc climate control i called them with no help all i ...
2003 Ford Escape XLT 3.0L Differential VIN: 1FMCU93153
backing up with wheels turned on either side front wheels will lock , put rear wheels in the air they turn free ,front wheels in the air don't turn on either side is not the brakes because as you start lifting the front of the truck you can see the tire turn s...
2006 Ford Five Hundred Limited 3.0L abs VIN: 1FAHP28116
This fuse #19 controls power to four modules and the rss. I am not a good electrical tech so if some one can point me in a good direction to start, i will appreciate it. Thanks in advance for all your time and help.
2006 Ford F-250 Super Duty XLT 6.0L Hesitation, Poor Fuel Economy, MIL Lamp on VIN: 1FTSW21P16
Truck came in last week with complaint that it was slow to accelerate and MIL on. Another tech at our shop found the egr valve plugged up with carbon and replaced. Also replaced the fuel filters and the air filter and cleaned MAF. Reset KAM and seemed to be fi... Trouble codes: P0299, P1408 (Egr flow out of range), P2263 (Turbo boost system performance)
2007 Ford F-250 Super Duty XLT 5.4L Hesitation, Cuts out VIN: 1FTSX21537
Thanks to all of you ahead of time.the problem is that you cant snap the throttle or it falls on its face & pops back like lack of fuel, sometimes stalls even after you let off, does this in park or in gear.can be driven down the road & acts normally as long a...
2012 Ford Transit Connect XL 2.0L All circuits VIN: NM0LS6AN4C
Vehicle has very intermittent stall condition. When the problem occurs, there are no dash lights and the key does nothing. Removed electrical part of ignition switch to manually operate, but vehicle wasn't stalling at the time and wiggling the harness and sw...
1993 GMC C1500 Sierra 4.3L Poor Idle Quality VIN: 1GTEC14Z4P
hey guys! Got a goofy one! occurs only on a hot soak, about 10 min after a test drive. low, rough idle for about 30 seconds then its like u flip a switch and it is perfectly normal. Runs great after that until next hot soak. Replaced fuel pressure regulator fo...
2004 GMC Sierra 2500 SLE 6.0L Engine Misfire VIN: 1GTGC24U54
Vehicle came in with P0300, Random misfire. We changed to spark plugs and wires due to high millage and the vehicle was due for a tune up. When the misfire was still present we continued testing. When we induced propane into the valve cover at the pcv port (bl...
2004 GMC Sierra 1500 SLE 5.3L Mechanical VIN: 2GTEK19T64
Car does not start has good fuel but no spark cranks no problem ... Have power to the main coil harness..does have a crank signal on scanner.
1996 Honda Odyssey EX 2.2L horn VIN: JHMRA1871T
For decades I've taken for granted that a steering column was grounded, but this one doesn't seem to be. If the key is out of the ignition, and the steering-wheel lock is engaged in the steering column, the horn will work anytime a button is pressed, just like...
2000 Isuzu Rodeo LS 3.2L No Start VIN: 4S2CK58W8Y
Hello Guys" DOES ANY BODY HAVE THE WIRING DIAGRAM FOR THESE RODEO?...I dont have the Mitchel or other...
2006 Lamborghini Gallardo 5.0L Brake wear indicators VIN: ZHWGU12T76
We replaced all the brakes on customers 07 Lambo with the correct Lambo brake pads w/sensors. Cost from Dealer $1100.00. After installing pads the "brake pad wear indicator" light came on. This light was not on before we replaced the pads. Could not find much ...
1994 Lincoln Town Car 4.6L Excessive Emissions, No Start, Poor Idle Quality, Hesitation, Surge, Cuts out VIN: 1LNLM81W1R
Alright looking for insight please. Thanks in advance for any help. This Lincoln came in with a no power/backfire rough idle complaint. Did some looking, had spark, fuel pressures were right in the safe zone 40 KOEO around 36 KOER. Unplugged the MAF after look...
2004 Lincoln Navigator 5.4L MIL Lamp on VIN: 5LMFU28R34
Truck originally came in with p0171 & p0174. I found it only had 20 pounds fuel pressure with no rise vacuum unplugged.Replaced pump, pressure regulator and upper and lower intake gaskets.Now has p0174 with close to 10-12% fuel trims on bank 2 and under thrott... Trouble codes: P0174 (Lean bank 2)
1993 Mercury Cougar XR-7 3.8L Poor Idle Quality, Misfire VIN: 1MEPM6243P
Thanks for taking the time to help me out. This car came in cutting in & out at cruise, and rough idle that developed very quickly over the course of one day. We changed the spark plugs and the problem was gone...for 1 day. The problem came back in the form of...
2005 Mercury Grand Marquis LS 4.6L Gauges VIN: 2MEFM75W75
when driving dash warning lights will come on and volt gauge will peg max customer said temp gauge went max. the power steering wont loose all assist but will get harder than normal and the hvac system completely quits and screen goes blank.
2005 Mini Cooper S 1.6L Electronic VIN: WMWRE33535
Cant figure this one out replaced the range sensor and pretty sure its lined up correctly. when placed into gear immidiatly goes into limp mode and same code comes back
2004 Mitsubishi Galant ES 2.4L starter VIN: 4A3AB36F94
Starter was grinding, it sounded nasty. I removed starter and found the drive gear shaft bearing broken in the starter and had play in it. Found flexplate ring teeth to be a little boogered up. I filed each tooth with a hand file and only removed burrs. Reasse...
2006 Mitsubishi Raider LS 3.7L No Start VIN: 1Z7HT28K26
Hello Mitsu tech's. This has a bad PCM, which is a Dodge in disguise. We are in a area that has no dealer to program. We have the Pass-thru tool and have programmed other cars. Mitsu's page says to go to chrysler's page. every time I try to download the PCM so...
2005 Nissan Altima S 2.5L engine VIN: 1N4AL11D95
This vehicle just had a used engine installed and has a loud rattle on startup after it has sat for an hour or more. Noise lasts about 3 seconds and goes away. Makes no noise after thet. Noise sounds like it is coming from timing chain area. While I am sure th...
2007 Nissan Versa SL 1.8L No Start VIN: 3N1BC11E17
This is a really strange one. Our Tech replaced head gasket because of very small coolant leak. After finished, car cranks but will not start. Has no injector pulse, coil fires once per crank cycle, then no spark. Consult registers 263 rpm when cranking. 5V re...
2012 Nissan Versa 1.6 S 1.6L p0171 VIN: 3N1CN7AP1C
hi again guys, customer came in with a p0171 code. right away i changed the dirty air filter, cleaned the maf sensor and cleaned out the throttle body. cleared the code and went for a ride. the code came back on about 10 min. into driving. i pulld up a flow c...
2001 Saturn L300 3.0L Misfire VIN: 1G8JW52R61
Car came in with intermittent random misfire. Computer was reprogrammed in past for random misfires by dealer according to tsb. Replaced plugs, coils, and valve cover gaskets. Vacuum at idle is 20in.. Vacuum in drive with ac on is 15in.. Checked for vacuum lea... Trouble codes: P0300, P0301, P0302, P0303, P0305, P0306
2002 Toyota Avalon XL 3.0L compressor VIN: 4T1BF28B52
I have an Avalon the is eating my lunch. The compressor clutch will not engage at an idle. The a/c light doesn't flash like some will do, it stays illuminated. This doesn't have the clutch relay that always goes out but for good measure I swapped it with anoth...
2005 Toyota RAV4 L 2.4L MIL Lamp on VIN: JTEHD20V85
2005 toyota rav4 Trouble codes: P0121 (Throttle/pedal a performance)
2004 Volkswagen Jetta GLS 2.0L Hesitation, Cuts out VIN: 3VWSK29M44
This Jetta will (very intermittently) loose power or cut out while cruising. Feels like the ignition is turned off momentarily. No codes found, and scan tool data looks normal. Otherwise runs perfect. Ignition system is new, although aftermarket and not instal...
2010 Volkswagen CC Sport 2.0L rear windows VIN: WVWMN7AN2A
Hello to all especially you VW tech gurus. I have this 2010 CC with both rear window motors inop. I have traced the problem to the supply voltage to the control module in each door. Only have 2.3 volts, with connector plugged in and unplugged from module. I ha...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2005 Audi A4 1.8L oil pressure VIN: WAULC68E75
Thanks to everyone for the info. replaced the pickup tube and pump. Pulled valve cover and inspected timing chain guides. All looked good checked all possible origins of plastic and found no issues. Valve cover gasket looked fairly new like someone had been...
1997 Buick Park Avenue 3.8L Power Windows And Door Locks VIN: 1G4CW52K0V
replaced drivers door module. everything works normal now. thanks to all that responded.
2000 Chevrolet Express 1500 5.7L Hesitation, MIL Lamp on VIN: 1GBFG15R8Y
Okay all is good. Thanks for the replies. Installed new MAF and took it out first thing this morning and ran great !!! Trouble codes: P0171 (Lean exhaust bank1), P0174 (Lean exhaust bank 2).
2004 Chevrolet Tahoe LS 5.3L Battery VIN: 1GNEK13Z84
Customer was instructed to leave radio fuse out. No longer any problems starting. Whatever was coming on and going off probably wasn't an issue. New radio will be installed to remedy the parasitic draw. Thanks for all the help.
1969 Ford Thunderbird 7.0L Mechanical
First I would like to say thank you to all that replied. The drier was the problem it must have some blockage or something in it. We installed a new and check the lines they were fine. Its back to blowing nice and cold. again thanks for the help
2004 Ford F-250 Super Duty XLT 6.0L Noise VIN: 1FTNW21P94
Lots of information on this issue but nothing absolutely conclusive. Most replies stated that almost all of the trucks do it to one degree or another. Early turbos had tighter tolerances and were more prone to sticking. One poster stated that later calibration...
2005 Ford F-350 Super Duty XL 5.4L Poor Idle Quality, MIL Lamp on
I would like to thank everyone the helped with there info sorry for the delay update. The pcm was the problem caused by the after market coils that burned out a few of the drivers that supply ground to the coils. The truck is runing great with the OE coils & n... Trouble codes: P0351 (p0354-), P0354 (p0355-), P0355 (p0356-), P0356 (p0358-), P0358.
2005 Ford F-250 Super Duty XL 6.0L long crank VIN: 1FTSF20P55
I thank you very much to all that reply,i struggle i bunch trying to figure out this issue,i started from scratch i made sure i had base oil by removing the oil filter and watching the oil level rised while cranking the engine which is ok,and then i pressurize... Trouble codes: P2291.
2001 Honda Civic LX 1.7L Rough shift VIN: 2HGES16581
thanks for all the responses i must be going blind found a broken wire by the tcc connector have a good day my friends sean
2007 Hummer H3 3.7L Unknown VIN: 5GTDN13E37
unpluged wiring plug at encoder moter cleaned connector found alittle corrosion on the black wire.alsob put star washers under all 3 bolts on the encoder moter for a better ground.code message went away.thanks for all the help.
2003 Hyundai Santa Fe GLS 2.7L Mechanical VIN: KM8SC73D23
Thanks for everyone that replied. After sharing what I learned with the customer they decided to go ahead with the repairs. after replacing the valve cover gaskets, plugs and wires the vehicle ran great. finishing up with the rest of the repairs now. Thanks,An...
1997 Lexus LS400 4.0L evaporator core VIN: JT8BH28F0V
customer did not return for repairs replies said to remove glove box and blower housing without pulling ,dash if customer returns for repairs I will post what I did
2003 Mazda 6 i 2.3L No Start VIN: 1YVFP80C63
Well 1st of all I want to thank every one for your help and your response. We Finally FIXED this Mazda!.. Soon after I left my last message that I wasn't getting any fuel I went to the vehicle and checked the fuel injector fuse and noticed that the fuse was b...
2005 Mazda 6 i 2.3L No Start VIN: 1YVFP80C55
i want to thanks every single one for the help or a lease for read my request. I checked the timing like you said, all is good, wiring from crank and cam sensors, all tested good, finally installed a used computer and retested, engine starts and runs, means i ...
2007 Mazda 3 i 2.0L mounts VIN: JM1BK32F97
Turns out passenger side engine mount was bad again. Chances are the trans mount went out after initial repair of the engine mount and caused it to go bad again. I installed a new engine mount from Mazda and left the after market transmission and rear mount st...
2001 Nissan Maxima GLE 3.0L Cooling Fans VIN: JN1CA31A21
found the ecm to be faulty, but customer declined the repairs. had to ground the realys for the fans to come on continuously fot the ac to function. thanks everybody for the responce.
2008 Nissan Altima S 2.5L throttle body VIN: 1N4AL24E58
David,Vincent,and Darin you guys were right on target. Took it to a dealer and 1 day later smooth sailing. Im now looking into nissan/infinity equipment. Anybody know of a site were I can get a consult 3?
2007 Porsche 911 Carrera S 3.8L Unknown VIN: WP0AB29987
I got new shifter today and already shifting it on the bench is so much easier, installed it and drove the car. The shifter feels great, the old shifter bushings were causing too much friction. It is 2.5 hours to r and r the shifter and it cost is about 900 bu...
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