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Prev Professional Automotive Repair Technical Discussions for April 22, 2013
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2003 BMW 745Li 4.4L Electronic VIN: WBAGN63423
1st problem we are having with this vehicle is that the brake lights are stuck on. they turn off if we unplug abs module. the brake light switch seems to be operating normal. we noticed on scanner data that the brake pressure fluctuates between 0 and 15psi whe...
1996 Cadillac Fleetwood 5.7L low power/vacuum VIN: 1G6DW52P8T
Customer complaint is low power and check engine light on. The fuel pump solved part of the low power problem, but it is still weaker than I would like to see for an LT1, and it is continuing to set lean codes. I also have an evap problem, but I have isolated ... Trouble codes: P0171 (lean bank 1), P0174 (lean bank 2), P1171 (lean during acceleration)
1995 Chevrolet Camaro 3.8L neutral safety
this car fails a provincial/state safety inspection because it will start in all gears. I see from the wiring diagram there is a theft relay in series with the neutral safety switch. there is no power at the yellow wire at the switch I assume its been bypassed...
2001 Chevrolet Silverado 3500 6.6L Engine VIN: 1GCJK33161
Hi everyone, this is my first experience with a mechanical issue on one of these Duramax engines and looking to be pointed in right direction, Customer was driving in town and all the sudden engine died and will not restart, he had looked at by dealer in that ...
2004 Chevrolet Colorado LS 3.5L ignition VIN: 1GCCS13684
this car was driving and all of sudden stop, and anti-theft security lite is on, now starting the car again, it wont, i have tried to relearn the key by rotating the key in manual learn mode, but wont start, the car crank alright, all lights on the instrument ...
2006 Chevrolet Trailblazer LT 5.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNES13M56
Customer purchased vehicle couple months ago, ran fine until 2 weeks ago. Started running very rough returned it to person who installed engine. He had it for several weeks and said he did not know what was wrong with it. So we have it, clear codes and while c... Trouble codes: P0016 (p0341-), P0341
2007 Chevrolet Aveo LS 1.6L Stall VIN: KL1TD56647
customer came in said his car would just stall while driving down highway and wouldnt go over like 20 miles a hour he said even when he was driving like 60 it would be like cut car off cause it wouldnt go it doesnt die just wouldnt go ive drove it and it hasnt... Trouble codes: P2106 (throttle control systemperformance), P2110 (tac systemforce limted speed), P2101 (motor circut and performance), P0106 (map out of range), P0420 (cat effncany low bank 1)
2007 Chevrolet Uplander LS 3.9L Cooling Fan VIN: 1GNDV23WX7
Greetings to all van came in foe overheating found cooling fan not coming on able to activate through scan tool on all speeds.ecm controls ground circuit at relay should come on at low speed at 208 degrees and at high at 220 degrees ran vehicle and noticed tem...
2008 Chevrolet Suburban 1500 LTZ 5.3L Engine VIN: 3GNFK16388
The customer brought the suburban in for a no start and a chirping noise. The battery is bad for starters. The noise is at idle and gets faster with engine rpms. I can hear it the best on the passenger side rear on the engine block. we removed the belts and th...
2001 Chrysler 300M 3.5L No Start VIN: 2C3HE66G21
This 300M die when the customer is driving on the high way. It will try to start and die. I already replace the cam and crank sensor, no fix. Compression is about 150 PSI on all cylinder. According to the scan tool, none of the Monitor is ready. But, there is ... Trouble codes: P0605 (Internal control module ROM read only memory error)
2003 Chrysler PT Cruiser Touring 2.4L Misfire, MIL Lamp on VIN: 3C8FY58B13
would like a second opinion on this one, found a burnt number one plug wire plugs where old also, it was misfiring on number 1 and 4, replaced plugs wires and the coil, still had miss on 1 and 4 and return of my p0351 code, I disconnected cam sensor and after ... Trouble codes: P0351, P2302
1998 Dodge Grand Caravan SE 3.3L No Start, Stall VIN: 1B4GP44G0W
This some times a start stall, other times a no crank, and some times as driving the ipc turns off( nothing on ipc is reading anything.). Well at thanksgiving a trade was made. I now own a piece of crap. In that time it has not started 5 times. Most of the tim...
2001 Dodge Ram 1500 Van 5.2L stalling out VIN: 2B6HB11Y41
I am a small shop, since I am semi retired and disabled now. But I have a question for the Dodge techs out there, I did read up about this, but something is not clicking with me ? Did all of the above after I got this van, and then about a week later it would ...
2002 Dodge Durango Sport 4.7L Power Windows VIN: 1B4HS38N92
Customer thought it had 3 bad switches,which i thought was strage right away!anyway,from drivers master switch i can operate the other 3 windows with no problem.but if i try to operate the other windows from those switches,there is no movement up or down.easy ...
2002 Dodge Ram 1500 Truck ST 4.7L compression VIN: 1D7HA16N32
Hello,2002 dodge ram 1500 4.7 misfire,rough idle,back fire.thanks in advance have this truck with multiple mis and rough idle .tested found number 2 cylinder 0 compression.removed valave cover rocker arm has fallen out,for intake valave no visible damage.custo...
2004 Dodge Ram 1500 Truck ST 4.7L Head gaskets VIN: 1D7HA16N64
Hello guys, thanks for taking time out read this. Truck has coolant leaking into #3 cylinder. Due to local demographics, I have never had the heads off of one of these 4.7's. Customer wants vehicle fixed right, and I only want to do it once. What are the best ...
1999 Ford F-250 Super Duty Lariat 5.4L Misfire VIN: 1FTNF21L4X
This truck came to us with a trans issue complaint by customer but when test drove it did have a trans issue that it had a delayed shift and it would stall the engine.I also noticed it had a miss and customer felt that was also a trans issue. At this point the...
2000 Ford Escort ZX2 2.0L Mechanical VIN: 3FAKP1136Y
This car came in running rough, and the concern of it not shifting properly and at times pushing fluid back out the dipstick tube. According to the customer, the transmission has been rebuilt twice, and they no longer wish for the transmission shop to work on ...
2002 Ford Focus LX 2.0L Excessive Emissions, Misfire VIN: 1FAFP33P02
Greetings ladies and gentlemen: Customer brought their vehicle in with concerns of rough idle as well as check engine light coming on intermittantly. Verified both concerns as well as flashing check engine light with extended idle. Seems worse when engine is... Trouble codes: P0171, P0301, P0302
2004 Ford Ranger Edge 3.0L brakes VIN: 1FTYR10U04
this truck has been to the ford two times to be bleed and two times by us after two weeks comes back with low pedle after they breed fine for two weeks then get in truck low pedle need some help
2004 Ford F-150 STX 4.6L No throttle VIN: 1FTRF14W54
No throttle response Trouble codes: P2111 (Throttle stuck open), P2104 (Forces idle)
2006 Ford F-150 XLT 5.4L Poor Idle Quality, Cuts out, Stall VIN: 1FTPW14VX6
I have chased this problem and need help. It doesn't do it all the time but when does it is when at idle. Acts like it is getting too much fuel when you give it gas. Trouble codes: P0345
2007 Ford Explorer Eddie Bauer 4.0L Excessive Emissions VIN: 1FMEU74E67
Clear codes and returns with P0442. Smoke tested system after commanding vent closed. Flow meter goes to zero and no leaks found. Some thing must leak when car is driven possably road vibration. Filler neck in good shape,no cracks or rust. I am missing somethi... Trouble codes: P0442
2008 Ford Focus S 2.0L Poor Idle Quality, MIL Lamp on VIN: 1FAHP34N38
I have one here that is really making me scratch my head. I hope someone can help me out. Customer came in complaining of no power with engine light on. P0171 was the code. Checked and long term was maxed out. Found dirty MAF and replaced. Car runs great, long... Trouble codes: P0171 (Bank 1 Lean)
1985 GMC Caballero Amarillo 5.0L MIL Lamp on VIN: 3GTCW80HXF
Afetr the repairs and install, with putting some time into restoring the car, We ried to repair the A/C idle relay circuit with installing a after market raly and harness, Had the car running with checking feedback and interfacing the ECM. No problems then hoo...
1999 Hyundai Sonata GLS 2.5L Misfire, long crank cold VIN: KMHWF25V6X
This vehicle is first time here. The vehicle has a long crank prior to starting. At idle, cylinder #6 will misfire and bank two will run extremely rich. We swapped out all ignition and fuel with cylinders that fire with same result. Checked compression on bank...
2000 Jaguar S-Type 4.0L Misfire VIN: SAJDA01D5Y
Hey guys I need some help. I have this Jag that keeps getting WATER in the spark plug holes and causing a misfire. This appears to only happen after a rain or going through a car wash. The water is getting into multiple cylinders without any set pattern. All o... Trouble codes: P0304 (p0308-), P0308 (p0305-), P0305 (p0301-), P0301
2000 Jaguar Vanden Plas 4.0L transmission VIN: SAJDA24C9Y
This big Jag has an intermittent problem(s). After driving 15-20 minutes, we get only about 40% throttle response. Shortly, REDUCED ENGINE PERFORMANCE comes on the message board. Then transmission bumps into limp mode. These symptoms do not necessarily occur i...
2006 Jeep Grand Cherokee Laredo 3.7L Radio VIN: 1J4GR48K76
Basic repair running me in circles. Radio inoperative, no power or display to unit. No trouble lights or codes present. Test all fuses, powers and grounds. Front under hood fuse block has power to block and both sides of all fuses and relays. No power coming o...
2011 Kia Sorento LX 2.4L Noise VIN: 5XYKT4A13B
This fine Kia came in with the customer complaining of loud noise when turning sharply. I checked the car and could not find anything visually. When I drive it in a circle with the wheel turnd all the way to the left about 1/3 of the way around the circle thro...
2006 Lexus RX330 3.3L Poor Idle Quality, MIL Lamp on VIN: 2T2HA31U16
This car came in with customer stating the check engine light came on after driven over a curb with left rear wheel. See no damage, codes po 174 lean bank 2 and po 302 # 2 cyl misfire. PLugs and #2 coil were new, still have same issue , no change. Found long t... Trouble codes: P0174, P00, 302 (miss fire 2)
2006 Lincoln Mark LT 5.4L Steering VIN: 5LTPW18586
Vehicle has very heavy steering especially at slow speeds, it is consistantly heavy & not jerky. On the lift with wheels hanging it is still heavy. Disconnected outer tie rod ends still heavy. No noise from power steering pump, fluid is full & very clean. No...
1999 Mercedes-Benz E300 3.0L Injector pump. VIN: WDBJF25H8X
Misc fluid leaks already resolved, last concern is a small leak from the injector pump. Leak is coming from a rectangular metal plate visible from underneath. This plate is affixed by six bolts. My question is two-fold, 1-can this plate be safely removed and r...
2004 Mercedes-Benz S430 4.3L Poor Idle Quality, Misfire VIN: WDBNG70JX4
This vehicle came in with a rough idle, it has never had a tune up so we replaced the plugs and wires with oe parts. We also smoked the evap system for leaks and found none. The air filter housing was packed with sand so we cleaned it out and replaced both fil... Trouble codes: P0500 (speed sensor), P0456 (purge control minor evap leak), P0101 (maf sensor signal and voltage)
2004 Mercedes-Benz E500 5.0L ride control, ic cluster, no commuication VIN: WDBUF70J44
hello MB techs, I have a E500 that has a few issues i need assistance with. 1st the vehicle came in with rear suspension sagging, I do a full scan on all euros with our scanner, I found that i could not communicate with the suspension module. I also noticed th...
2007 Saab 9-3 Aero 2.8L MIL Lamp on VIN: YS3FH71U27
This is our first time on a 2.8 V6 with what appears to be a mechanical problem. It would appear that the code would be set by a timing chain problem. Has anyone seen this on an engine with 50K on it. In trying to decide how to work up estimates the labor guid... Trouble codes: P0016 (Crankshaft-Camshaft Correlation), P0300 (Random Missfire), P0301 (Missfire Cyl 1), P0303 (Missfire Cyl 3), P0305 (Missfire Cyl 5)
1986 Toyota MR2 GT 1.6L Compressor VIN: JT2AW15C4G
Does anyone know how to remove the compressor from a supercharged MR2. We cannot find any specific reference to R&R the compressor.
2005 Toyota Corolla CE 1.8L Evap VIN: 2T1BR32E35
orignal problem Had code P2420,p043e,p043f,p0441,p2401,p2402,& p2419 I performed a smoke test, I checked the fuses, I checked the connectors, I replaced the vapor canister with dealer item. the customer brought my nightmare back today. After 40 miles it the li...
2001 Volkswagen Passat GLX 4 Motion 2.8L climate control head and compressor VIN: WVWTH63B71
Hello Techs, This vehicle came to the shop with compressor not engaging. The control head would flash 15 sec and the only code was 01044 (control Module Incorrectly Coded). There were some segments missing on the display and the control only showed in Celcius....
2003 Volkswagen Passat GL 1.8L Stall, Misfire VIN: WVWMD63BX3
Morning, Passat will start and run for 3 seconds and stall unless i keep rpms above 3000. sets misfire codes and map codes. Tried alternate air charge sensor no help. Smoked intake system no leaks found. Tried different key no help. Reset and cleaned tbody no ... Trouble codes: 106 (map implausible signal), 300 (random misfire), 301 (cyl 1 misfire), 302 (cyl 2 misfire), 303 (cyl 3 misfire), 304 (cyl 4 misfire)
2003 Volkswagen Passat W8 4.0L Low Beam VIN: WVWUK63B13
Hi fellow techs: I have this Passat here that is in good shape that apears has no Low Beams in the Headlights On position. In the DTR position the HID LOw Beams are on but dim. Just like they should be? Switch on the Headlight Switch with the Key on and engine...
2004 Volkswagen Touareg V8 4.2L Warning Chime VIN: WVGCM77L54
This Touareg is missing the warning chime for the Following: Keys in the ignition, Headlamps are left on, Turn signal clicker. Using the Ross Tech, I have activated the warning chime and get no sound. According to Volkswagen the Instrument cluster has to b...
1996 Volvo 850 2.4L Monitors VIN: YV1LS5547T
After replacing both oxygen sensors vehicle has been driven for over 100 miles and monitor dont ge ready...any help please...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2003 Acura TL 3.2L Vibration VIN: 19UUA56673
Thanks for all the help, I replaced both axles and the low speed vibration is gone but it still has a vibration at higher speeds the rims are bent and they will be sent out to be fixed at a later date when he can leave the car for a few days.
2002 Audi A4 Quattro 3.0L wheel speed sensor VIN: WAULT68E62
after reading the posts and still not seeing a sensor problem, i removed the abs unit and sent it out for repair. it was sent back and reinstalled in the vehicle. the light has not come back on and all seems normal.thank you for all your replys and the answer.
2010 Audi A4 Quattro Avant 2.0L engine VIN: WAU4FAFL1A
So William was spot on. It took me a while to tear down the engine since I had to order special tools that were out of stock. Turned out the roller bearing on both the #4 rockers were bad. One bearing was totally destroyed, they other didn't move smoothly. ...
1990 Chevrolet Corvette 5.7L Poor Idle Quality, Surge VIN: 1G1YY3384L
Thanks for all the help, Replaced the Intake gasket and started the engine, it ran perfect. I went for an extended test drive and everything was good, scan data was all in normal ranges, including fuel trims(block learn and integrator). After the vehicle sat...
1998 Chevrolet K1500 Suburban LS 5.7L Torsion Bars VIN: 1GNFK16R1W
Thanks to all of you who responded, I am amazed by the number of replies! Several people said that I could use a large c-clamp or a ball joint press to compress the adjusters on the torsion bars but the majority said that I wouldn't need to remove the torsion ...
2002 Chevrolet Impala 3.4L power steering rack VIN: 2G1WF52E12
Hi Everyone, Well, after the third power steering pump it seems to have fixed it. We wanted an oem part at first but the pump was 320.00 at the local dealer. Just stupid. Found a rebuilt ac delco. It has not come back.
2008 Chevrolet Silverado 1500 LT 5.3L No Start
Well Thanks for the replies. I inspected the flow control module and it looked okay, so I was able to remove driveshaft and get to the tank and disconnect electrical. Tested the power and ground circuits and they tested good. So them I removed pump, to my surp... Trouble codes: P069E, P0231, P0446, P1174, P0573.
2000 Chrysler 300M 3.5L Cannot fill tank VIN: 2C3HE66G6Y
2004 Dodge Ram 3500 Truck ST 5.9L Surge VIN: 3D7LU38C34
We have yet to see this truck back, the most promising info is that an overfuel condition on #5 could cause a contribution problem on #2 so we will look into that and update.
1993 Ferrari 348 GTS 3.4L timing belt VIN: ZFFRG36A2P
Many thanks to all who responded! The feedback was mixed but more people chiming in on the side of biting the bullet and just doing it for peace of mind. Robb
1967 Ford Bronco 4.7L Fuel Guage VIN: U15NLA5730
Thanks everyone for your help since I usually don't work on these older vehicles. After testing the dash unit like everyone told me it was pulsing voltage like you said it should. I ended up dropping the tank after a lot of broken bolts and drilling. I found t...
1995 Ford F-350 Eddie Bauer 7.3L No Start, Stall VIN: 1FTJW35F8S
Ok here we go, First I want to say thank you to all who replied, I am normally the one that other shops come to, to help diag diesel issues, this time I guess was my turn. This is [...] but I think important to let you know how I came about determining the iss...
1999 Ford Mustang 3.8L No Start, Poor Idle Quality VIN: 1FAFP4048X
Thank you all for you help. Ended up replacing the pcm and it is fixed. What a wierd one. It is always wonderful to be able to receive so much help from this site. Thanks again.
2002 Ford Mustang 3.8L No Start VIN: 1FAFP40472
It turns out that some Fords require a parameter reset if the PCM is replaced. To my knowledge only an OE Ford scanner is capable of doing this.
2006 Ford F-150 XLT 4.6L Poor Idle Quality, Misfire VIN: 1FTRF12W16
Never found a fix, i even went ahead and changed the front o2 sensors and stress tested all the coils, and even replaced a few with oe. i spoke with a couple different ford master techs and they said they had seen the problem but never were able to fix it. one...
2003 GMC W3500 Forward W3S042 5.7L hydraulic VIN: 4KDB4B1R53
Thanks for the help. The customer sourced a used controller, installed, bled and now have an acceptable brake pedal height.
2005 GMC Envoy SLE 4.2L Powertrain VIN: 1GKDT13S55
Hi There, It was the Electric Cooling Fan with an intermittent short in it that would drop the 5 volt reference at times. Thanks for all the help from everyone. Mike
2005 Honda Civic Hybrid 1.3L Immobilizer system VIN: JHMES96655
This vehicle is fixed thanks to all of the help replies that I received. The problem with the immobilizer system indicator light flashing was because the ECM was not getting any power. I found the relay that powers up the ECM was not working. I replaced the r...
1993 Land Rover Range Rover County 3.9L No Start VIN: SALHV1241P
Thanks to all 6 of you. Jim from New York was the closest and set me on the right path. The 2 relays under the passenger seat were not receiving the grounds to close the relays. So no injector pulse and no fuel pump operation. I checked the ECU plug to see if ...
1999 Lincoln Town Car Cartier 4.6L Battery VIN: 1LNHM83W1X
Alex is correct. It does take awhile for the module to go to sleep. It have been over 4 day now and I haven't heard customer complain about his battery is dead. I call this a fix. Thank
2004 Lincoln Navigator 5.4L trac light VIN: 5LMFU28R04
sry thought i had closed this out seems like my scaner wouldnt reset the light tok it to ford and had it reset everything is good thanks
2001 Mercedes-Benz E320 3.2L Hesitation, Stall VIN: WDBJF65J81
this is a family members car n sisnce i was visitin i was put to the test.after repairin wirin on lights[bare wires everywhere] for a mercedes benz it was a surprise to me as these cars r supposed to be well designed.but by no means i laid that to the side n f...
2005 Mercedes-Benz E500 5.0L Control panel VIN: WDBUF70J15
Thank you for your help, we did get a friend to use his Launch to clear codes and A/C performed great.
1996 Nissan Pathfinder LE 3.3L Cuts out, Stall VIN: JN8AR05Y0T
Unfortunately,the company I work for is 10 years and $50,000 behind in technology.I have no scope,so I took a chance.Popped a distributor in and ran it for 4 hours with no issue.Thanks for all the help.And 'see' you all again. Trouble codes: P0100 (Maf sensor problem), P0304 (Cyl 4 misfire), P0300 (Multiple cyl misfire), P????.
2005 Other GM rodeo 3.0L Excessive Emissions, Hesitation, Surge, MIL Lamp on, blows white smoke VIN: MPATFS77J5
Thanks to all technicians that replied all good suggestions.After draining and cleaning the tank and replacing filters a second time i rechecked the banjo fitting to the pump.The filter screen had a bit of rubbish in there.I cleaned the screen filter and blew ... Trouble codes: P0216.
2003 Suzuki Aerio S 2.0L Poor Fuel Economy VIN: JS2RA41S93
2008 Volkswagen Jetta SEL 2.5L MIL Lamp on VIN: 3VWRM71K08
Thanks everyone for the input on this Jetta. We actually had an intake gasket leaking which was causing the Front 02 sensor voltage too high . So when the air pump was turning on and pumping the extra air into the engine the voltage was not going any higher o... Trouble codes: P0411 (Secondary airflow incorrect).
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