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Prev Professional Automotive Repair Technical Discussions for February 21, 2010
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Open Help Requests for All Makes and Models
Help Request Answers
2003 Acura MDX 3.5L Poor Idle Quality, Cuts out VIN: 2HNYD18743
It sounded like the timing marks were miss-aligned but have been rechecked 4 times by 2 different techs according to Mitchell and ALLData. We have performed a ecm reset and crank relearn using a Honda PGM-FI tester as well as a Launch. PID data indicates A/F s... Trouble codes: P2197 (a/f sensor signal stuck lean bank 2 sensor1), 7701, 4101, 4102
1997 BMW 318ti 1.9L lock cylinder VIN: WBACG83240
Customer came into shop Saturday. When went to leave key would turn and car would start, but could not turn steering wheel. I have removed the steering wheel lock assembly and have read all of the posts, but can not get key lock tumbler assembly to come out. A...
2004 Buick LeSabre Limited 3.8L Surge, Cuts out, MIL Lamp on VIN: 1G4HP52K94
I met the owner of this vehicle this afternoon to diagnose a SES light being on. Checked and found a po171.Upon start-up the engine would sputter and clear up.I checked for misfire readings and did see different cylinders misfire and then return to normal. I e... Trouble codes: P0171
2008 Cadillac CTS 3.6L Pedestrian Impact Detection Module VIN: 1G6DR57V68
Hello, Today the car came in with a dtc B1000 in the Pedestrian Impact Detection Module. I already replaced this module for two times. The first time it had dtc B1000 set as current, so I did the diagnostic check, and that told me to replace the module. So wh...
1999 Chevrolet Malibu 3.1L Poor Idle Quality
misfire #3 cylinder
1999 Chevrolet Express 3500 5.7L prndl VIN: 1GBJG31R8X
Hi Folks. I checked the archives and did't find anything with the same symptoms. PRNDL reads correctly on scan tool. Instrument panel PRNDL shows nothing when in park, neutral, drive and 2. When you put it in reverse, 3rd or first, only the 3 illuminates. I kn...
2004 Ford F-150 FX4 5.4L Lighting VIN: 1FTPW14564
Thanks in advance for help on this one..I am lacking information on the "u2023 vehicle communication network fault" code that is in this truck. The radio stays on when doors opened also interior lights do not come on when door is opened. Also the 4x4 is not en...
1996 Jeep Grand Cherokee Laredo 4.0L No Start VIN: 1J4GZ58SXT
as i said earlier this is my jeep so it is (was) my daily driver it started as a stall codition just every now and then and on monday stalled and would not start had it towed home (yep you guessed it at the shop it started up now that it want ive checked fuel ...
2006 Jeep Liberty Sport 3.7L air bag light VIN: 1J4GL58K36
jeep parked in garage overnight and key left on, after doing oil chg , and jumping with jump box vehicle started and air bag light and esp light stay on checked with snap on scanner no codes. tried unhooking battery and touching cables no help.
1997 Volvo 960 2.9L 3-4th shift VIN: YV1KS9608T
This is a well-maintained vehicle. Owner states that it does not seem to shift into 4th (Overdrive) easily. Test drive is inconclusive. Seems to shift at about 2800 RPM @ 40mph on a level surface. Fluid is clean. No codes present. Questions are... 1. What is t...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2002 Acura MDX 3.5L Misfire, MIL Lamp on VIN: 2HNYD18832
the intermitent miss has become a constant miss. The misfire will start as a p1399 and then as the vehicle is driven become a specific cylinder. All the plugs are denso factory plugs. the coils test good both cold and hot. The valves were adjusted on a cold en... Trouble codes: P1399.
1995 Buick Century Special 2.2L Misfire VIN: 1G4AG5544S
Those of you that suggested a weak/bad coil was correct. It just stumped me because it originally didn't have spark at no. 3 then when I replaced the plug wire at that cylinder, I had spark. I ended up replacing the coil, and it ran like it should. I road t...
1999 Chevrolet Tahoe LS 5.7L MIL Lamp on VIN: 3GNEK18RXG
Well I decided to fix the catalyst correctly by installing new universal style catalytic convertors. As a tech I feel as many of you all do that vehicles so be repaired correctly even if it is your own. As far as the cooling fan goes I installed a universal el... Trouble codes: P0420 (catalyst).
2000 Chevrolet C3500 6.5L No Start VIN: 1GBKC34F6Y
Injection pump was the culprit. All the replacement items on this pump GM wont do , they just do the warrantied work and replace the pump Trouble codes: 1216 (660 -), 660.
2003 Chevrolet Impala LS 3.8L compression VIN: 2G1WF52E53
Just to start, Thanks to everyone for their help in this matter. And yes it was a 3.4L. I don't know why it came up with a 3.8 when I inputed the VIN. Just about everyone hit it on the head. The lifters were "pumped up" causing the valves on at least three of...
2004 Chevrolet Cavalier 2.2L power steering pump
I replaced pump again and when flushig system got a small amount of water out out.These were gm pumps and there is no pulley to press on or off.end of cam was clear& pressure ok.I think water was freezing causing problem.Reccomended rack be replaced due to wa...
2001 Dodge Caravan Sport 3.3L Monitors won't run VIN: 2B8GP44391
Unfortunately the customer hasn't returned yet to have the fuel sender replaced. The general consensus is that the Evap, Cat, & Egr monitors won't run unless the fuel level is between 15% and 85%. I'm not sure why the O2 monitor didn't run, it may be because t...
2001 Dodge Intrepid SE 2.7L No Start VIN: 2B3HD46RX1
It was the wrong flywheel. When the ecm doesn't get the right sequence of pulsed from the reluctor holes in the flywheel, it will not fire the ignition coils. I had 2001 Intrepid with a 2003 flywheel. The replies all pointed to this change. Thanks to everyo...
2002 Ford F-150 Lariat 4.6L missing parts VIN: 1FTRW07612
Thanks for all your replies. I took a look at the replies and reviewed the component diagrams for vacuum hookups for the 4 wheel drive front axle and most of you were correct -- that's exactly what the solenoids and vacuum lines are for BUT this is a 2 WHEEL D...
1995 GMC G2500 Vandura 5.7L Brake shift interlock solenoid VIN: 1GDEG25K8S
Thanks for the replies to my request.I guess some of you are as frustrated with these cheap things as i am.It turns out that the problem was the spring in the switch that the rod has to push was just too strong. The rod would actually slide the switch before i...
1999 GMC K1500 Suburban 5.7L MIL Lamp on VIN: 1GKFK16ROX
many thanks to all who responded and those that pointed me back to the fuel pressure. i performed tests again, the waveform and volume were exelent but pressure was about 10 psi low. i wound up removing the upper intake, replacing the fuel pressure regulator w... Trouble codes: P0171, P0174.
2002 Hyundai Elantra GT 2.0L low power VIN: KMHDN55D32
thanks for the help, yes the cat was clogged. removing the o2 sensor did verify the problem. a replacement was installed thanks again Trouble codes: P1166.
1993 Toyota Camry 2.2L Hesitation, Cuts out, Stall VIN: JT2AC52L7T
I fixed this vehicle by replacing the distributor, as many of you great techs suggested. 24 replies I found that impressive, thanks everyone!
2001 Toyota 4Runner 3.4L high idle VIN: JT3HN86R91
First of all I want to thank Tom, Mark, Seth and Reno for sharing their information with me. I removed the IAC and found that it was stuck open. I replaced it with a new one and now vehicle idles correctly. Thanks again. IATN is truly a great resourse.
2001 Volkswagen Golf GTI GLS 1.8L MIL Lamp on VIN: WVWDC21J11
Hello friends I apologize for taking too long to close this help request, but customer was out of town and we got the vehicle back for inspection after his trip.Well most if not all of the people that were kind enough to provide their time and knowledge to hel... Trouble codes: P1136 (Bank 1 mixture adaptation add. system too lean).
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