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Prev Professional Automotive Repair Technical Discussions for September 13, 2013
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Open Help Requests for All Makes and Models
Help Request Answers
1998 BMW Z3 Roadster 2.8L harsh shift VIN: 4USCJ3326W
customer drove vehical in an overheating condition until engine siezed up, installed used engine transfered original harness to used engine, upon start up, had cel w/ p0748 pressure solinoid "a" fault unable to find a cause from installation, not alot of info ...
2003 Buick Rendezvous CX 3.4L egr fuel gauge VIN: 3G5DB03E93
wow what confusion on this simple fuel gage nite mare. customer is complaining that the fuel gauge flucuates. please excuse my spelling. it will flucuate from an 1/4 tank to almost 3/4 tank just driving up and down a small incine. and with a full tank of gas o...
1999 Chevrolet Corvette 5.7L MIL Lamp on, Temp gauge erratic VIN: 1G1YY22G4X
Hello All... this vette came to me with a complaint of erratic Temp gauge and hesitation. Its setting codes P0117 and P1114. I tested the ECT circuits 718 and 410 from sensor to PCM by loading the circuits with a headlight... good and bright no problems with c... Trouble codes: P0117 (ECT sensor circuit low voltage), P1114 (ECT sensor circuit intermittent low voltage)
2002 Chevrolet Trailblazer LS 4.2L Cuts out, Stall, MIL Lamp on VIN: 1GNDT13S72
Hey guys, I'm a little stumped here. This is the boss's trailblazer. It has stored codes for system too rich AND system too lean. I have it idling right now and STFT is -18, LTFT is +11, FT cell is +20. When I increase the rpms up to around 2000 or 3000 the fu... Trouble codes: P0171, P0172 (Bank 1 rich)
2005 Chevrolet Cobalt 2.2L No Start VIN: 1G1AK52F65
Happy friday IATN. I have a probleme child here with no information on where to go. This little chevy Cobalt doesn't want to start. It has no power to the fuel pump. I traced it back to the fuse box. I doesn't get power to the fuel pump fuse. Mitchell says t...
2004 Chrysler Pacifica 3.5L Blower VIN: 2C8GM68424
We have a continuuing problem with this Pacifica. Customer states after driving awhile, blower motor goes down to very slow speed. Its moving but will not blow air. Motor checks good everytime we test it. Powers and grounds are good. Signal is good to and from...
1998 Ford F-150 Lariat 5.4L windows and wipers VIN: 1FTRX17L1W
first off would like to thank anyone for there help. Have a 1998 f150 with intermittent inop wipers and window operation. first I looked at scan data with IDS and only thin that was looking to be a problem was key position and in/out location on scanner. so pu...
1999 Ford Mustang 3.8L No Start VIN: 1FAFP404XX
Ok I have a 99 mustang 3.8 car with a 03 4.6 transplant. The only history I know is that they got bad fuel car died. They tried to jump the fuel pump to empty the tank and lost fuel pressure, odo display and now pats is flashing a code 12. I verified fuel was ...
2000 Ford Mustang GT 4.6L compressor VIN: 1FAFP42X8Y
Scanner shows WOT as soon as compressor starts. Then, compressor stays off and WOT remains on. Substituting another TPS externally, compressor will start when TPS voltage hits 4.6v and WOT will turn off. CCRM is correct part #. Substitute CCRM=same results.
2003 Ford F-150 XLT 4.6L cylinder contribution VIN: 1FTRW07693
This truck showed up customer tried changing spark plugs and boots, he completed two cylinders and wanted us to change the other six, which we did. and informed him the reason the check engine light is on is due to Code PO175 (system to rich Bank 2. He came ba...
2003 Ford Ranger Edge 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTZR45EX3
hello ford friends. have this ranger that was brought to me by one of my commercial customers. he was stumped so i got it. and i haven't had any luck with it yet either. it was purchased at auction so there is no known history other than what we have done. he... Trouble codes: P0175 (Bank 2 rich), P0300 (Random misfire), P0304 (Misfire cyl 4), P0305 (Misfire cyl 5), P0306 (Misfire cyl 6), P0316 (Misfire upon start up)
2004 Ford Ranger Edge 4.0L battery VIN: 1FTZR15E84
Traced draw to the fuse #12 for the subwoofer amp in the smart junction box. The problem is i cannot find the subwoofer or radio amplifiers that this truck is supposed to have. Any ideas on the locations. They are not where alldata or mitchell show. Thanks.
2007 Ford F-550 Super Duty Lariat 6.0L Air Conditioning VIN: 1FDAW57P57
Hello all, we have a 2007 F550 with Manual AC that the ac only works when it wants to. we replaced an evaporator core & components a couple months ago due to the core leaking. Here's the problem, after customer drives truck for an extended period of time (appr...
1989 Jeep Wrangler 2.5L Stall VIN: 2J4FY19E9K
This jeep has a pulse width on an oscilloscope when you crank it, but as soon as it starts the pulse width goes to 0. If you move the gas pedal it comes back, but as soon as the gas pedal becomes stationary it cuts to 0 again. To keep this truck running you ha...
1997 Mercedes-Benz C230 2.3L shift VIN: WDBHA23E4V
Vehicle arrived at shop in limp in mode with codes present for speed sensor failure P0720 and P0715 we replaced the conductor plate and fluid filter and gasket and checked the harness for fluid cleared ecu as needed and road tested vehicle still slams into gea...
2002 Mercedes-Benz S430 4.3L lights,horn,radio, VIN: WDBNG70JX2
Hello, i need some help with a 02 S500 nightmare. Car has multiple issues. The following do not work. Horn,turn signals,high beam head lights,radio,adjustable steering column,interior lights,wipers and washer pump.I'm suspecting the clock spring is bad. Car ha...
2010 Nissan Murano LE 3.5L power steering VIN: JN8AZ1MW2A
Customer complaint is after driving over a two day period steering became tight, verified power steering fluid level and condition,flushed for maintenance, do not have equip to check pressure but have good return flow, on rack found nothing that seems to be bi...
1997 Porsche Boxster 2.5L MIL Lamp on VIN: WP0CA2986V
car has 2 hard codes ,, i cannot find the evap vent valve i can not find any info on location of the vent control valve , removed the right front fender liner there is no valve on the canister just a blank for one / also there is no pressure transducer visib... Trouble codes: P0447, P0453
2003 Saab 9-3 Linear 2.0L head, tail, brake lights VIN: YS3FB49S13
Lighting quits at times. Signals, third brake, high beams and backing lights not affected. Display reads right high beam out when malfunction occurs; reads correctly when lights are working. Is there a bulb integrity sensor or module that might cause this?
2005 Suzuki Forenza LX 2.0L Srs Warning Light VIN: KL5JJ56Z95
I appreciate your help. I am looking for a way to read the airbag codes in a 2005 Suzuki Forenza. I have a repaired vehicle that had light side damage but the SRS light goes on, blinks off and then turns back on solid. I do not know if the light was on before ...
2011 Toyota RAV4 2.5L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 2T3BF4DV6B
About to give up. Customer "heard a loud noise" upon start up. Came in with p0300, p0301,p302,p303 and p304. Cleared codes. 1st drive MIL flashes and engine misses, (excessive fuel/cataylst damaging condition)p0301 and p0171. watched fuel trims in the bay, the... Trouble codes: P0300, P0301, P0302, P0303, P0304, P0171
2002 Volkswagen Jetta TDI 1.9L MIL Lamp on VIN: 3VWSP69M92
I am having a problem trying to retrieve check engine codes on this car,as an ase certified master tech and a vw specialist with 28 years experience on these cars i got puzzled on this one... This car suffered an engine run away [wide open throttle with key of...
2010 Volkswagen Jetta TDI 2.0L MIL Lamp on VIN: 3VWAL7AJ2A
dear fellow techs I have this vw diesel 2.0 cjaa engine with exhaust pressure sensor code PO472/01138 I am trying to identifie sensor . I believe it is what vw call a control line differitial pressure sensor above the cat near top of motor .Just trying to loca... Trouble codes: P0471

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2000 Audi A8 Quattro 4.2L throttle body VIN: WAUZZZ4BZY
All codes would return straight away after clearing,now car has been running good for over 1 week.Thanks all,we were going to send away throttle body for inspection before listing here.Opened up throttle and cleaned contacts. Refitted and all throttle codes ar...
1989 BMW 325i 2.5L gauge VIN: WBAAA130XK
Found that that the two lithium batteries within the back of the cluster were dead and made arrangements to send the cluster to a rebuilder for full rebuild
2003 BMW 745Li 4.4L MIL Lamp on VIN: WBAGN63473
Thank you to all that responded. Most of the replies suggested swapping the connectors. This car went home for the labor day weekend, and has not come back. Will update this post when we get it back. Thanks to all and good luck. Trouble codes: 27B6, 27BE, 27BF, 27C0.
2004 Cadillac SRX 3.6L Starter VIN: 1GYEE63754
Looks like the ECM fixed the no start and the key getting stuck but the engine running with the key removed remains a mystery. It only did it twice after replacing the ignition switch. We tried all day on Monday and it never acted up. So the customer agreed to...
1997 Chevrolet S10 4.3L Abs inop VIN: 1GCCS19X8V
after all information came n i actually followed to the tee,my scanner had codes n it was one of my first ABS to scan found codes n replaced both sensors after doing wiggle test like told.worked out fine.learned that even though u get MPH readin on scanner sti...
2003 Chevrolet Trailblazer LTZ 4.2L compressor VIN: 1GNDS13S23
connected both batt cables together left like that for a good 10 minutes. turned key on without touching AC, let sit for 2 minutes. turned off and restarted and everything is working -thanks guys :)
2010 Chevrolet Silverado 2500 HD LT 6.0L hvac controler VIN: 1GC4KXBG6A
well the fix was to replace the temp actuator, it was skipping the signal and causing the system to go full hot, Thank you for all the replies. David
2006 Chrysler 300 (Car) C 5.7L Front differential VIN: 2C3KK63H46
Would like to THANK ALL who replied to my request for help. Would really like to THANK SKYLER from NEBRASKA!!! The fix was the exhaust hitting the trans crossmember on left turns. Heated and adjusted exhaust and noise is gone. Thanks again!!!
2008 Dodge Grand Caravan SE 3.3L dash lights VIN: 1D8HN44H58
ok guys found the problem thanks for all the replys it was a few broken wires in between the front door had like 5 broke customer just wanted them repaired really need to replace the harness but she didnt have that kind of money again thanks
2004 Ford Focus SE 2.0L Poor Idle Quality, Hesitation, Cuts out, MIL Lamp on VIN: 1FAFP34354
I like to thank all that reply with help. Thank you Alex, I found that PVC tube was broken in past and replaced with a section of heater hose and where is connects under the air cleaner box the hose clamp they had there broken. I double clamp it for now since ... Trouble codes: P2135.
2005 Honda Accord Hybrid 3.0L Brakes VIN: JHMCN36465
Thank you to everyone who replied. Yes it was the check valve in the brake booster hose. The customer confirmed that the check valve solved the problem. Thank you again to everyone.
2003 Jeep Grand Cherokee Overland 4.7L a/c VIN: 1J8GW68J63
Just as everyone said I replaced Expansion Valve and all is good, Pressures are normal and [...] out of vents. Thanks to everyone who replied I have never come across this before and I really thought that if I had a restriction or a problem with the valve ...
2003 Jeep Wrangler Rubicon 4.0L engine VIN: 1J4FA69S53
we checked the condition of the crankshaft and found that all the bearing journals were scored slightly and had a rust colored tarnished appearance and bearing clearance on all rods,mains and end play were at the max spec,the camshaft was not removed for inspe...
2008 Mazda CX-7 Grand Touring 2.3L Excessive Emissions VIN: JM3ER29L98
Well I wish I could better explain why but changing the oil, even though had just 3k miles on it , cleared up the smoke after only one day. Even more interesting, I had a 04 Mazda 6 in w/3.0 l non turbo. Same symptom with smoke and same fix, change the o...
1992 Mercedes-Benz 500SL 5.0L idle fluctuation VIN: WDBFA66EXN
I haven't been able to get back to this car yet as it is my own. Suggestions were mostly to check throttle switch function. Can't remember if I did this. I will repost with a solution as soon as the problem is solved. Thanks to all who responded.
2001 Mercedes-Benz SLK230 Kompressor 2.3L Convertable Top VIN: WDBKK49F41
Wow what a bugger. First of all thanks to all those who responded, I needed some direction and I found the problem thanks to you guys. This was truly a weird one so naturally I got out my wiring diagrams and eliminated everything drawing power. Then I hooked...
2004 Mercury Sable LS Premium 3.0L HVAC system VIN: 1MEFM55S04
Well the culprit in this case has been confirmed as a defective compressor. As was pointed out to us by Terry from Alabama, these jobs are too labor-intensive to try and trim costs with inferior parts. We ended up far in the hole as far as this situation goes!...
1998 Oldsmobile 88 Royale 3.8L Converter VIN: 1G3HN52K8W
Most replies were for valve body defects . Customer does not want to throw any more money at the car.
1998 Subaru Legacy GT 2.5L Fuel temp sensor VIN: 4S3BD6751W
Once I was told the sensor was in the fuel tank it was an easy diagnose. The fuel temp sensor was less than 5 ohms indicating a faulty sensor. The valve I saw that was broken was not related but we replaced anyhow. Thanks for the help guys... I skipped a stay...
2006 Volkswagen Jetta TDI 1.9L No Start, Cuts out VIN: 3VWDT71K66
Thanks for everyones help. I found terminal 15 relay bad. replaced and all is good.This is relay for ignition switch.
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