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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 7, 2007
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Open Help Requests for All Makes and Models
Help Request Answers
1995 BMW 540i 4.0L Poor Idle Quality VIN: WBAHE6324S
Vehicle has an engine miss at idle only. we can here what sounds like a vacuum leak under the plastic intake plenum but cant verify it. We looked for TSB's on the problem but none were found. I guess what we wanted to know is if these are known for intake gask...
1995 Cadillac DeVille 4.9L ebtcm VIN: 1G6KD52B3S
hello to my fellow techs that keep this great nation rolling! this 95 caddy is trying to get one over me, my customer brought her car in saying that the ABS& TRACION DISABLED lights are coming on. if she restarts the car they will reset untill a few minutes of...
1995 Cadillac DeVille 4.9L abs VIN: 1G6KD52B8S
Id like to start by thanking everyone who takes the time to read this. This car has an intermittant brake code TO61-BPM circuit problem. (This car origanally came in with multiple engine, abs, suspension, and instrument panel codes and this is the last one, I ...
1995 Chevrolet Caprice Classic 5.7L Poor Idle Quality, Cuts out, Misfire
this is one my friends sons car they have been messing with it thats why the new plugs and wires the sticker under hood says 4.3l but it is a 5.7 TPI and i cannot use my SOLUS scanner unless there is way to cercomvent the VIN because by the is has a 4.3l anywa...
1996 Chevrolet Lumina 3.1L Hesitation, Cuts out, Poor Fuel Economy VIN: 2G1WL52M90
hi this is my own vehicle when accelerating timing retards about 20 degrees and vehicle looses all power. have snap-on scanner to watch sensor operation.have replaced knock sensor,map sensor,ignition module no codes present.
1997 Chevrolet Astro 4.3L No Start VIN: 1GTDM19W4V
this van is a no start no communication to snap on scanner. im wandering if any one can tell me which wires to check to see if the computer is operating.all other no comm. problems i've had were either a fuse or a wire but these are all ok.
2000 Chevrolet Silverado 1500 5.3L Radio Um6
Removed head unit check power and grounds, all good I installed a similar unit with same #number, same problem. back probe and install a known speaker into rt/lt side speakers no sound. Radio turns on will tune into station and set the ST light but no sound su...
2000 Chevrolet S10 2.2L No Start VIN: 1GCCS1940Y
Good evening Techs, Have a no-start with no codes. Have no ign spark, no injector pulse and no cranking rpm on red brick scanner. Replaced crank sensor, ignition module, PCM and still nothing. Mitchell says attach test light to batt positive and tap on crank c...
2004 Chevrolet Trailblazer LS 4.2L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire, pending codes only VIN: 1GNDS13S84
Came back 2 days later customer said it was running horribly. Pulled back in no mil, pending codes p0300 and p0014 misfire and cam position performance. Engine was running ok.Ran a few tests cam sensor quit rpm signal. Installed new cam sensor started engine r... Trouble codes: P0128, P0130, P0133, P0300, P0014
2005 Dodge Ram 2500 Laramie 5.9L Cuts out VIN: 3D7KS28C95
Truck runs fine up to 2500rpm then cuts out consistent no matter what gear. Will shift have power to 2500rpm, cut out. Fuel filter changed, basics looked at, no codes. thanks
1994 Ford Ranger STX 3.0L speed control VIN: 1FTCR15U8R
Speed control system died on my daughters ranch truck. I have tested the entire system many times. The servo revs the engine when I perform the jump test, the switches in the steering wheel ohm out perfectly by them selves or at the amplifier connector,the spe...
1995 Ford Ranger Splash 2.3L Poor Fuel Economy, MIL Lamp on VIN: 1FTCR10A8S
MIL is on, p0172 system too rich in in memory I just finish the the and I did not have too much time to deal with this one but I did the tests shown and I also notice that the LTFT B1 & B2 always stay at -18% all the time even after reseting the MIL, is this n... Trouble codes: P0172 (system too rich bank 1)
1995 Ford F-350 Special 7.3L No Start, Stall, LOSS OF POWER VIN: 1FTJX35F05
Hello to all,Could everyone PLEASE READ POST TWICE BEFORE RESPONDING.. I have a power stroke that has a internal oil leak in RH head, came in no start, po0344, po1211, dead battery, installed new ford crank sensor, cleared codes. no start ICP reading 4psi, te... Trouble codes: 1211 (icp than expected)
1998 Ford F-250 5.4L no power at higher r VIN: IFTNF2IF2X
Don't know why I couldn't enter diesel where I should have ! Fellows , this truck starts & runs , but has no real throttle response above say 1300 rpm's . It will pull ok at lower rpm but just acts like no throttle signal . On a scanner that part seemed fine -...
1999 Ford F-150 Lariat 4.6L Timing chain guide VIN: 1FTRX17W0X
This truck came in with lots of terrible noise in the front of the engine. We took the front off and there is lots of slack in the timing chains. We are replacing everything. When my tech went to install the chain guides, he seems to have 2 holes which should ...
2003 Ford F-350 Super Duty XL 6.0L engine VIN: 1FDWF36P34
Hello, I am new to this forum so i apologize for some of the novice mistakes. I have recently taken over running a shop in Korea, and there has been an F-350 that is used to pull aircraft/equipment around the flightline. (Air Force) The problem is a very rough...
2003 Ford Mustang 3.8L Poor Idle Quality VIN: MUSTANG
my brother who lives in a different state, has a mustang that doesn't idle when the engine is cold. When the vehicle warms up it idles fine. No check engine lite, no scanner availible. I have no diag. info availible. He replaced the fuel filter, clean the thro...
2003 Honda Element EX 2.4L transmission/differential VIN: 5J6YH28533
Honda guys out there This is my brother in laws vehicle and has been to the dealer three times,each time was returned with could not duplicate condition on repair order. Even after twice riding with tech and showing them this. On a real tight parking situation...
2000 Jeep Cherokee Limited 4.0L evaporator VIN: 1J4FF68S2Y
We replaced a leaking evaporator and accumulator with factory parts. Best outlet temp in 80 degree weather is 50. The customer is unhappy with it and we can't seem to find a fix. We changed the orfice tube with the liquid line and even pulled the box back out ...
2001 Jeep Grand Cherokee Limited 4.7L Stall VIN: 1J4GW58N3Y
Ok guys, This jeep's computer had an injector driver issue. So I had a used one and I put it in it to see if it will fix it. After putting it in, the jeep will only start then die. So I quickly notice the Key light. After hooking my scanner up I realized I cou... Trouble codes: P1685 (invalid key message recieved from skim)
2002 Jeep Liberty Sport 3.7L Unknown VIN: 1J4GK48K92
Vehicle came in with no start. After inspection found cams broken. Got a junkyard engine complete. Installed engine. Vehicle runs like it is out of time, sluggish, lack of power, Cranks like the timing is off also. Swapped the cam and crank sensors off the ori...
1997 Mazda 626 DX 2.0L Poor Idle Quality, Hesitation, Surge VIN: 1WHG392H3Y
hi all a friend has this vehicle and it keeps throwing this cat code and a idle it's been to a couple other shops with no result like they are scared to work on it so they asked me code car is slightly sluggish on cruise and lacks any crisp accelleration my in... Trouble codes: P1506, P1042
2002 Mercedes-Benz S600 5.8L p/s abc pump VIN: WDB2201781
Hi mercedes tech's , this car(M137) have a noise problem.when engine rpm between idle to 1700 can hear noise in car ,like w211 m112 engine belt idle pully bearing bed or a/c compressor belt pully bearing bed noise .I was check belt idle pully,alternator,water ...
1996 Mercury Sable GS 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1MELM5OU5T
Hey guys i have this piece of crap sable it sets a code misfire #1 i have replaced plugs wires and coil pack also cleaned fuel injectors.Does anybody have an idea what to check next please help
2002 Pontiac Firebird 3.8L engine
hey GM techs, heeeeeelp, neighbors car came whit pushrod noise, replace prds from dealer, noise' is not going, I hear the noise in the intake, not in the rocker arm. "please any help amigos" thanks advance
1991 Volvo 940 T 2.3L MIL Lamp on VIN: YV1JA8748M
This is my second help request for this vehicle. We thought we had it fixed so I closed the first one. This vehicle has a recurring CEL lamp with code 131 and 312 set in fuel ecu. Code can take several days of driving to set. We've performed all tests accord... Trouble codes: 312 (Knock signal missing), 131 (Ignition RPM signal missing)

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2001 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HE54K61
The fix to the car was a bad lifter and maybe the intake leaking but I really couldn't tell by looking at the gasket if it was leaking or not. But the car runs fine now. Thanks guys Trouble codes: P0300.
2000 Chevrolet Cavalier 2.2L starter
after two new switches in desperation i replaced the shift cable.the car started on the first try.thinking the orginal switch was ok i reinstalled it car would not start.put new switch back in started but no backup lights.to get backup lights to work i had to ...
1992 Ford Mustang LX 2.3L 3-4 shift VIN: 1FACP41M9N
Well I didnt fix this one the tranny shop did. They said it was a broken band. Thanks for all the help.
1993 Ford Explorer Eddie Bauer 4.0L Excessive Emissions VIN: 1FMDU32X4P
Verified the signal was wrong found that with sensor unplugged the return wire had 4.7 volts and it should have zero nothing is returning. Checked wires for short to reference voltage and all checked good. Internal short in pcm. Replaced with reman and all is ...
1999 Ford F-150 4.6L compression VIN: IFTRX18W8X
thanks for all the replies. i wish i could give you all a better answer. i waited as long as possible to close but don't have the final results. i heard the customer is having someone else put a new engine in. some of you said to replace the engine,some said...
2005 GMC Envoy SLE 4.2L head bolts VIN: 1GKDS13S65
You guys hit the bolt on the head so to speak. Overwhelming replies said to hit the head bolt with a hammer and brass punch hard enough to shock it before attemting to remove. Works every time. Thanks again.
1997 Jeep Wrangler SE 2.5L No Start VIN: 1J4FY29P8V
after several hours of testing different circuits and sensors i was informed by the customer that he had jump started the vehicle (it had a dead battery). as it turns out when he tried to jump it ,guess what, he crossed the leads and yes he killed the computer...
2003 Jeep Liberty Sport 3.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GL48K53
i replaced 2 coils cyl 4 coil was burnt external and cyl 2 was inop also it burnt pcm coil driver cyl 4 i replaced both coils and sparkplugs took jeep for a road test about 10 miles and on the way back to the shop jeep started missing and check engine light ca... Trouble codes: P0301 (cylinder 1 misfire).
1999 Kia Sportage 2.0L MIL Lamp on VIN: KNDJB6230X
Ok this one is fixed. Thank you all for the grat insight and help. The process I took at coming to a decision to replace the injectors was this. First I checked the maf tps and o2 seosors at the sensors and also at the pcm to verify that the pcm was getting th...
2003 Lincoln LS 3.9L Hesitation, Cuts out, Rev Limiter VIN: 1LNHM87A83
The problem with this Lincoln was indeed bad coils. There were no misfires and I could not see and problem with the coils with the scope at idle. the coil under extreme load would spike the system which would cause either loss of injectors or injectors and spa... Trouble codes: P1270.
1996 Mercedes-Benz E320 3.2L Mechanical VIN: WDBJF55F1T
Replaced cam adjuster has solved the problem. Perhaps the machine resurface of the head brought the valves closer to the pistons. (but the head thickness was within spec.) Maybe the old adjuster worn out just enough to allow few more degree of advance to cause...
1987 Porsche 944 2.5L No Start, Stall
No DTC Info According to post by members, there is no dtc info for this model for the DME. DME/ECU The ECU is built into the DME under the passenger side floor pan. Users suggested checking the DME relay which tested good. Others suggested a bad DME, bad...
2002 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWVD63B52
Some of the replies mentioned after an market radio causing a ground (k-line) but as stated the radio in this VW was a factory unit. A few other replies suggested a bad ABS module as the failure rate is high on these units. The fix was, as Stephen from Califor... Trouble codes: 1624 (MIL request), 1626 (Data bus missing message from trans), 1636 (Implausible message air bag to PCM), 1649 (Data bus message missing from ABS), 1650 (Data bus message missing from Inst Panel).
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