Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 18, 2005
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for All Makes and Models
Help Request Answers
1991 Buick Park Avenue 3.8L No Start VIN: 1G4CW53LXM
Towed in, cust. said it would start and then cut off. Car cranks fine. No spark, no fuel pressure and no pulse for the injectors. There is no voltage at the pink/black wire at the ignition module. Applied voltage to module and still won't start. PCM numbers ju...
1995 Cadillac Seville SLS 4.6L Poor Idle Quality, MIL Lamp on VIN: 1GCKY5294S
this vehicle has been at the shop for weeks another tech did the work i have just recieved the car and am unable to find a cure it will start to idle rough at any given time last only seconds then run fine again seem worse around the city have added new wires ... Trouble codes: P0083
1986 Chevrolet S10 2.5L No Start VIN: 1GCBS14E8G
customer said truck setting warming up, died then restarted for just a moment, then died again, never to restart again, he replacedthe, cap ,rotor,wires,plugs,o2 sensor,map sensor,ignition module,coil,ignition switch, fuel pump & strainer,fuel filter,ecm, hall...
1993 Chevrolet K1500 Cheyenne 4.3L Poor Idle Quality, Surge, Cuts out VIN: 1GCEK14Z6P
Hello,Truck came in with idle problem.Upon testing found the primary and secondary ignition patterns have one cylinder that has high kv.When you turn key off and restart the truck the bad pattern will switch cylinders.The truck does not have a miss.What it doe...
1995 Chevrolet Cavalier 2.2L Poor Idle Quality, Misfire VIN: 1G1JC5244S
Hello all techs & thanks for your help in advance. This car came in running very badly. When first started cold it was worse than hot and I could smell gas out the tail pipe. It has done this for a few thousand highway miles. After testing I found no codes, t...
2000 Chevrolet Blazer LS 4.3L No Start, Cuts out VIN: 1GNDT13W2Y
2000 Chevrolet blazer with the passlock security system. Truck will start then after 1 to 2 second stall. Vehicle has no injector pulse and is a sure fire symptom of a security system problem. But, there are no DTC's, the security light with key in run positio...
2000 Chevrolet Express 2500 5.7L Trans/ Engine VIN: 1GCGG25R7Y
Hi IATN members, Have tried to figure this van out but have had no luck. This van stalls when put into gear D or R and light power brake. Have had update for this condition from dealer TSB. Sent to trans shop for Tcc solenoid out of specs,drove a week. Va...
1993 Chrysler Imperial 3.8L No Start VIN: 1C3XU56L3P
See related repair history first. We confirmed it was in the PCM. We tried a Mopar rebuilt computer with no luck. With the new computer installed it would shut down fuel and spark after cranking about 5 seconds like its going it to an anti theft shutdown. The ... Trouble codes: 42 (asd circuit), 53 (internal pcm failure)
1999 Chrysler Town & Country (Van) LX 3.8L anti-theft VIN: 1C4GP64LXX
O.k Chrysler Techs. This is my sister's van. The problem was in the BCM for wiper problems, that's fixed. The thing is I knew on 96-98 model Chrysler vans you could crank vehicle with BCM out of the vehicle, not so the case here. I knew you couldn't do that wi...
1997 Dodge Intrepid 3.5L Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 2B3HD46F9V
thanks in advance car came mil light on car surges enough to make your neck sore found code 1391 crank pigtail broke at sensor easy fix i thought repaired pigtail with new one and new dealer crank sensor ( same problem ) i have checked camshaft to cam gear ali... Trouble codes: 1391 (intermittent loss of cmp or ckp)
1999 Dodge Avenger 2.5L poor acceleration VIN: 4B3AU4ZN9X
this avenger is a headache. i test drove the vehicle, poor acceleration, lacks power. the check engine light comes on for bulb check, then stays off. data appears normal. no codes set. removed the o2 sensor in each manifold and checked backpressure, .5 psi at ...
2004 Dodge Sprinter 2500 2.7L oil warning VIN: WD2PD64344
High oil pressure diplay comes on after driving approx 15 minutes on freeway. Oil level is full,not overfull. Suspected oil pressure switch. Ordered one from dealer. They sent part # [...]. Problem is A) where is it? B) is this even the problem? Dont have ...
1990 Ford E-150 Econoline Custom 5.0L Stall, Poor Fuel Economy VIN: 1FDEE14NOL
hi teem this one had been in another shop van won't idle and floods real bad the only way you can get your computer to communicate is to ground 1&2 on the self tester plug in, in the scamatic it shows these two are ground also the vehicle seems to idle when ...
1995 Ford Explorer XL 4.0L Door locks will not lock or unlock with the remote VIN: 1FMDU34XOS
This vehicle has a keyless entry\anti theft system that is inopperative. I changed the batteries in both remotes with the same result. I then located the module to inspect wiring for powers, grounds, and continuity. No problems were found. I then tried to get ...
1995 Ford Crown Victoria 4.6L engine VIN: 2FALP73W5S
any reason why massive oil comsuption, a qt. ever 400 miles, runs perfect, no blue smoke ,no leaks
1995 Ford F-250 Special 7.3L Poor Idle Quality, Hesitation, Poor Fuel Economy
Hello all, This is a ranch truck used mainley for hauling bales and feeding cubes. A lot of time spent idling through the pasture. Checked glow plugs for hard start and they looked good. Fuel filter was changed but did not help. The truck is a hard start to a ...
1997 Ford Taurus SHO 3.4L Cuts out VIN: 1FALP54N5V
This one is killing me. The owner is the kind of customer that any shop would love to have so I really want to figure this one out for him. Origionally the vehicle came in with a lack of power complaint, the other drivability tech diagnosed it and did a tune-u... Trouble codes: P1101, P1780 (trans ctrl sw out of range - koeo self test), P0102 (maf/vaf ckt low input - memory code)
1999 Ford F-350 Super Duty Lariat 7.3L Excessive Emissions, Cuts out, Misfire, MIL Lamp on VIN: 1FTWW33FXX
Thanks for your help in advance iatn. I'm not a diesel mech. This veh came into the shop with no power. Check eng. lt. was on and found code p1282 excesive icp. mem code. P0476 exh press control valve preformance. Preformed inj buzz test (pass) preformed cyl ... Trouble codes: P0275, P1282, P0476
2000 Ford Crown Victoria 4.6L starter VIN: 2FAFP71W9Y
This vehicle has been experiencing intermittent and random starter engagement and as of yet we've been unable to locate the source of the problem. Everything works normally for a time (random), then all of the sudden and with no warning the starter will activa...
1996 GMC Safari SLE 4.3L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GKDM19W9T
car will run goood when it wants to. then all of a sudden will pop out with p0339 crankshaft circuit int. and p0341 cam sensor performance. timing retard will go to 60 degrees. and will run bad i can tell by noticeing it on tech misfire on #1 and #3 cylinders....
1998 GMC 7500 7.0L stays at idle VIN: 1GDM7H1M5W
sometimes when u put the throttle to the floor the engine stays at idle. if you hold it there sometimes you cand hear the throttle open and the engine will rev then. this is a propane delivery truck. and has been converted to run off propane. i dont think this...
1999 GMC Yukon Denali SLE 5.7L transfer case fuse VIN: 1GKEK13R3X
vehicle came in with clunking noise in transfer case. replaced case with oem transfer case. since then has been popping fuses for case. was tested as a encoder failure through us and verified by gm. replaced encoder motor and problem still occurs. all wiring h...
1999 GMC C1500 Sierra SL 5.0L alternator VIN: GZX6D20001
he vehicule comes for voltage variation check computer fuse look good ...change alternator ...everything is good day later came back with the same problem ..last y rempalce it with napa alternator 105 replace it with 135 amm with the same pr...
2001 Isuzu Trooper Limited 3.5L engine oil usage VIN: JACDJ58X81
hi guys, this trooper uses 4 qts of oil between 4000 mile oil changes. its been using oil for the last 30,000 miles.any one seen this before? this guy loves his truck but cant stand the oil usage. thanks bill
1993 Jeep Grand Cherokee Limited 5.2L t case VIN: 1J4GZ78Y6P
Customer complains of first" check 4x4 switch" then service 4x4 switch, comming on in the message center...has never com on when in shop and have no diagnostics for this . Is this just a maintenance reminder?
1994 Jeep Grand Cherokee SE 5.2L Surge, HIGH IDLE VIN: 1J4G278Y3R
will not come down to target idle (650)idles at 800 to 1100 and surges in park and nutral (a/c off) when in gear idle betweeen 725-900. if the pcv is blocked off surge will be reduced to a 50- 75 rpm flux. and idles around 780, we have blocked every vacuum por...
1997 Nissan Quest GXE 3.0L MIL Lamp on VIN: 4N2DN1119V
This van keeps setting a misfire #6 code- it never runs bad but just sets the P0306 code and turns on the light- Any ideas? TIA Trouble codes: P0306 (Misfire 6 cylinder)
2001 Nissan Xterra SE 3.3L Poor Idle Quality, Surge, Misfire VIN: 5N1ED28Y91
this vehicle came in for a head gaskets another tech installed head gaskets and after he got done customer had car one day and came back with a rough idle at stop signs. no other problems that he noticed. we started by checking vaccum lines and smoking the eng...
2001 Nissan Frontier XE 2.4L MIL Lamp on VIN: 1N6DD21S91
2002 Nissan Altima 2.5L MIL Lamp on, Loss of power VIN: 1N4AL11D22
This vehicle was purchased one month ago by a personal friend. It has been to two different dealers and still has the same intermittent problem. Customer says that the "Ck. Eng" light will illuminate and vehicle looses power(obviously limp mode). If he stops t... Trouble codes: P2138 (Accelerator Pedal Position sensor circuit range/performance problem)
1996 Oldsmobile Cutlass Supreme SL 3.4L Poor Idle Quality, MIL Lamp on VIN: 1G3WH12XXT
Car came in a month ago with P-0301, replaced valve cover gaskets, plug tubes full of oil. Came back with the P-0300 and P-1441. Found evap hoses swapped, believe that was what was setting evap code but can't find any reason for misfire, our generic scan tool... Trouble codes: P0300, P1441
1997 Oldsmobile Cutlass Supreme SL 3.1L anti-theft VIN: 1G3WH52M1V
Hi Techs I got this car from the body shop. The steering colum was damaged trying to steal the car. They wanted there used colum installed. I did the install and the engine would not crank. I could jumper power to solenoid & would crank and start, also stay ru...
2000 Other European Arnage 6.0L WarningLight VIN: SCBLC31E9Y
I do not have any manuals for this car, not even the owner's manual. "Auto Ride Control" seems to be a similar system as in 90s BMW '7series electronic shockabsorbers (...there are similar plugs/wirings connected to each shockabsorber). As soon as the car star...
1997 Pontiac Grand Prix GTP 3.8L Alternator VIN: 1G2WP1211V
need to know what els could be causing this to happen. Do not think the computer is bad. Looking for any help I can get. Have had the car for 2 weeks.
2002 Pontiac Grand Am SE 3.4L Starting VIN: 1G2NF52E82
Hello all, I have this 2002 grand am se for a no start, no crank condition. No power to starter trigger wire. Went to mitchell and pulled up Starting/charging wiring diagram for 2002. Checked for power at crank fuse while cranking: yes . Then i pulled relay ou...
1996 Porsche 911 Carrera 3.6L No Start, Stall, MIL Lamp on VIN: WP0CA2998S
Found car w/dead battery. Charged battery and found loose positive clamp. Cranked car and verified no start. Test for codes, got 1152- 11 system voltage and 52 #6 injector. Tested for spark - good. Pulled #6 spark plug and found dripping wet. Test fuel pressur... Trouble codes: 11 (system voltage), 52 (6 injector)
1999 Porsche 911 Carrera 3.4L MIL Lamp on VIN: WPOCA2995X
This car keeps turning mil light on. It has adaptation codes. There is no vacuum leaks and it has good fuel pressure. Do you have any suggestions? Trouble codes: 35 (oxygen sensing cyl. 4-6), 27 (oxygen sensing cyl. 1-3), 70 (torque converter solenoid)
1992 Toyota Camry LE 3.0L parking light VIN: JT2VK12FXN
hi : parking lights stay on with the swtich in off position and the key is out.Disconnect and reconnect battery won't help.Disconnect and reconnect combination switch (head light switch),the parking lights stay off,and the problem never reoccur again.Removed...
1996 Toyota RAV4 2.0L Cuts out, Stall VIN: JT3YP10V2T
Hi and thanks for checking this out. RAV4 came in with a intermittant stall at idle with cel on. Owner said alarm system was disabled 2 days prior because it was going on-off crazy. She does'nt recall if stall happened before this occured or not. Scanned and g... Trouble codes: P0000
1998 Toyota Avalon XL 3.0L electric windows VIN: 4T1BF18B2W
Hello everyone These windows all stopped working at the same time. To me this seems to be a hi-tech system! I have no power at termnials 10&11 on the master switch and no current at the junction box before it goes thru the door post. It has some type of an el...
1994 Volkswagen Jetta GL 2.0L cooling fan VIN: 3VWRA81H7R
Car came in because engine temperature was too low and customer was complaining about low heater temp. The cooling fans run constantly and the thermostat was stuck open. Replacing the thermostat resolved the lack of heat but replacing both the thermo switch an...
2000 Volkswagen Beetle GLS 1.9L MIL Lamp on VIN: 3VWCF21C3Y
costumer complaint, check engine light on, hook up scan tool, code 3130 set egr? check vacumn hoses, found hose between egr and wastegate, bypass regulator solenoid valves going to air cleaner off, reattach, check for battery voltage to egr solenoid term one, ... Trouble codes: 3130 (egr)
1987 Volvo 780 2.8L Poor Idle Quality, Misfire, Long Crank VIN: YV1HA6927H
Here's one involving a rare Bertone Volvo with the rare b280f V6. This car starts well cold and runs smooth and strong for about 15 minutes until fully warmed up. Once warm, there is a heavy misfire upon throttle tip-in, feels like a lean miss, smooths out aga...
1994 Volvo 850 2.4L shifting VIN: YV1LW5529R
Car ran great for about a month then the trans shift light started flahsing.This started when customer shifted mode switch from econo to sport.The car would also only take off in 2nd gear from a stop.Seems to be intermitent.Car was towed in twice and both time...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1993 Chevrolet Lumina 3.1L power steering pump/line VIN: 2G1WL54T2P
We only got a few responses on this one but they all seemed to point towards the line being bent causing it not to seal. We ended up replacing the line and when it was out of the car we pressure tested it with air and soapy water. The line ended up having a cr...
1997 Chevrolet K1500 Cheyenne 5.7L MIL Lamp on VIN: 2GCEK19R4V
thanks to all that replied.he called today to tell me he put a new distributor cap on and it starts fine and runs well. he said the service engine soon light still on.i told him we need to try a crank relearn which all the replies suggested. he gave it back to... Trouble codes: P1345.
1999 Chevrolet Venture 3.4L traction control VIN: 1GNDX03E8X
Can anyone say KISS as in keep it simple stupid. After reading Josh's info, I realized the system was working. When I burned off the tires, the low traction light on the dash came on. If I operated the momentary switch, the light stayed of on the dash. I pulle...
2001 Chevrolet Silverado 2500 HD 8.1L Cuts out VIN: 1GCHK29G91
No conclusion. Tested fuel pressure, OK. Wiggled wires. Checked for codes, none. Checked crk sensor. Then customer wanted to stop spending money until it fails more regularly. Many thanks to all who responded it was a big help channeling my thinking.
1999 Chrysler Town & Country (Van) LX 3.8L MIL Lamp on VIN: 1C4GP54L4X
Thanks for the very fast responses. After all day testing & inspecting I finally came across the problem. Some kind of creature had chewed the downstream o2 sensor harness apart right in the rubber harness that goes through the body to the exhaust pipe. It app... Trouble codes: P1478, P0118.
1991 Dodge Caravan SE 3.3L Hesitation, Misfire, Poor Fuel Economy VIN: 184GK54R4M
thank you for the replies we had. as usual they were all helpful. we checked everything that was suggested and found a broken exhaust spring on the rear head. the customer is happy and we learned an awful lot. thanks again.
1996 Dodge Intrepid 3.5L engine VIN: 2B3HD46F8T
Fortunately, this nightmare did NOT need headgaskets as many of you suggested. In fact, I'm impressed that this thing has overheated so many times WITHOUT blowing them!! Anyway, the connector on one of the cooling fans was broken off, so I had to repair that b...
1998 Ford Taurus LX 3.0L MIL Lamp on VIN: 1FAFP52UOW
after hooking up scope , looking at cam and crank wave form . Check cam timing timing , on the money. After reading all replies, read ford info , I guessed The only thing left in this system is the crank sensor . Could crank sensor be weak? Installed new crank... Trouble codes: P0340.
1999 Ford Windstar SE 3.8L MIL Lamp on VIN: 2FMZA524OX
thank you everyone for your help and quick response. customer is now deciding whether to invest the money to fix vehicle or to sell. so might come your way if i don't fix!!! Trouble codes: P0171, P0174.
1999 Ford Taurus SE 3.0L radio VIN: 1FAFP53S2X
well alrighty it turns out at one point this car had a cd changer from the factory that had been removed in a somewhat crude fashion from the trunk, almost as if it were stolen. all the wire ends were bare and somehow powering things...seperate all the wires a...
1999 Ford Escort ZX2 Hot Coupe 2.0L Mechanical VIN: 3FAKP1136X
the problem was the timing belt tensioner pulley right next to the balancer pulley it looks plastic and has come apart and broke the timing cover open. i have not fixed it yet but ordered parts. Thank you for all the responses!
2000 Ford Focus SE 2.0L Engine VIN: 1FAFP34P0Y
Hi sorry it took so long to get back, wanted to make sure of the repair. Customer did not want to put the cost of a new head or machining the old one, into this car. He opted for the cleaning. What we did was run seafoam thru throttle body while hot letting th...
2000 GMC Yukon Denali 5.7L low beams VIN: 1GKEK63R9Y
hi to all who attempted to aid me in finding a fix for the'no low beam' complaint on the yukon. all of the nine replies i received were very good & in excellant detail. a few on the responses were things we have allready tried, thank you for those people who w...
2002 GMC Safari SL 4.3L Excessive Emissions VIN: 1GTDM19XX2
Thanks to all who replied. My problem was 2 fold. 1st, I was focusing on running the catalyst monitor first. I thought it had to run before the evap monitor but I was wrong. 2nd was not meeting the criteria to run the evap monitor. I had not even looked at tha...
1987 Honda Prelude 2.0L running VIN: BA5-100466
Thanks to those who replied to my request, yes it was the EGR valve on further inspection the vacum hose had been blocked off. So removed the valve it was jamed closed from carboned deposits. Also the ports were full off carbon, cleaned both the valve and port...
1991 Honda Civic LX 1.5L turn signals VIN: 1HGED3651M
Good response on this problem. Every suggestion from the turn signal switch to the flasher to the hazard switch. The fix actually came from the gofer in the shop. He asked why we changed all the bulbs on the car and we explained that the flasher is sensitive t...
1997 Hummer H1 6.5L heater VIN: 137ZA9037V
Problem was a head gasket leak introducing air into the cooling system creating a air pocket. thanks for all of your help!!
2000 Jaguar S-Type 4.0L Hesitation, Misfire, MIL Lamp on VIN: SAJDA01D8Y
Apparently we were not agressive enough with the coil packs. Stewart Rosen (within an hour of posting) told me they change all four packs on one side, then do the other side too if it is not cured. That's what we did, and it worked with 8 new coils. I received...
1993 Jeep Wrangler S 2.5L No Start, No Mil light VIN: 1J4FY19PXP
Ok this one is running again. Thanks for all the helpfull replies. The readers digest version would be that we had diagnosed the ecm and replaced it with a defective unit. (Which had very similar problems) Michael in Maine along with many others suggested lo...
1995 Lexus SC300 3.0L MIL Lamp on VIN: JT8JZ31C2S
After looking into tis vehicle again, I found that te plenum was plugged up again. Recommended to the customer that the plenum should be replaced. Customer decided that he would live with the check engine light on.
1990 Mazda Miata 1.6L No Start VIN: JM1NA3514L
Replaced ignition switch, with no labscope it was difficult to diagnose problem with crank angle sensor, customer did not want to spend any more time on vehicle, decided to trade.
1999 Mercedes-Benz E320 4Matic 3.2L Misfire VIN: WDBJH82F7X
Well it looks like its the harness, AC problem is fixed. It was the reciver. It's so small, That for the size of the charge, that any extra oil or moisture will reduce the charge capactiy, As soon as I change the harness out I will post a fix. The customer has... Trouble codes: P0300 (ramdom misfire), P0304 (misfire), P0305 (misfire), P0306 (misfire).
2001 Mercury Sable LS Premium 3.0L Excessive Emissions, MIL Lamp on VIN: 1MEFM55S51
I pulled the tank and there were no restrictions. The fuel pump pumps the fuel to the fuel filter, then it goes either to the injectors or back to the tank through a pressure relief valve. I could not find a lower pressure valve or figure out how to mount a re... Trouble codes: P0172 (bank 1 rich), P0175 (bank 2 rich).
1992 Mitsubishi Diamante LS 3.0L Fluid VIN: JA3XC57B5N
First of all, I would like to thank everyone who took the time to relpy to my help requests. No matter what I tried, I could not get the fluid to stop foaming. I used a vacume pump to try to get the air out when I found the pump had an o-ring/seal that was lea...
1997 Nissan Quest XE 3.0L MIL Lamp on VIN: 123EHDJRIW
Thanks for all 9 replies. Most wanted to know if it was heater circuit which it was. Cust. had it check at Autozone and they told him it was O2 sensor and he did not want me to diag. Just replace it. When car came back I checked wiring at O2 sensor and it was ...
1998 Nissan Altima GLE 2.4L Poor Idle Quality, High idle speed VIN: 1N4DL01DXW
I did check all the p/s and other load acc. and none of them was the problem. Not sure about the converter response. Torque converter or Catalytic? Standard tranny and car ran like a champ so no plugged exhaust. Customer took car and I have not heard anything ... Trouble codes: P0440.
1998 Nissan Sentra 1.6L No Start VIN: 1N4AB41D4W
Thanks to all who responded- this car was fixed like this- squirted 2 squirts of oil in each cyl, cranked over a few revolutions to equalize oil around piston rings(compression came back)- then installed new spark plugs, pinched off rubber fuel line and while ...
1994 Oldsmobile 88 Royale LS 3.8L hard start, code set VIN: 1G3HY52L8R
thanks for the input everyone. Most said the crank sensor can set these codes without setting it's own code. The crank sensor tested good on all the tests, but I decided to replace it anyway. So far so good, it's been gone for 2 weeks. It was a pretty intermit... Trouble codes: P0321, P1361.
1995 Oldsmobile Aurora 4.0L Charging VIN: 1G3GR62CXS
Well, it is finally fixed- after TWO alternator changes (no fault of the NAPA alternator). I had checked power and ground voltage drops as I always do- even doing a 100amp load test on the positive feed wire for the alternator to check for a bad connection som...
1986 Rolls Royce Silver Spur 6.7L Rear shocks VIN: SCAZN42AXG
First I'd like to thank those that respoded. The consenses is that there is not an aftermarket repair manual for these cars. The repair manuals can be purchased from the dealers. They are sold in individule volumes (engine vol. --wiring vol. etc.) A special th...
2000 Other European 4WD 4.6L 3-4 shift VIN: FALLPAMD3X
Thank you to Jerry, John and Kenneth for their reply. This must be a very rare problem as nobody seems to have a solution. The transmission rebuilder spent a few hours at the dealer and they came up with nothing as well. It seems they hit a brick wall and ther...
1995 Pontiac Grand Am SE 3.1L trans noise VIN: 1G2NE55M2S
we took rear cover off thinking we would find the pump chewed up we did not at that point we stopped work & told customer our findings. customer decided to put used unit in. we installed today noise is gone. did disassemble old unit down to chain. & found no b...
1996 Subaru Legacy GT 2.5L engine, cooling system VIN: 4S3BD6755T
It was the head gaskets. We had the heads pressure tested and surfaced for good measure. Thanks to all
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next