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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 14, 2005
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for All Makes and Models
Help Request Answers
1992 Acura Vigor LS 2.5L No Start VIN: JH4CC2648N
Vehicle came in with a dead battery. Charged it & tested charging system. All checked ok. Drove vehicle & it worked fine. Customer came to pick it up & it wouldn't start. It cranked ok. Sprayed some carb cleaner into the intake & it would run. After it sat for...
1992 Buick Park Avenue 3.8L Dual Zone VIN: 1G4CW53L5N
hi everybody : This car has a dual zone ECC systems,customer complaint blowing cold air at passenger side when the system is set at hi heat,the driving side is working normally. This vehicle has a cooling leaks at the intake by pass hose 2 months ago,the bat...
1989 Cadillac Fleetwood 4.5L Excessive Emissions, Poor Idle Quality, converter glows red VIN: 1G6CB5153K
OK, this started out as a slam dunk that is now slamming ME. What seemed obvious pattern fail territory is now uncertain guessing games. Subject vehicle was referred to us...new customer...transmission was REBUILT locally less than 20 miles ago. Customer comp...
1990 Cadillac DeVille 4.5L MIL Lamp on VIN: 1G16CD1331
thanks in advance for any help. car came in w/ check engine light on. pulled code 48, egr control problem. went through the flowchart from alldata and it said to replace the egr solenoid. after replacing solenoid no vacuum was getting to the egr still. 18" of ... Trouble codes: 48 (egr control problem)
1985 Chevrolet G20 Sportvan 5.0L windshield wipers VIN: 1GBEG25H8F
This van has a problem with the windshield wipers coming on with the wiper switch in the off position when you first start the van or just turn the key to the on position they wipe anywhere from 1 to 4 times then return to the park position. They work fine aft...
1986 Chevrolet Monte Carlo 5.0L Starting VIN: 1G1GZ37H6G
Customer brought his vehicle in with the complaint of "dragging during starts" I went to pull the car in adn I didn't think it was going to start. It was cranking very slow, but it started and I drove it in adn went to try the starter again and it was just fin...
1994 Chevrolet K2500 Suburban 6.5L cooling system VIN: 1GNGK26F0R
Howdy There, This is my personal truck and I hate working on it. November 03 I removed the heads and had them welded due to combustion gases in the coolant reservior. Now I am loosing about a gallon of coolant a week, no bubbles in reservior this time but the ...
1995 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W1S
Greetings, techs, this blazer intermittantly sets p0138 - b1s2 o2 voltage high. The test tree in MOD has you check o2 for operation. Then you jumper o2 sensor high and low wires on ecm side and look for reading ( 35 mv. Got a reading of 18 mv. Tree then direct... Trouble codes: P0138
1997 Chevrolet Blazer 4.3L Drive-axles VIN: 1GNDT13W9V
The 4 wheel drive on this vehicle will no engage to front wheels. It is a push button on the dash and the light comes on when the button is pushed. The vacuum actuator under the battery is getting vacuum. The actuator is also working when the 4wheel drive is t...
1997 Chevrolet Blazer 4.3L 4 wheel driv VIN: 1GNDT13W9V
The 4 wheel drive on this vehicle will no engage to front wheels. It is a push button on the dash and the light comes on when the button is pushed. The vacuum actuator under the battery is getting vacuum. The actuator is also working when the 4wheel drive is t...
1997 Chevrolet Blazer 4.3L transfer case VIN: 1GNDT13WOV
Hi Group, In desperate need of your help. This Blazer came in locked in 4 Lo , shift motor would just clunk when attempted to shift like it was jammed. Replaced with one from a salvage yard , it now has 2 Hi and most of the time 4 Lo but rarely 4 Hi. This is s...
1999 Chevrolet Astro 4.3L Surge, Misfire, MIL Lamp on VIN: 1GNDM19W8X
Customer has brought van in 3 differnt times, complaining of shudder/misfire at highway speeds (freeze frame shows 56-60 mph)usually first drive of the morning. The only obvious data that shows out of range is the cam retard- Scanner shows -16 degrees. Once co... Trouble codes: P0300 (Random misfires)
1992 Dodge Stealth R/T 3.0L volt meter, battery VIN: JB3XD64BSN
Charging system failure while driving in the rain with heater, wipers, headlamps, and radio on, apparantly on twisty roads, possibly bumpy road surfaces. Note owner is an aggressive driver. Symptoms include dimming of headlights and erratic, bouncing volt met...
1995 Dodge Ram 2500 5.9L Charging System VIN: 1B7KF26C6S
What did i miss?
1998 Dodge Intrepid 3.2L No Start, Stall VIN: 2B3HD56JIW
HI all. This car came to me on the hook, had been to other shops to no avail. Initially the car would crank only sometimes and mostly start and stall when it did. Only once did the car continue to run after it started, other times it would stall like the anti ...
1995 Ford Windstar GL 3.8L No Start VIN: 2FMDA5145S
The van takes a very long cranking time to start first thing in the morning, this problem has been going on for some time now and this is not the first try at solving the problem. In Nov,04 replaced MAF sensor and fuel filter and the problem seemed solved. Cus... Trouble codes: P1407 (egr system), P1131 (front 02 sensor lean), P1151 (front 02 sensor lean)
1995 Ford F-350 XL 7.3L Poor Idle Quality VIN: 1FTHF36F4S
Hi Guys; This is an unusual powerstroke problem that I was in hope that someone could help with. This truck has a history of repeated glow plug and controller failures. The truck currently has 2 glow plug relays on it that someone installed, seperating each...
1996 Ford Explorer XLT 5.0L Hesitation VIN: 1FMDU35P6V
obvious hesitation from a stop. I can even simulate in shop in park by quickly snapping throttle, at times it sounds as though it is popping back up through the air snorkel (lean misfire?). No KOEO codes, no KOER codes. It did have a p0153 code (up O2 slow res...
1997 Ford F-150 4.2L crank damper VIN: 1FTDF1725V
This truck literally threw a connecting rod out the side of the block at about 120000 miles. The first reman engine blew up within 10k miles. The 2nd reman engine has now broken off the crank damper twice. I think I've seen posts on this topic before. What is ...
1997 Ford E-350 Econoline 7.3L Low pedal VIN: 1FDKE30F1V
Vehicle has 2 complaints, low pedal (poor stopping power) & on slippery roads at slow speed the front brakes lock up but rears do not (rear wheels keep pushing inless you put trans in neutral). We ordered the Super Duty master cylinder Ford part # [...] w...
1999 Ford F-350 Super Duty Lariat 7.3L No Start, Cuts out, Stall, Misfire VIN: 1FTWX33F2X
This is a hair puller with a no start at times and I've tried to lab scope the cam sensor and found a bad square wave and I replaced with a new Ford one. That cured the wave form, but the problem is still there and out of desperation I replaced with a second c... Trouble codes: 1670 (IDM related), 344 (cam sensor)
2000 Ford Windstar SEL 3.8L Mechanical VIN: 2FMZA5346Y
Hello all, I have this van in here and the problem i am having is a screeching noise from the belt area. If I remove the belt the noise is still there and coming from the crank pulley area. I removed the crank pulley and cannot see anything wrong with that ar ...
2000 Ford Taurus SE 2-Valve 3.0L Misfire VIN: 1FAFP5522Y
Car came in for missfire codes #4 and #3. Plug wires were bad and replaced. Now only #3 missfire all the time. #3 injector pulse tested bad. Replaced. No change. Compression test and cylinder leakage test shows no problem. See test results below. Removed and c... Trouble codes: P0303 (Missfire 3 cylinder)
2000 Ford Focus ZTS 2.0L when braking VIN: 1FAFP3831Y
customer complained of clunking when braking and a unexplained acceleration or the feeling that the engine speeded up when taking foot off accelerator, also noted SES light on. Scan checked pcm and found PO 705 (MLPS range sensor curcuit malfunction). Road tes... Trouble codes: P0705
1996 GMC Jimmy 4.3L turn signals VIN: 1GKDT13W5T
hi everyone, i hope somebody has seen this one because i am at witts end.thi car came in and when the left turn signal is on the left turn signals blink, the right turn signals blink dim, the panel lights blink, the compass and overhead lamps blink along with ...
2000 GMC Sierra 1500 SL 4.3L No Start VIN: 1GTEC14W2Y
This truck will not fail to start unless it sits for aprox 24 hours -- starts normally at 12 hours. Fuel pressure does drop, but reads the same at 12 as it does at 24 hours. Cranking RPMS read on scanner when we have the no start. I have not noticed a security...
1996 Hyundai Accent 1.5L Hesitation VIN: KMHUF21NPV
Thanks in advance for your help...customer complains of surge/chugging under light load. Very intermittent under test and surge quite minor but occasionally on move off coughs 1-2 times then okay for rest of test drive. Carman Scan tool reveals no codes but in...
2005 Jeep Liberty Limited 3.7L heated seats inop VIN: 1J8GL58KO5
Hello: battery goes dead intermittingly ,also LED on passenger seat inop on high only,replaced switch , module, seat grid bottom still samething. draw was 36 ma for battery. Seat testing was ohmed all wires under 5 ohms,the seat gets hot on high &low but LED o...
1997 Kia Sephia GS 1.8L Alternator VIN: KNAFA1256V
Hi, another tech at my shop is working on this one! I told him I'd run this for him. He said he has installed a new alternator and a used pcm. Still not charging. He has checked fuses. This alt is pcm controled. Has anyone ran into a problem with these before....
2000 Kia Sportage 2.0L filter adapter/cooler VIN: KNDJA7230Y
Calling all KIA tech's...We have this Sportage that has an oil leak right where the oil cooler/filter adapter mounts to the block adapter. Looking at a KIA diagram that was faxed to us by our friendly dealer, there doesn't seem to be any seals between the cool...
1992 Lexus SC400 4.0L Stall VIN: JT8UZ30C9N
toyota lexus techs please help; this 92 sc 400 starts and idles great.as soon as the gear selector moves out of park or nuetral the engine abruptly dies like key is shut off.once engine dies code 15 is set. ignitors test perfect.we removed shift position switc... Trouble codes: 15 (ignitor 2 to ecm)
1999 Lincoln Navigator 5.4L A/C system VIN: 5LMPU28LJ0
Hello Techs, I'm having a little problems with this Navigator. It came to my shop because the A/C doesn´t cool enough. I checked the pressures: 35 psi in the low side and 255 psi in the high side, the compressor never cycles. I put my hand in the condenser and...
1993 Mazda MX-6 LS 2.5L alarm VIN: 1YVGE31B8P
Hi, Thanks for your time. Customer's complaint is that the factory alarm will sound off for no reason, usually in the wee hours of the morning. We are unable to duplicate the problem, but suspect there is a sensor or possible circuit board that is affected by...
1979 Mercedes-Benz 300D 3.0L No Start VIN: 1231301214
Hello everyone, I have a customer with this 79 Mercedes. He called to scedule a appnt for the battery going down, and said he had to cycle the glow plugs 2-3 times before car would start. The day before bringing it in he called and said he had a alternator pro...
1995 Mercury Mystique 2.0L Poor Idle Quality, Hesitation, Surge, Stall VIN: 1MELM6535S
vehicle came in with no power do basic test and tune up and find on road test back pressure at 4.5-5.3 psi so we re-places the converter and cut off the muffle and still no power check timing marks put cylender nuber one on top dead centure and check the rear ...
1994 Nissan Altima GLE 2.4L Unknown VIN: 1N4BU31D7R
i have this 94 altima that wont down shift after about a 35 mile drive after coming to a stop, no other drivability problems, snap on scanner would not communicate with it, i checked for codes by turning the screw on the computer and counting the led flash, ha...
1995 Nissan Maxima SE 3.0L bcm VIN: JN1CA2103S
Vehicle has a 145ma current draw, battery goes dead after a week of sitting. Pull #40 fuse and draw comes down to 80amp.Unplug fuse #60 "BCM" and draw is gone.I have searched achives and found a few posts with the same problem but no fixes were ever presented ...
2001 Oldsmobile Intrigue GX 3.5L MIL Lamp on VIN: 1G3WH52H81
hello all this olds has been here twice within the last year to have an air pump put on,due to water getting into the pump motor.Ihave moved the air tube with the filter everyway to keep water from entering.There are no tsbs on this problem.Any help from all y... Trouble codes: P0410
2001 Rolls Royce Silver Seraph 5.4L oil service VIN: SCALA61E31
I need to know if any one can tell me how to reset the oil service light on this rolls royce
1998 Other GM Corsa B 1000CC preformance VIN: WOLOSBF08W
Vauxhall Corsa B (European model) 1998 model. 1000cc [...] model. Engine number. X10XE Chassis [...] Dear friends, It is great to be able to write to you guy's out there again. Homwever, I have a problem with a Corsa B, & I am wondering...
1991 Pontiac Sunbird LE 3.1L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 1G2JB11T8M
this car seems to have rough idle once it goes into closed loop. intergrator drops to 85 and block learn stays at 100. with the probe HC reads great at 2000 RPM and CO is great .2 but when relasing the throttle the HC & CO goes up and down. So bad sometimes 8-... Trouble codes: 45 (rich condition)
2002 Toyota Sequoia Limited 4.7L Steering System VIN: 5TDZT38A42
I tested it with the toyota tester and retrieved a C1231, which states that there is a malfunction in steering angle sensor. The VSC TRAC and the TRAC OFF light are on. When we try to clear the fault it comes back immediately. We have performed the centering o...
1999 Volkswagen Jetta Wolfsburg Edition 2.0L cruise control VIN: 3VWPB81H5X
HELLO VOLKSWAGON TECHS our shop has a jetta with an inop cruise control to start verifed vss signal ok check codes no codes we have a ast scanner checked for b+ at switch none checked fuse 5 amp s51 no power trace back to tcm black and green wire pin 61 no pow...
1995 Volvo 850 2.4L MIL Lamp on VIN: YV1LS5514S
good morning, can not get code for knox sensor out of computer. have replaced computer with used unit. it did change which sensor code was set. with original computer it had front sensor code and with used computer it set rear sensor code. has someone had a pr... Trouble codes: 433

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2000 Audi A8 Quattro 4.2L Timing Belt VIN: WAUFL54D11
This car is fixed and back on the road. You don't need the tools. I removed the valve covers to see what the 'popping noises were that I was hearing. The heads have two camshafts in each head. They are connected by a chain. There is a hydraulic tensioner that ...
1996 BMW 328i 2.8L washer pump VIN: WBACD4323T
hello i would like to thank everyone that responded to my help request. i was a little confused because i checked a few other bmw's different models and years and they toggled the power feed not the ground that is why i wanted to know this. The ultimate outcom...
1976 Cadillac Eldorado 8.2L master Cyl, Hydrauric Unit, Proportion Valve VIN: 6L67S6Q214
Thanks much again for those who gave me great infos for fixing this car. Frank from cal hit on the money. I checked rear caliper & found out parking mechanism was frozen & somebody adjusted parking cable all the way but still rear brake doesn't hold(free wheel...
1985 Chevrolet K30 Custom 5.7L clutch VIN: 1GBJK34M8F
first i want to thank all that took time to reply.i blocked off the clutch master and it was ok,after bleeding the system with both vacuum and by hand, still had same symptom.i had the truck up in the air and could not watch the fluid reservoir mistake no1,the...
1985 Chevrolet Blazer K10 6.2L all gears
Well, almost everyone thought it was the torque convertor that failed. And they were right. I sent the torque into a convertor shop and they cut it open and the splines were stripped. Reassembled the trans and installed a new torque conv and all is well. Thank...
1995 Chevrolet Corsica 3.1L heater VIN: 1G1LD55M65
Vehicle was repaired and heat is now working great. Problem was found when the intake was removed and EXCESS silicone was seen covering the rear coolant ports. Seems someone thought more was better. Also flushed out system just to make sure that no more globs ...
1997 Chevrolet Blazer 4.3L Misfire, MIL Lamp on VIN: 1GNDT13W4V
Thanks to all who replied. A special thanks goes out to John Thorton. I contacted him about this Blazer, and he recalled a case in Canada that had the same simptoms and directed me to the IATN forums section. Sure enough, the simptoms and lab scope patterns we... Trouble codes: P1341 (Can Sync), P0339 (Crank Sensor Erratic).
1997 Chevrolet K1500 Cheyenne 5.0L abs VIN: 1GCEK19M3V
Thanks to everyone who responded. We lifted the vehicle on the hoist and spinning all four wheels [ 4x4 ] applyed brakes to simulate abs operation. Blead brakes again .[ as per Jeff from Indiana ] procedure. Truck has a good pedel. Road tested & customer is ha...
2000 Chevrolet Impala LS 3.8L Surge VIN: 2G1WH55K8Y
Thank you all for your help I monitored all the engine data and could find nothing wrong so I have come to the conclusion that the problem must be internal transmission and the customer has taken the car to a transmission shop
2002 Chevrolet Trailblazer LS 4.2L Drive-axles VIN: 1GNDT13S72
Thank you for your replies it was as many of you suggested the axle seals causing the noise. Replaced both outer seals and it took care of the problem.
2002 Chevrolet Tahoe LS 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEK13Z62
most of you got this on immerdiatlly. for some reason i overlooked that. The right side Cat. Convertor was broken and plugged. Thanks so much to everyone, Robert Trouble codes: P0300.
2002 Chevrolet Impala LS 3.8L Idles high VIN: 2G1WH55K22
I received several replies regarding the wiring harness and pigtail. After re-checking everything, the customer contacted a large, out of town dealership and they agreed to fix it under warranty. I haven`t heard anymore at this time. Thanks to all who relied a... Trouble codes: P1122 (TPS intermittant low voltage).
2003 Chevrolet Express 3500 6.0L Cuts out, Stall, MIL Lamp on VIN: 1GBHG31U23
Vehicle was returned to customer before I could try anything, customer was to return when truck when not needed. vehicle was brought to another shop on the road and after 2 days of working on it they found corroded wires in the computer harness behind left inn... Trouble codes: P0130.
1992 Dodge B150 5.2L No Start, Stall VIN: 2B5WB35Y1N
John pegged it ...it was a bad ignition switch...no ck eng light and no voltage to ECM Thanks all that replied and thanks Big JOHN [...] am just glad all we fix arnt like this one LOL
1995 Ford Probe GT 2.5L 5th Gear VIN: 1ZVLT22B3S
Thanks to those who replied. One hit it on the head the gears were worn and since Ford said they were no longer avaible, I got everthing for 5th and reverse used from a aftermarket supplier and it cost less than the few parts avaible from ford.After installing...
1998 Ford Windstar 3.0L Surge, Cuts out VIN: 2FMZA51LMW
This windstar is fixed, had multiple troubles one pattern failure, the trans range sensor. Half the replies we recieved stated this was common failure,can also cause other wiring gremlins. The abs prob. on the LF was a severly warped rotor the tone ring was ha...
2002 Ford Explorer XLT 4.6L trans or transfer case VIN: 1FMDU73W92
I road tested this vehicle 5 different times and was unable to duplicate the complaint. I did learn from the people who replied that there is a problem with the 4x4 low sticking in these vehicles and it usually is hard to get this itermitant problem to duplica...
2004 Ford F-550 Super Duty Lariat 6.0L Unknown VIN: 1FDAF56P24
well the unit is fixed and gone down the road, Thanks to all that replied, what we found was the snap ring in the fwd clutch planetary ring gear had broken and came out, it locked on the fwd clutch and burnt it up. The reverse planet was good but i replaced it...
1990 Geo Prizm 1.6L Transmission
Thank you for all the responses. Most said that when I downshifted it sucked up all the junk from the bottom of the pan and that if I dropped the pan I would find debris. Well, after removing the pan I did find some gunk. So I ordered up a filter kit and then ...
1999 GMC Sierra 1500 SLT 5.3L Heated Seat VIN: 2GTEC19T5X
Most of the advise I received pointed to the seat heater element as being the most common failure. It is wired in series with the seat back element so when one fails neither will work. Well, while moving the seat up & down, back & forth, tilting the seat back ...
1999 Jeep Grand Cherokee Limited 4.7L engine
I want to thank everyone for their replies.The problem was when they upgraded computer systems in late 01 they changed tone wheels(the problem is it is bolted on the crank inside oil pan its not the flex plate)and they changed cam tone rings.We ended up pullin...
2000 Jeep Cherokee Sport 4.0L Hesitation, MIL Lamp on VIN: 1J4FT4854Y
replaced the sir clock spring. the tps abd trans went back to operating normally. we had a hard time getting the steering wheel off though. thanks for all the help. Trouble codes: 123 (high tps voltage).
1993 Mercury Grand Marquis GS 4.6L Hesitation, Stall VIN: 2MELM74W0P
hello, the vehicle is fixed. we had cleaned the maf sensor previously, all throttle body ok, the fuel pressure was good, plugs etc fine. the customer and our shop had been using napa coolant sensors, switched to ford oem. so far so good the napa sensor was som... Trouble codes: P0116.
1987 Pontiac Bonneville 3.8L Poor Idle Quality, Cuts out, Stall, Misfire
i found that this is a 3 code 3.8.we had a bad cam sensor interupter.replaced timing chain and a new interupter and the car runs great.
1999 Saab 9-3 2.3L No Start VIN: YS3DDS8N01
We have fixed, or perhaps I should say finally diagnosed the vehicle. Last night I purchased three cans of 'Circut Cooler' spray from Radio Shack. I removed the cover on the ECU and sprayed it down with the engine running. BINGO, the car starting idling funny ...
1992 Subaru SVX LS 3.3L battery VIN: JF1CX3533N
hey guys, received a couple of good tips to repair this car , unfortunately the owner of said vehicle has become a guest of the state and his family has put a hold on any further diag.thanks for the replies though
1998 Subaru Legacy Outback 2.5L Misfire VIN: 4S3BG6853W
This vehichle still has a misfire on #1 cylinders. We are leaning toward needing cylinder heads because of the valve guides moving but are not sure. We've removed transmission to check pressure plate/flywheel alignment-ok. We've also tried crankshaft,cam sens... Trouble codes: P0301 (misfire number one), P0302 (misfire number 2), P0303 (misfire number 3), P0304 (misfire number4).
1999 Subaru Legacy L 2.2L shifter interlock VIN: 4S3BD4356X
This was so simple it was almost imbarressing. We were never able to duplicate the problem but itwas real and the customer was frustrated not being able to drive his car on really cold days. We removed the console applied the brake and watched the solenoid dis...
1996 Toyota Tacoma DLX 3.4L Poor Idle Quality, MIL Lamp on VIN: 4TAWN72N7T
Most people said don't disassemble maf, but if I have to buy a new one anyway, why not try? Others said clean with carb cleaner. Well, yes but this is rodent hair wrapped around the elements which are 3 inches down a 1/2 inch hole. Carb cleaner does not dissol... Trouble codes: P0171.
1998 Toyota Tacoma DLX 2.4L No Start VIN: 4TANL42NOW
hello iatn. want to thank all the techs that helped with this toyota. the fix was replacing fuel pump in tank. the test diagnostic on intake had no wiring for fp. terminal, all the rest were there. ended up with same as any other similar no start, no fuel , or...
1992 Volkswagen Golf 1.8L Excessive Emissions VIN: 3VWFA01G6N
Thanks to all who sent some advice. The problem was indeed bad ground at the thermostat housing. I gave the two wires a tug and it seems it was only holding there by the plastic insulation of the wire. I also learned that the bias voltage is .45volts. I had a ...
1996 Volkswagen Golf GL 2.0L Starting VIN: 3VWFA81H2T
Thanks to all the helpful information folks. Special thanks to Byron and Deborah for some very helpful tips. The problem turned out to be the coil. This car takes a coil with an ignitor in it, the one that was installed did not have with the ignitor. The ignit...
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