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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 19, 2004
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Open Help Requests for All Makes and Models
Help Request Answers
1995 Cadillac DeVille 4.9L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Poor Fuel Economy VIN: 1G6KD52BXS
Thank You in advance to all that reply. This caddy came in with a bad hesitation sometimes and running very rich. The o2 sensors were fixed rich and would not respond to propane or vacum leak. The injector on time at hot idle was about 5.3-6.0 ms. The LTFT was... Trouble codes: P0052
1996 Chevrolet S10 LS 2.2L Poor Idle Quality VIN: 1GCCS194XT
mil 0172 does come on,followed repair flow charts from alldata with no luck. fuel trim index is -51.8, load 48% components tested: o2, map sensor, iac, injectors, plugs, coils.smoke leak check also comes out fine. whenever cyl 4 is grounded out, the idle impro... Trouble codes: 0172 (fuel trim system rich)
1996 Chevrolet S10 2.2L volt meter VIN: 1GCCS1449T
Hello everybody hope you can help me with this one. Alternator originaly repllace 11-2003, had stopped charging,light on. shortly there after at speed on highway voltage would start to drop intermentently, engine starts missing ang signals slowed down. Pulled ...
2000 Chevrolet Malibu 3.1L Hesitation VIN: IG1ND52J5Y
Help: No codes. starts, idles perfect. When hot "only some times". Slow acceleration, freeway driving, going up a grade NO POWER, even if floored {passing gear} feel,like, low fuel pressuer. Unbolted catalytic converter, still the same condition. Car never ha...
1996 Dodge Caravan LE 3.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2P4GP44R5T
Hi Chrysler techs, just a GM guy with this Chrysler van. It runs very poorly and the light comes on immediatly. He had it to the dealer and they checked both the crank and cam sensors and the cam wheel(?). They think there may be something wrong with the flexp... Trouble codes: 1391 (Intermittant loss of cam or crank sensor pulse)
1997 Dodge Grand Caravan LE 3.3L dash shut down VIN: 2B46P44RXV
Complaint is entire Dash freaked out and shut down once, I watched it do this once, LED's flash bright and dim, some warning lights come on. Also the Audible warning chime went off with no coresponding light or code. Customer said the engiine stumbled once whe... Trouble codes: 37 (ABS System over voltage)
1999 Dodge Ram 2500 Van 5.2L Misfire, MIL Lamp on VIN: 2B4JB25Y5X
Vehicle came in with symptoms of mil lamp on and intermittant misfire/buck at highway speeds checked out codes and tps test were all ok all scan data looks ok. Took on a long test drive unable to duplicate symptoms.returned to cust and 2 days later started aga... Trouble codes: P0203, P0205, P0206, P0207, P0121
2000 Dodge Caravan 3.0L No Start, Surge, Cuts out, Misfire, MIL Lamp on
We had this 2000 3.0L Caravan towed in for a no start. No, or very low fuel pressure. After some quick checks, I banged on the tank, and it sprung to life. Shut it off, and it would not re-start, without banging on the tank again. Current ramping the pump supp... Trouble codes: P0171 (fuel system lean), P0300 (random misfire)
2000 Ford Focus SE 2.0L MIL Lamp on VIN: 1FAFP34P8Y
Came in for a check engine light with no other symtoms, runs fine. Had a P0171 for lean condition, I found the common leaking and deteriorated PCV hose so I replaced it along with the crankcase vent with no noticable improvements in the trim numbers. Long term... Trouble codes: P0171
1986 Honda Civic CRX Si 1.5L No Start VIN: JHMAF5331G
Where does injection pulse come from? Car will start and run a sec. after it has been sitting for a day, but will not start again till after you let it sit for another full day. But then it will not always start and pop either. Have traced wires down and can n...
1993 Honda Civic Si 1.6L Surge VIN: 2HGEH3388P
we have followed the factory tech manual for this car and we still have vac. to the lower port in the intake when the car is warmed up the fast idle valve has been replaced and the idle screw is all the way in and the idle is still to high and will surg up and...
1995 Lada niva/cossack 1.7L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on
This is my wive's car.Engine management system is GM Multec(IEFI-1)It runs very rich,hesitates etc.I have been unable to "talk" to ECU,or to pull any codes(I tried using Bosch KTS,and I tried"manully" to get codes.MIL light is continually on.Spark timing seems...
1993 Lincoln Mark VIII 4.6L convertor VIN: 1LNLM91V4P
Customer complains that vehicle has a shudder like going over rumble strips occurs at 30-35 mph with light throttle. Was wondering if any one has had to deal with this. and was wondering if it could be a solenoid problem.
1995 Mercedes-Benz C220 2.2L srs
srs light on , ast retriever with latest cartrige shows no fault , also does not gives live data cs 3000 gives a code 54 , no description , some live data [6 items ] shows ok . ast 4001d [ little yellow box, antique ] also gives code 54 , also no descriptions ...
2000 Mitsubishi Galant ES 2.4L No Start VIN: 4A3AA46GXY
This vehicle was towed here from another repair shop which failed to diagnose a crank but no start condition symptom. My intial diagnosis reveal the following: Computer not turning on MIL, main relay, and fuel pump relay. No spark and injection pulse was detec...
1997 Plymouth Neon 2.0L water pump VIN: 1P3ES22C8V
I am a GM mechanic. This is my daughter's car. Overheated on the highway, I went out and hauled it in. I have NO access to any type of manual for this car. Local dealer is very unfriendly. Need to find out procedure for repair to decide whether to do it myself...
1995 Pontiac Grand Am SE 3.1L no shift VIN: 1G2NE55M7S
car starts out in fourth gear, will not downshift any time by itself .When you start out in selector range 2 vehicle will start in second and will shift to 3rd when manually upshifted, same with fourth.mt2500 reads solenoids are set for fourth gear .
1992 Saturn SL1 1.9L Clutch Hyds. VIN: 1G8ZG5493N
Have replaced the leaking Master cly. and fitted a new slave cylinder which has no bleed nipple. Have bled the slave by filling with fluid and expelling air, have bled the master cylinder, have pushed the slave push rod fully in whilst connected to the hyd. li...
2004 Toyota highlander 3.3L No Start VIN: JTEDP21A94
Hello Group,This is my own car i'm working on and with it being so new i don't have very much information on it so any help from a Toyota tech would be helpful.I got suckered into buying this toyota that was in a flood and then had a dash fire that was suppose...
1990 Volkswagen Jetta GL 1.8L Hesitation, Stall VIN: WVWRA21G9L
Hi fellow techs, please bear with me as i am not used to writing these e mails. I am doing this for my son in the shop. We have a 1990 jetta and when it is first started cold or hot it will idle erratic and blubber to a stall. When you disconnect the coolant t...
1997 Volkswagen Jetta GL 2.0L No Start, Stall VIN: 3VWRA81H7V
Thanks in advance for all the help. This car ran fine and was parked for a couple of months. When it was driven again it will crank and idle then it studders and dies. If you give it up to half throttle it will accept it for a short period before it dies. If y...
1994 Volvo 940 2.3L middle vents VIN: YV1JW8313R
Hello, this car has suddenly went to (default) air blowing to floor, I have read and fully understand the problems with the vacum pods leaking. I have repaired 960's with Auto. Climate control and many 126 ch. Benzs. I service a lot of 940's and have never see...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1992 Buick Park Avenue 3.8L anti-theft VIN: 1G4CW53L6N
Sorry for the delay, I went on vaccation the day this car was fixed. I had traced it down to the decoder and I tried to post an update when everyone started telling me to ck the key and cylinder but it did not go thru. The cylinder was the first thing that I c...
1963 Chevrolet CORVETTE 327CID oil filter gasket VIN: 30837G1159
At this time I have received 47 replys.Almost all were correct.The oil pressure relief valve was frozen solid in the oil pump.Some techs responded that the relief was in the adapter plate,this is in fact the bypass for a clogged oil filter so that oil will sti...
1991 Chevrolet Corsica LT 2.2L No Start VIN: 1G1LT53G9M
Well I would like to start by saying thank you to the following; Laneard,Keith,Medardo,Phil,Greg,John and Frank. I need to say thank you for two things first their patience, our customer was slow to want to say that everything is O.K. Sometimes that happens, I...
1990 Dodge B350 5.2L No Overdrive VIN: 2B7JB31Y2L
I'd like to start by thanking everyone who replied, especially Bruce [...] who offered to go out of his way to dig up a bulletin. It turns out Bruce was correct in saying the vehicle had the wrong PCM even though the dealer swore up and down that it was the ...
1996 Dodge Caravan ES 3.3L running/park lites VIN: 1B46P45R5T
thanks to all who responded.customer came by friday to say he has not had any trouble since last time in.sopke to him about the info obtained on iatn.to have him remind us to check vehicle at next oil change sometime in july.
1997 Dodge Grand Caravan ES 3.8L moniters VIN: 1B4GP54L5V
thank you for the reply's. well i changed the o2 first. it was lazy anyway. this did get one o2 moniter to set. it was not the o2 heater moniter. sent the van off to the dealer to flash the computer and now all is well. thank you for the quick reply's rich t...
1999 Dodge Intrepid 2.7L Misfire VIN: 2B3046R3XH
i want to thank everyone with there help we found the problem it was the coil boots. they were crack and the spark was going to ground the easy rout ones again thank you for your help everybody.
1970 Ford MUSTANG 5.0L Top VIN: 0F03F16601
Customer finally brought the car back in and thanks to everyone who replied especially Mark [...] who sent me step by step instructions from the Ford manual (check out the replies for the procedure) which worked like a charm. After filling the system and repairing...
1986 Ford Bronco II Eddie Bauer 2.9L No Start VIN: 1FMCU14T9G
hey guys thank you for your help we had a defective pump the new pump was junk we got one from ford and truck fuel pressure good thank you for taking the time to help i know how busy ower life are
1987 Ford Bronco II Eddie Bauer 2.9L Excessive Emissions, Hesitation, Surge, Cuts out, Stall, Poor Fuel Economy VIN: 1FMCU14T6H
thank you for the quick replies-replacing the fuel regulator- repaired the running rich problem-the regulator ruptured-i found out the vehicle had new catalytic converters welded in and they damaged the o2 sensor before the cats-they melted the wiring- we drov...
1995 Ford Windstar GL 3.8L False Temperature guage readings VIN: 2FMDA5147S
well guys customer decided to drive for now, rather than me replacing the guage, but im confident that a new temp guage will fix the problem. they say there gonna bring it back to me in a couple of weeks to replace the guage. if they do bring it back i will po...
1996 Ford Mustang SVT Cobra 4.6L Misfire VIN: 1FALP47V9T
thank you to everyone who responded, this mustang is fixed. vehicle had a bad left coil pack, I replaced coil and runs great. this vehicle was hard to diag. because it never set a code, I could get this thing to missfire under load for one to two minutes at a ...
1996 Jaguar XJS 2+2 4.0L abs pump VIN: SAJNX2748T
This car originally came in for a O2 sensor problem,customer never noticed the brake warning light on.This light comes on intermittently so the customer decided to bring back the vehicle if it became more apparent. I did receive a reply that the solder joint...
1994 Mercedes-Benz S420 4.2L evaporator VIN: WDBGA43E9R
I did replace evaporator after all. It was not that bad, but time consuming. Alldata was very helpfull. Did not have to remove ignition lock. I used evap. with exp. valve made by ACM from Worldpack. The glue or whatever they used to assembly evaporator core pi...
1992 Mercury Grand Marquis GS 4.6L 3-4 shift
well,guess i should have stuck with the basics. guy that installed the trans didnt flush the cooler and ended up with a stuck valve body. if this unit hadnt been electric controlled i would have pulled the v/body very first thing,but i was sure something that ...
1985 Oldsmobile 98 Regency Brougham 3.8L Poor Idle Quality, Hesitation, Misfire VIN: 1G3CW6938F
Thank you for the help guys. Rodney [...] hit the nail on the head. Thank you! This one is fixed. It turned out to be a two part problem, both related to the secondary ignition. It had two posts on the distributor cap that were coroded, and one defective spar...
1994 Subaru Impreza 1.8L Misfire VIN: JF1GC8KD3T
Of the 7 replies 4 related to cam timing. I had previously stripped and checked that all the marks linned up but as two members had pointed out there are more than one mark on the crankshaft sprocket. The information I was using was 'Autodata timing belts' whi...
1999 Toyota Camry CE 2.2L Oil Pressure VIN: 4T1BG22KXX
Well, the car is not back. We checked on the cooler as suggested, there is not a cooler on this one, no check valve behind the filter either. According to 'yota, the pressure port to check at is in head. Although it was lower pressure than we liked to see, it ...
2000 Volkswagen Passat GLS 1.8L Misfire VIN: WVWXA23B5Y
i want to tank to all who took the time to answer me Cary, Gyula, Ted, Rob, Mark, Ivar from Norway, Dewey, David, Glenn and specially to Joshua from Massachusetts who was very interested in my case and John Lutterberger who put me in right direction. As you kn...
2001 Volkswagen Passat GLS 1.8L Hesitation, MIL Lamp on VIN: WWWPD63B01
The customer elected to return this vw to the dealer. All the replies were very helpful, most of them pointed to defective mass air flow sensor and said that vw has had a lot of them go bad. Thanks so much for the help! Trouble codes: P0171.
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