Automotive Technicians Technical Discussion and Fixes for Dec 30, 2005

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	Help Request	Answers
	1995 BMW 525i 2.5L No Start VIN: WBAHD6329S Hello, Thanks to everyone who supports the iATN. Hope the Christmas holiday was restful and a welcome intermission from our day to day. Fellow pulled this vehicle 30 miles to us on a chain. So said that last week, he had a transmission installed. First Unit ...	View
	1998 BMW 740iL 4.4L Poor Idle Quality, MIL Lamp on VIN: WBAGJ8320W vehicle comes back with mil on, scan ecm for codes and find; p1140 maf related problem. hook lab-scope to maf and verify maf signal return volts stuck at 1.2v. replace maf sensor and road test vehicle no mil light. go to restart vehicle and mil light comes bac... Trouble codes: P1140 (maf sensor problem), 05005	View
	2000 BMW 740iL 4.4L Safety VIN: WBAGH834XY Got a code 23 in the SRS. The CS2000 says R/F MRSA. Could someone give me a little more detail information on this code.	View
	1993 Buick Century Special 3.3L High cold idle VIN: 1G4AG54N4P Customer brought us his car with the complaint that on the first start of the day car idles at about 2000rmp for 10 seconds. All data shows OK on the scan tool; but I am concerned with the Block learn--150; Block cell learn--16 Fuel ratio shows 14-8 Not sure w...	View
	2001 Cadillac DeVille 4.6L oil pan VIN: 1G6KD54Y81 Hello, I am repairing an oil leak on this car, & removed the oil pan to replace the gasket and found that the engine has a n aluminum plate between the pan and the engine "lower case" (oem refers to it as an oil distrobution plate) In order to make a solid r...	View
	1993 Chevrolet S10 Blazer Tahoe 4.3L transmission VIN: 1GNDT13W1P Please help. The transmission is losing fluid from somewhere around the input shaft (torque converter). This is the second junkyard transmission with the same problem. Customer doesn't want to spend alot of money, so I'm wondering if there is any way to repair...	View
	1996 Chevrolet Express 2500 5.0L Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: 1GCFG25W3T Hello i have this van that does have a 4.3 in it. im looking for ground g103 alldata list it as being at the alt. it also list g102 as being at the alt. i have hunted this thing up one side and down the other, no luck. they are not there. i have three gounds a...	View
	1997 Chevrolet Express 1500 5.7L Misfire VIN: 1GBFG15R7V Hi to all, this van came in with an intermitant skip in the #5 and #7 cylinders. That's what the computer showed and I verifyed it with a scope. The #5 and #7 spark plugs showed a good deal of ash fouling and the plug wires appeared burned. After replacing bot...	View
	1995 Plymouth Acclaim 3.0L Stall VIN: 1P3AA463XS We have a strange one here. This Acclaim runs fine. The only problem is with the idle. When you pullup to a stop the engine comes to an idle and after about [...] attempts to stall and sometimes will. If it dosen't stall it will idle fine for any lingth of...	View
	1994 Dodge Shadow 2.5L Tempature Gauge VIN: 1B3AP24K6R Vehicle came in with engine temp to hot. Inspected and found blown head gakset and busted head. Replaced clyinder head and gasket, installed new thermostat, and reassambled. Engine temp shows just below the hot mark on gauge but coolant temp at themostat housi...	View
	1995 Dodge Intrepid 3.3L engine VIN: 1B3HD46T9S this car came in w\noise at upper end not getting oil at rocker arms	View
	1995 Ford Taurus SHO 3.0L clutch assem VIN: 1FALP54Y1S this SHO Taurus came in with a bad clutch so we installed a new clutch kit specified for the SHO, with a local machine shop doing a resurface on the original flywheel out of the car. When we tested the clutch on the hoist it worked fine in the forward gears bu...	View
	1997 Ford Taurus GL 3.0L No Start VIN: 1FALP52U4G No spark unless you just bump starter. Wont spark if you just keep cranking. If you just bump starter it will intermittently spark and sometimes actually start. It runs fine after you start it. Checked Power at coil pack it is ok. Checked crank sensor at PCM h...	View
	1997 Ford F-250 XL 5.8L HVAC and engine temp VIN: 1FTHF26H9V We have low heater temp complaint. We replaced the thermostat and flushed the heater core. When the truck is sitting at idle in our shop the engine the engine temp is 190 degrees, the vent temp is 135 degrees. Going down the road the engine temp drops to 165 d...	View
	1998 Ford Windstar 3.0L 3.0L Un-requested downshift VIN: 2FMZA51U2W This vehicle has a code P0732 (incorrect gr2 ratio) stored. The MIL is not on. The customer complaint is "a sudden down shift at highway speeds for no apparent reason. We have not been able to duplicate the problem in our test drives. The fluid is on the mark,...	View
	2000 Ford Focus LX 2.0L no start i have an intermittent no start on this 2000 focus wagon. when the key is turned to the "on" position,and all the gauges max out, then drop back down,it won't start. cycle the key, and if the gauges don't max out,it starts. these are observations of mine and t...	View
	2000 GMC W3500 5.7L Engine VIN: 4KDB4B1R21 This is a Cab chasis medium duty W3500(GMC/Isuzu Cab over truck). The truck came in for exhaust leak. Found the right side manifold cracked and the manifold to pipe donut gasket missing. when the new parts arrived we went to start the truck to pull it in the g...	View
	2002 Infiniti I35 3.5L Stall VIN: JNKDA31A52 Father in laws car stalled out by shop. Towed over no codes present. Crank vech starts ok runs a second or two and stalls out will restart won't stay running. Unplugged maf (mass air flow) sensor, starts ok and stays running. Suggesting to replace. Not in stoc...	View
	2000 Jaguar S-Type 3.0L vents VIN: SAJDA01C0Y To all you great techs and soon to be great techs. we have this jag in and the original complaint was no heat, and no response from servo. we relaced the servo and now have operation of temp selection. goes hot to cold normally on the driver's side, but, stay...	View
	1996 Mercedes-Benz S500 5.0L no heat VIN: WDBGA70EXT Drivers side is slightly warm and passenger side is cold, I have the temp set to HI on both sides, I tried an other control unit and still have the same problems, the duovalve is free flowing, the heater core is not stopped up, thermostat is ok. thanks in adva...	View
	1997 Mercury Mystique GS 2.0L Poor Idle Quality, Surge, MIL Lamp on VIN: 1NELM6530T Last job of the year...I changed the oil,put in a new air filter, and rotate the tires. I started the car and heard the timing belt slaping from up on top. then the car started to surges. The idle motor tries to keep it running. It has three codes for the o2 h... Trouble codes: P0135	View
	1992 Nissan 300ZX 2+2 3.0L climate control panel VIN: JN1RZ26H9N We have no experience with the auto climate control on this car and hope that someone has. The control panel in the dash goes dead and fan stops at random. Its worse after car sits out over night in the cold. When the panel is dead it will light up when the br...	View
	1996 Pontiac Sunfire SE 2.2L No Start VIN: 1G2JB124XT ok car was towed in, crank no start theft light was flashing, had code p1629. theft fuel enable incorect, no signal. so i replaced lock cylinder and sensor. re-learned system car started and ran fine for about one weak. now car wont start at all theft light is...	View
	1993 Subaru Legacy LSi 2.2L Temperature VIN: 4S4BJ65C9P Vehicle runs normal on highway, after coming off highway, temperature gauge goes to hot unless engine is brought off idle. Cooling fan come on and coolant appears to circulate. Originally found radiator plugged and replaced thermostat and hoses at same time. S...	View
	2004 Toyota Tundra SR5 4.7L engine VIN: 5TBBT44144 This truck was run low on oil and we are attempting to install a low mileage used engine. We have access to Mitchell which includes to a lot of information that is very helpful in this repair but we still need a little bit of help. Mitchell On-Demand states to...	View
	1999 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSC29M7X This VW has been to several other shops and now ours, three different scan tools(Mastertech, Brick, code reader) all cannot communicate with vehicle in generic mode. Saw TSB for aftermarket accessories causing this, vehicle has none including factory radio. Po...	View
	2000 Volkswagen Jetta GLS 2.8L pcv VIN: 3VWSE29M1Y Hi Y'all I need some help with this VW. It is putting oil in the intake boot before the throttle body. The car came in one quart over filled with oil. I drained excess oil off and cleaned the intake boot up. Drove car 8 miles and pulled boot off again and oil...	View
	2000 Volvo S80 T6 2.8L S1 shift solenoid VIN: YV1TS90D3Y Will guys I've gotten in a little deep on this one .It came in with the a check engine light on and a message to service transmission . Pulled codes found shift solenoid 1 hydraulic fault . Replaced this solenoid and solenoid 2. They looked the same . Flushed ...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2001 Audi A4 1.8L no power VIN: WAUDC68D41 I want to thank all of you for your help. I had 20 members offer there help. The fix was a crack in the hose that goes from the waste gate to the turbo. The crack was inside the bend in the hose, the hose looked good, I checked it several times. The way that I... Trouble codes: P0171.	20
	1996 Buick Skylark Custom 3.1L Speedometer VIN: 1G4NJ52M9T Thanks to everyone who helped with this one, I repaced the wiring for the radio from a salvage car. speedo works and shifts fine. thanks again.	7
	1996 Buick Century Custom 3.1L Hesitation, Cuts out, Misfire VIN: 1G4AG55M3T Well, we'll call this one fixed, and thanks to all who took time out of your busy days to help!! The problem has not, even in the least returned since cleaning the maf yesterday. The customer opted to take the car, we'll worry about the fuel trim next week, by...	17
	1999 Buick Park Avenue Ultra 3.8L abs light on VIN: 1G4CU5216X thanks to all who replied!! i did go back and spend some more time looking at the wiring and still did not find any problems with it. i reconnected everything after it sat over night and the light stayed off and everything was ok. i still dont know exactly wha...	9
	1999 Chevrolet C3500 7.4L Excessive Emissions VIN: 1GCDC5TTTV This one is done and gone, putting the cats on really cleaned it up nicely hc and co were very low. But I am still unsure of the injector current pattern. I know what good ones look like but have not been able to find this pattern in the iatn waveform library.... Trouble codes: P0125, P0338, P0175, P1153.	10
	2000 Chevrolet Silverado 1500 5.3L Surge, Chuggle VIN: 1GCEK19T1Y We have determined that this vehicle does have an internal trans. problem. We do not perform trans. repairs here. I sent vehicle back to dealer for repair. If I recieve any more info on this vehicle I will post it. Thank you for the 8 replies, it always keeps ...	8
	2002 Chrysler Town & Country LXi 3.8L Stall VIN: 2C4GP54L72 we replaced the SKIM module[smart key immobilizer module] and reprogramed the keys, it's been ten days and no problem, so I will call it fixed! thanks for all the help! Jeff	3
	1988 Dodge Aries LE 2.2L Head gasket VIN: 1B3BD46D7J Post should read 'Timing belt walking forward'. Tried different idler pulley with tighter bearing and it did not help. Shimmed behind tensioner to tip pulley in slightly and it started tracking. Seems ok for now. We suspect the head is warped some but not goin...	14
	1993 Dodge Intrepid 3.3L Excessive Emissions VIN: 2B3ED4GTIP I want to thank everyone for all the replies and apologize for the late post. I don't know what happened, but I started it up a few days ago and the left bank 02 started working and stayed that way. I'm not sure if the computer has to go through a relearn for ... Trouble codes: 21 (02 sensor lean).	10
	1997 Ford Explorer Sport 4.0L computer VIN: 1FMCU22XXV My regular scanner is OTC 2000 enhance and the soft ware used was 1999 and 1997 both ford and OBD II. I also tried a snap on with no change. What I found was the o2 sensors are working. I got a voltage from my volt meter that was switching. The computer is wor...	13
	1997 Ford Explorer XLT 5.0L Unknown VIN: 1FMDUS5P7V sorry for the long delay found the cv joint for the front driveshaft causing problem - replaced shaft and all is well - thanks	10
	1997 Ford F-150 4.2L Mechanical VIN: 1FTDF1720V Well IATN has done it again :)) thanks to all that responded it was in fact the cam synchronizer (dealer has 12 in stock at all times). Removed the old one and sure enough blown out. Installed new one without special tool just made sure that I marked everythin...	20
	1999 Ford F-150 XL 4.2L Poor Idle Quality, Hesitation, Cuts out, MIL Lamp on VIN: 1FTZF0724X Sorry took so long to post the fix but yes it is fixed, the vacuum lines feeding the IMRCs and EGR Valve and solonoid were damaged. IMRCs open as they should. Thanks everyone. Trouble codes: 1537 (IMRC Bank One Stuck Open), 447 (Evap Code).	6
	1999 Ford F-250 Super Duty XL 7.3L Drive-axles VIN: 1FTNW21FXE I removed the right bearing since I was told the noise could travel and sound like it was on the left. I saw nothing wrong and like I advised before we swapped the bearing around between the sides and changed nothing. This time since removing the bearing and c...	13
	1999 Ford F-150 4.2L Hesitation, Misfire VIN: 1FTZ1729XK Thanks again guys for our advice we found crank balancer and key way worn out Trouble codes: P0171, P0174, P1518.	9
	2000 Ford F-250 Super Duty XL 7.3L lack of power VIN: 1FTNW20FOY hey yall thanks for everyones help as far as i can tell the fix would have been the fuel pump i hooked my vantage to the truck and drove it when i saw the fuel press drop to as low as 9 psi i couldent believe it was still runnin unfortunatly the customer decli... Trouble codes: P1211 (injector controler pressure higher/lower than normal).	19
	2002 Ford F-150 XL 4.2L MIL Lamp on VIN: 2FTRX17292 We are still waiting for the vehicle to come back in, but I am leaning toward the O2 sensor as some replies suggested.We changed the O2 in an Explorer with similar condition, but haven't been able to contact the customer to verify the condition did not return. Trouble codes: P0174.	16
	2003 Ford E-250 4.2L Hesitation, Misfire VIN: 1FTNE242X3 we replaced the coil pack and all is well sorry for the lack of info on initial help request.we had done all the basicshad good compression,good fuel pressure,and through all of your help we tried the egr valve trick, and even pulled both o2 sensors to check f... Trouble codes: P0316, P0030.	10
	1999 GMC Savana 2500 4.3L No Start VIN: 1GTFG25W3X ignition and electronics all check out, when i did fuel pressure test I had 70 at rail and 45 6 hours later.Later fuel pressure test I had 5 lbs and lots of flow. 70 lbs pressure at the fuel filter Pulled out spider,everthing dry, no washing. Contacted Linder ...	23
	1986 Honda Accord LXi 2.0L No Start VIN: JHMBA7444G Thanks all you guys! this car has so many miles all the engine wiring is crispy! could have been anything you guys mentioned! ended up... It was the coolant sensor, was throwing me for a loop it was ok sometimes and open sometimes,and I suspect shorted som...	20
	1990 Honda Civic 1.5L Will not shift VIN: 1HGED3LL02 Thanks for the replies. Turns out the ecm was fried. Couldn't really see anything visible tho. Repalced ECM and all is well Thanks again you guy's.	5
	1992 Honda Civic VX 1.5L Excessive Emissions VIN: 2HGEH2362N Thanks to all the good advice, I am certain this thing is not going in to closed loop. Hondas need proper input from the MAP sensor, TPS, and O2 sensor. I will get my pin-out chart for the ECM and fix this thing.	10
	1992 Honda Accord EX 2.2L Unknown VIN: JHMCB7657P Thanks to all who responds my mail. All of you said to O/H tranny. The customer wants to replace with low milage used japs tranny and it solved the problem. Thanks again very much. Charles.	13
	2000 Hummer H1 6.5L slips out of overdrive VIN: 137ZA8432Y we replaced the tcc solenoid and a sonax valve kit the check engine lite stays off now but still falls out of od the customer is bringing the car back after new years thanx for all the replies	5
	2001 Isuzu Rodeo LS 3.2L Cuts out, Stall VIN: 4S2CK58W41 Thanks to all who responded. What we have determined is the throttle motor is bad. We have parts on order and will post more after we get the part and confirm that it fixed it. Thanks again	5
	2000 Lincoln Town Car Signature 4.6L Stall VIN: 1LNHM82W6Y I have to thank everyone of you that confirmed my diagnosis of this vehicle. I sent this request out about 10:00 am Thursday morning, received three replies buy 11:00 am, tested the iac % which was 69%, too high, thanks to Jeff [...] for the info, ordered th...	16
	2000 Mitsubishi Galant ES 2.4L No heat VIN: 4A3AA46G7Y Well I bit the bullit and replaced the heater core, now heat stays at Idle and while driving. Still a very slight drop in heat at idle, probably about 5 degrees. I'm happy, Customer is happy. Thanks for the replies.	12
	1992 Oldsmobile Custom Cruiser 5.7L Excessive Emissions VIN: 1G3BP8373N This morning with a clear head and a little insight from some IATN members I went back to work on this problem,Thanks to Doug Carrol I was reminded that the effected circuit comes from a QUAD driver,and also that he thought the vehicle had to see a speed senso... Trouble codes: 32 (EGR system error stored but did not have check engine light oncode has been cleared and has not reset as of yet.).	4
	1992 Pontiac Sunbird SE 2.0L rr wheel VIN: 1G2JB34H5N I ended up replacing the brake shoes in the rear with a/c delco shoes, the problem never showed up again, thank you very much for your help	21
	1992 Pontiac Grand Am SE 3.3L Poor Idle Quality, Surge, MIL Lamp on VIN: 1G2NE14N3C Thanks to all who replied. I replaced the 2nd gear switch (OEM)and it took care of the DTC 26,27(rember i have already replaced the TCC with an OEM part). Maybe due to the common ground in the wireing harness ,was what made these two codes related? As to the s... Trouble codes: DTC, 26 (QDM failure), DTC27.	6
	1997 Pontiac Firebird Formula 5.7L speedometer VIN: 2G2FV22P8V Well, we still could not ever duplicate the problem. Checked for the speed sensor connector having a problem while vehicle running in the air with Vantage backprobed into the VSS wires at the PCM and couldn't make it act up. One suggestion to run new wires t...	7
	1998 Pontiac Grand Am SE 2.4L engine lubrication just today i put this wreck back together. before i put the oil pump back i removed the oil filter and the oil pressure sender and forced air through the oil passages both ways. after reassembly i measured the oil pressure and it was 65psi@idle and at 3000 it ...	11
	1999 Pontiac Sunfire SE 2.2L Hard Starting VIN: 1G2JB5245X I am going to post this one as a fix. I first replaced the fuel pressure regulator in hopes that this was the problem. I did not fix it. I then replaced the TPS and it has started the most times without causing the problem. I also purged the fuel system just t...	14
	1991 Toyota Camry 2.0L fluid reservoir VIN: 4T1SV24E7M Numerous replies pointed to a plugged reservoir screen. I had backflushed it with solvent, but I guess that doesn't work. [...] suggested poking a hole in it. That worked, so it will be getting a new reservoir. Thanks for the help.	11
	2001 Volkswagen Jetta GLS 2.0L MIL Lamp on, P1143 VIN: 3VWSB69M41 I need to thank all those VW techs, i fixed this problem by replacing the maf sensor again. the dealer sold us the wrong part number the first time. when ordering mafs you need to tell them the engine code(i.e. AEG or AZG). Thanks every one. Trouble codes: P1143 (load calc. cross check upper limit exceeded).	8
	1998 Volvo S70 T5 2.3L No Start, long crank time VIN: YV1LS5377W we sent the car to the local dealer they confirmed what we thought, that the ecm had a proublem but they would not try one of there computers and if they tried it, it was ours . So we sent the ecm to have it tested and repaired at a specialty shop. It has been...	3

(Also Available: All, Asian, Chrysler, European, Ford, GM.)