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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 2, 2008
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Open Help Requests for All Makes and Models
Help Request Answers
2001 BMW 740iL 4.4L heater case? VIN: WBAGH83421
hi everyone. i have this bmw that when you have in on heat on the heater control head, it will start blow really hot and then start blowing cold air from only the center vents. i have checked for codes, using the pc retervier and i get a code 64 my alldata doe...
2001 BMW Z3 Roadster 2.5L Radio VIN: WBACN33421
I have removed the radio to repair the heater controls and been informed that the customer does not have the owners manual or the radio code. He bought this car used. I made a number of calls to the dealer that I use and they told me to get the serial number o...
2005 Chevrolet Impala 3.4L Drive-axles VIN: 2G1WF52E35
as dumb as this may sound i can not find the torque for front wheel bearings.and of course 4 parts suppliers are worthless.and another thing,why are these bearings junk?i have seen many gm cars and dodge dakotas eat these up every 25000 miles .and yes we do to...
2006 Chevrolet Silverado 1500 LT 5.3L Controller VIN: 2GCEC19Z66
Well this is what I get for trying to cheat. I have an 06 silverado that did not come with TPMS and I want it for all the interstate travel that I do. By brother works for cadillac and lent be the tech 2. He claims you can go into the tpms menu under chassis a...
1996 Ford Windstar GL 3.8L Poor Idle Quality, Surge, Misfire VIN: 2FMDA5142T
starts and runs fine. after its hot and sits for about 10 min restart and it is running rough. it acts light heavy miss. hit the gas and it will clear up after a few seconds. fuel pressure is good, no injector leaks, good compressiion. if it runs ok after a so... Trouble codes: P0171 (lean), P0174 (lead)
1998 Ford Explorer Sport 4.0L MIL Lamp on, po171 po174 VIN: 1FMYU22E0W
hello this is the explorer from hell. Came in with po171 & po174, smoked and found intake gaskets leaking. Replaced upper and lower plenum gaskets. Problem still persists. maf reading is okay. At idle shorterm=3% longterm=2%. of idle and while driving shortter... Trouble codes: P0171, P0174
1998 Ford Taurus SE 3.0L Cam Sync VIN: 1FAFP52U2W
Removed heads for valve job to fix misfire. Has had an intermittent code for CMP although the sensor was replaced with no change (sync shaft not replaced or removed). I have replaced sync shaft assemblies before, but I just marked everything and transfered the... Trouble codes: P0340 (Camshaft Position Sensor Circuit Malfunction)
1999 Ford Ranger XL 3.0L Misfire VIN: 1FTYR14V9X
Have one that is running on three cylinders, codes stored for misfire cylinder 4,5 and 6. All on drivers side of engine. Tried new coil pack with no luck, checked for spark on all three cylinders and spark looked the same as cylinders that are firing correctly... Trouble codes: P0305 (misfire bank five), P0304 (misfire bank four), P0306 (misfire bank six)
2004 Mazda Tribute LX 3.0L No Start VIN: 4E2YZ04104
now i get to checking and i find it is flooded again REALLY bad. clean off plugs and it will try to hit for a second but then it dies. and within thirty seconds of cranking the plugs are dripping with fuel. decided to pull fuel rail to check for injector leaka...
1995 Mercedes-Benz C220 2.2L Hesitation, Surge, MIL Lamp on VIN: WDBHA22E7S
Vehicle bucks and jerks on light accel, bogs down while driving. The above mentioned codes have been addressed in previous posts, but I have another concern here. The datastream readings on this vehicle are false...for example intake air temp is -79, coolant t... Trouble codes: P0505, P0411, P1170
1995 Mercedes-Benz E320 3.2L Stall, MIL Lamp on VIN: WDBEA66E3S
vehicle cam in for check engine light on ,check code and has tons of codes,clear codes install new fuel filter and air filter,gone pass the smog and happy.next day called and towed car in for above problem,no power and starting poblem.checl all wiring top engi... Trouble codes: 99 (fuel safety shut off Recocnized), 104 (No can communication with EFP and TPM)
2003 Mercedes-Benz S600 5.5L Misfire
havent posted here for awhile but i have this v12 that when it is idling the missfire counter on the star shows figures from 3to 4 right up to 85 only on cyl no 6. dealer has installed new plugs, insulators ,they also allegedly replaced coil but removed it aga...
1996 Nissan 200SX SE-R 2.0L No Start, hard starting VIN: 1N4BB42D2T
hey guys could really use some help here.96 200sx se-r,came in hard to start in mornings.originally had tps low code found sensor unplugged.i have been driving this car for customer about 1 week now,had been sitting for months wanted to see what some drive tim...
1995 Oldsmobile 98 Regency Elite 3.8L No Start VIN: 1G3CX52K5S
I'm at my wit's end on this one. This car was sitting for 2.5 years with a bad transmission. We towed it in with a rough running engine. Some mouse wiring damage not affecting the ignition/fuel control systems. We replaced the transmission and when we started ...
1989 Pontiac Firebird 2.8L Excessive Emissions, MIL Lamp on VIN: 1G2FS21S7K
Starts good,runs great until it goes into closed loop.Thats when both long&short term fuel trims will drop from 126 to 100.Light comes on,sets code 45,system goes back into open loop&the whole process starts all over again.Don't know why,but vehicle also has a... Trouble codes: 45 (system rich)
1997 Pontiac Sunfire GT 2.4L Hesitation, Cuts out, Misfire VIN: 1G2JD12TXV
Here goes nothing, again. Little 97 Sunfire GT, 2.4 L, with a maual 5 speed. Boss' kids car. Arrgh. Started complaining of a heavy misfire after upshifting coming off the expressway. He was effectively lugging the engine and the result was a misfire that felt ...
1999 Pontiac Grand Prix GTP 3.8L Transmittion VIN: 1G2WR5216X
Chech engine light on
1992 Toyota Pickup DLX 2.4L Cuts out, Misfire VIN: 4TARN01P4N
hello have no hair left-this truck came to me driving-still drives. however-severe misfires under load at any speed,any temp, rain or shine.customer had another shop install motor,all related ignition parts are new including reman distributor,we checked all gr...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2000 Ford F-250 Super Duty Lariat 7.3L Mechanical VIN: 1FTNW20F8Y
I want to thank all of you that replied to my request on this 7.3 liter. I replaced the valve cover gasket/wiring harness conector and I replace the under the valve cover wiring harness. I also cleaned out the exhaust pressure port and all is well. I re-ran...
2004 Ford F-150 Heritage XL 4.6L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 2FTRF17WX4
Well first of all thank you to all of you who took the time to reply to my dilemma. After switching coils to several different cylinders and not giving the vehicle a full drive cycle and I guess not clearing the codes properly . We finally found the problem... Trouble codes: P0307 (cyl missfire on number 7).
2001 GMC Sierra 2500 HD SL 8.1L MIL Lamp on, Reduced Engine Power VIN: 1GTHK23G11
As I mentioned, this was a job that a fellow tech was having problems with. As many suggested the ground circuit was checked and was working fine. The wires going to the throttle body area also did not prove to have any problems and the throttle plate was alre... Trouble codes: P1515 (Commanded Actual Throttle Positions Out of Range).
2006 Hummer H2 6.0L Hesitation, Surge, Poor Fuel Economy VIN: 5GRGN23466
Thank you William from Texas . Did wiggle test at wiring harness that runs down both valve covers that feeds injectors & coils found on the scanner that the # 8 would misfire and #7 when the connection on 8 would be wiggled for every misfire cycle #8 would ... Trouble codes: U0107 (lost comm with throttle actuator), P0200 (injector control circuit), P0300 (engine misfire drtected), P1626 (theft deterrent enable signal not received).
1996 Jaguar XK8 4.0L key fobs/remote locking VIN: SAJJGAED3A
Well, the car still has the problem, and i have not got any further. The 3 replies i had were not very helpful, 1 suggested disconecting the battery and shorting the wires together, I assume this would ensure all the modules were hard reset, but as the battery...
1980 Jeep CJ7 4.2L crankcase vent hose VIN: J0M93AC027
I'm closing this so not to forget.I'm going to pull motor next week, to go for the rebuild. After moving the piston to other positions it has too much leakage and he wants a good ride.I've learned to do leak down tests on all tune ups and engine diagnosis.
1981 Other European ? 174CID No Start VIN: SCEDT26T6B
Thanks for all the responses about the starting problem. I tested all the basics, control pressures, cold start injector operation, vacuuum leaks, air-flow meter position, etc. Ended up replaceing the warm-up regulator, adjusting the base CO setting up a littl...
2001 Toyota Sienna LE 3.0L Hard Start dies Idle VIN: 4T3ZF13C11
Just FYI : IAC solenoids NEVER give codes !. Replaced IAC solenoid , Problem fixed .
2001 Toyota Echo 1.5L hard to accelerate
2007 Toyota Tacoma 4.0L Mechanical VIN: 5TELU42N17
Took vehicle to dealer they installed new rotors and greased contact points, they said they was unaware of the TSB on this vehicle. Truck now quiet. Thanks to all that replied.
1993 Volvo 850 GLT 2.4L No Engine power VIN: YV1LS5502P
Thanks to all who replied, the customer does not want to fix the car. So we may never know what was causing the problem. I still think it was a bent or broken flexplate messing up the crank sensor signal to the ECM.
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