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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 14, 2010
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Open Help Requests for All Makes and Models
Help Request Answers
1990 Buick LeSabre 3.8L Poor Idle Quality VIN: 1G4HR54C4L
all computer inputs sem to be in spec. find no vac leaks r&r intake hoping gasket was bad . seemed to be ok. air intake is clean& closed i just have asnapon brick to test with thank you in advance for your help
1997 Chevrolet Blazer LS 4.3L Excessive Emissions, Poor Idle Quality VIN: IGNDT13W5V
All was running great after previous repairs,, just started running rough,, I removed EGR and cleaned pintle area still rough,, I noticed fuel cell value at idle is 17, off idle drops to 2 then progressively goes up with throttle. is this normal at idle FT c...
1999 Chevrolet Express 2500 5.7L No Crank VIN: 1GAGG25RX1
BLOWES 40 AMP IGNITION FUSE INTERMITNLY CAN GO For DAYS WITH OUT BLOWING FUSE. Van is never runing when fuse blowes when customer starts van it blowes. already tried ignition switch still blowes fuse. Tried stater also still came back with fuse burnt.I hope so...
2009 Chevrolet Impala LT 3.5L Air Bag system VIN: 2G1WB57K39
When this car was wrecked, it hit a metal sign post head on, wiped out the Front End Assy...and then sign fell on roof and deck, ruined them. Air bags never deployed (has side curtain bags, seat bags, and front bags), and should have. Rebuilt the car, and the ...
2002 Dodge Dakota 3.9L Electronic VIN: 1B7FL16X72
hi evryone, i need you help with this problem, the customer has replace the ECM because the vehicle wont start, by replacing the ecm hi started the vehicle, bud now code p0748 came out, i checck for good power from the relay, power is good, i have check the re...
2004 Dodge Intrepid SE 2.7L Timing tensioner VIN: 2B3HD46R94
I have the primary tensioner new, due to the old one started rattling after I ran it for a bit. I had just replaced the water pump and head gaskets. I put it all back together and am wondering if the secondary tensioner has a reset like the primary tensioner. ...
2006 Dodge Ram 2500 TRX4 5.9L Compressor VIN: 307LX39C76
DoeS this system require all codes be cleared for system to function properly?
1991 Ford Mustang LX 2.3L MIL Lamp on VIN: 1FACP40M8M
I don't have the capability to monitor O2 sensor. Is there one component that could cause all 3 codes? Trouble codes: 172 (Lack of O2 switches lean), 186 (Injector pulse width higher than expected), 328 (EGR closed valve voltage lower than expected)
1998 Ford Explorer XLT 4.0L Instrument Panel VIN: 1FMZU34EXW
When the vehicle first came into the shop it would only start in neutral. Before we ever touched the vehicle, the owner had done extensive audio modifications. The vehicle came in without the check engine light bulb illuminating. We changed two bulbs in the in...
2002 Ford Mustang GT 4.6L No Start VIN: 1FAFP42X22
Hi Ford techs, I have no power to fuel pump. checked inertia switch . got power there . switch stuck in. the veh. is dented up but don't know when the fuel problem came. I put noid light and no injection pulse width either. hook pump up direct and pump works b...
2002 GMC Envoy SLT 4.2L electric windows, gauges VIN: 1GKDT13S52
We bought this Envoy from an auction, had been there for about a month and battery was totaly dead, took a well charged battery and replaced orignal and car started and ran OK, drove 60 miles home, but we could NOT get the windows down and AC did not work(90 d...
2004 GMC Envoy SLT 4.2L Mechanical VIN: 1GKDT13S64
hi techs,wierd one here.let vehicle sit afew hours,then startup and encoder motor sounds like a vacuum cleaner for 30 sec. or so.truck does move when happening.did have c0327 in history.i installed new encoder motor,still happens.switches in all positionns,tra...
2002 Hyundai Elantra GLS 2.0L compressor VIN: KMHDN55D82
Hey guys I have a 2002 Hyundai elantra. The a/c works great while idling and driving. The problem Im having is the compressor relay losses ground from the pcm when you snap the throttle. The WOT works fine but when you give it gas from idle the a/c cuts out mo...
1994 Jeep Grand Cherokee Laredo 4.0L Cuts out, VIN: 1J4GZ58SOR
what are values at tps , map supposed to be appears all grounds good have 5 volt reference on two wires
1999 Lexus GS300 3.0L Ac VIN: JT8DD68S4X
This car came in with customer complaining about ac compresser coming on and off. We replaced the ac compresser relay and also the ac compresser but the problem is still there. Upon start up the compresser come in working fine then about 50 seconds the ac ligh...
2001 Nissan Quest GLE 3.3L No Start VIN: 4N2ZN15T71
vehicle came in with MIL , code for Evap system purge vol. control valve , my tech followed the diagnosis from Alldata . evap solenoid is defective but the vehicle does not want to start now. We had to remove PCM ,and tested voltage at PCM pins. No pushed pins...
2001 Nissan Sentra XE 1.8L Hesitation, Surge, MIL Lamp on VIN: 3N1CB51D01
origenaly car ran fine untill stalled in trafic,restarted after sitting for 10 min.s check engine light came on after driving home. next day engine cranks over but no start. another shop c/o crank and speedo sensors. now we get car with engine hesitating at cr... Trouble codes: P0171 (fuel system lean bank 1)
2008 Nissan Quest SE 3.5L No Start VIN: 5N1BV28U28
I have a 2008 Nissan quest from the body shop. The van did run when they first bought the car from the auction. They tried to start the car with out the grounds connected and damaged the ECM. I installed a used ECM. I connected the grounds with star washers an... Trouble codes: P1610 (NATS MALFUNCTION-lock mode), P1611 (NATS malfunction ID engine and immobilizor)
1999 Volkswagen Beetle GL 1.9L No Start VIN: 3VWCF21C3Y
after cylinder head repair car was drivin approx 5 or 6 miles. it was started on 3 consecutive days with no problem. no long crank or anything. delievered the car to customer and he drove it [...] miles with more than one stop. the next morning it would not...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1998 Buick Century Custom 3.1L Poor Fuel Economy VIN: 2G4WS52M4W
thanks to all who responded. sorry for the long delay in response to all suggestions. customers daughter wrecked their other car and needed his buick back regaurdless of poor fuel economy. however his gas milage has gone up from 16 mpg to 21mpg(according to cu...
2000 Cadillac Eldorado ETC 4.6L b2471 VIN: 1C6ET1296Y
Thank you for all replys and help. The problem turn out to be there is no power at orange wire, in which is main power to courtesy and many other lighting devices, so there is open circuit right after 10A fuse; added seperated power to the orange wire so that ...
2000 Cadillac DeVille 4.6L hvac VIN: 1GEEH90Y0Y
We have seen low freon charge several times causing this same concern, we had verified the proper amount of freon was in the vehicle, the initial thought was there was a problem with the air delivery. The correction for the concern was a restricted orfice tub...
2000 Chevrolet C3500 7.4L Stall VIN: 1GBKC34J6Y
I put an AC Delco fuel pump in this truck (the one in tank) and it doesn't whine at all any more. Before, at best, it would just be noisy without the pulses, but now it's just plain quiet! It idled outside my shop all day yesterday and never stalled or ran bad...
2004 Chevrolet Tahoe LS 4.8L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1GNEK13V54
First, thanks for all of the great help everyone. This one was an exercise in frustration, for sure. I actually for test purposes switched (with jumpers) the TPS1 and TPS2 circuits with each other on the Throttle body, and the bogus return voltage switche... Trouble codes: P0120 (p2101-), P2101 (p2135-), P2135.
2003 Dodge Ram 2500 5.7L Intermittent mil VIN: 3D7KU26DX3
1995 Ford Ranger XL 2.3L No Start VIN: 1FTCR10A6S
Sorry for the long delay, i wanted to make sure this pile was fixed. thank you all for taking the time to try to help with this. several very good ideas and some that i didn't even think to try. the problem ended up being excessive corrosion in the terminals i...
2002 Honda Accord EX 2.3L Unknown VIN: 1HGCG56652
Thanks for the replies,I should have been more clear about the symptom- shifted into drive the RPMs would not change(or change less than normal)and when the throttle was opened the engine would free rev to about 1200 before the trans dropped into gear and bark...
2001 Hyundai Santa Fe GL 2.7L Rear Camber VIN: KM8SC83D11
Thanks to Stephan, Ty, Mike, Eric, John, and John for the very speedy and great responses. All confirm what I had suspected: Camber IS adjustable by using the eccentrics at the rear. Why rear camber would be listed as non adjustable is beyond me but I don't ge...
2004 Subaru Legacy L 2.5L MIL Lamp on, Limp Mode VIN: 4S3BE62554
The terminology TPS "throttle position sensor" listed in my diagnostic information had me looking at the TPS on the throttle body where I should have been looking at the APPS "accelerator pedal position sensor". This sensor is part of the gas pedal assembly so... Trouble codes: P2138 (TPS ckt D and E rationality).
2002 Volvo S40 1.9L shift VIN: YV1VS29502
customer end up running out of patient and pick up the car next day. If he come back for other repairs, will post a update for the funture. Thank you again.
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