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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 1, 2005
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Open Help Requests for All Makes and Models
Help Request Answers
1993 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality, Poor Fuel Economy VIN: K4P1154896
when engine is worm or cold.the engine lacks power.the convertor was removed for testing.the timing is set at 0 deg.no cel.on.replaced dist.cap.wires.rotor.timing gears and chain.
1994 Chevrolet C3500 7.4L Misfire VIN: 1GBJC34N5R
This Chevy Truck fries the number 1 spark plug wire right off within one day! I realize that the cylinder is getting too hot, but does anyone have any ideas why? The ign. timing is good, no vac. leaks, and I put in a cooler thermostat. ( 180 deg.) Thanks in ad...
1996 Chevrolet Astro 4.3L Hesitation, Cuts out VIN: 1GNDM19W6T
Vehicle runs great, drives excellent, except when you floor it, it boggs down, backfires, and eventually picks up. This isnt the first time ive encountered this problem, but the last vehicle i didnt get a chance to fix. All sensors test out good, fuel pressure...
2000 Chevrolet S10 2.2L Hesitation, Cuts out, Misfire VIN: 1GCCS1952Y
Hello everyone. This one is staying over the weekend, and maybe I can get a few fresh ideas Monday morning from all you super techs. 2000 chevy S10 2wd pickup truck. 5 speeed manual trans. Replaced tps due to code p0122. Truck runs fine except for under heavy ... Trouble codes: P0122 (tps), P0463
2001 Chevrolet Monte Carlo LS 3.4L traction control VIN: 2G1WW12ES1
hi fellow members. have a very intermittant problem here. customer states that @ twice a month he will put the car in drive and attempt to take off, but traction lite comes on and vehicle wont accelerate. if he puts it back in park or sometimes just lets off t...
2000 Chrysler Sebring JXi 2.5L No Start VIN: 3C3EL55H4Y
vehicle towed in no start no spark injector pulses good performed all wiring tests,good grounds, actuating coil with genisys no spark from coil tower, asd relay functions proper 8 volt reference pcm signal from coil driver present. Diagnosed as bad coil/distri...
1998 Dodge Ram 3500 5.9L Power dropsout VIN: 1B7MC3362W
Vehicle drove in with complaint of power loss in 3rd gear and up. Customer states Vacuum pump was leaking oil, he seperated P/S pump from vacuum pump and replaced seal in vacuum pump. Never removed vacuum pump from engine. Next trip out would not pull hills wi... Trouble codes: P1690 (INJ CKP disagrees with ECM CKP), P0500 (Speed circuit A Fault), P1693 (Companion DTC set in ECM), 84 (RWAL mismatched VIN), 35 (Rear sens circuit Fail)
2003 Dodge Grand Caravan Sport 3.3L P/S Pump VIN: 2D4GP44363
This caravan makes the whining noise you would hear when turning the wheels as if the power steering fluid was low. The problem is, the fluid is full. Customer states that it does it in the morning, and after driven a bit, the noise goes away. When he brought ...
1998 GMC Savana 1500 4.3L Unknown VIN: 1GND23W345
when engine is cold and vehicle runs fine, and in steep hills and when vehicle under full load at initial pickup speed if i accelerate pinging noise i observe if i release accelerator pedal noise will be not heard but if press acclerator pedal noise look like ...
1989 Honda Civic 1.5L cylinder head VIN: 2HGED6304K
After finding burnt valve in # 3 cylinder, removed head for rebuild. Nothing unusual about rebuild, pressure tested fine, new guides and seals etc. Re-installed head on vehicle, proper head bolt torque procedure adhered to. Vehicle now smokes excessively. Took...
2000 Mercedes-Benz E320 4Matic 3.2L MIL Lamp on VIN: WDBJF82G1Y
Hey guys, I have P0170 and P0173. From what I've been reading MAF is the most common cause of these codes. I checked my MAP, the readings are normal. I checked MAF voltages, idle is 1.43 volts (good according to my Vantage Pro), but at 2500 rpm, the voltage i... Trouble codes: P0170 (Fuel Trim Bank 1), P0173 (Fuel Trim Bank 2), P0161 (O2 sensor Htr Ckt Bank2 Sensor 2)
1996 Nissan Altima SE 2.4L Poor Idle Quality, Lean Mixture
The ECM has no codes. The O2 sensor runs lean (40mV at idle and no switching is seen. When the accelerator is depressed the O2 response is normal and switching can be seen. The Idle Air control signal is not what is expected we scoped it with the MODIS. The MO...
1997 Nissan Altima GLE 2.4L # 1cylinder VIN: 1N4BU31D0V
after road testing for abot 30 miles we felt the customers conern, remove the spark plugs found the number 1 spark plug and cylinder black with carbon and top of piston wet with what looks like oil and or fuel, test ign system all tested good, compression is g...
2001 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3HN86R61
This toy Came in with p1127 and p1300, Testing 1127 seems pretty staight forward on MOD, check ETCS fuse then check for power to connector e14 terminal 8, I have both, thus, replace ECM? can it be that simple? I went ahead and checked the grounds and power fee... Trouble codes: P1127 (ETCS Power Source Circuit), P1300 (Igniter Circuit)

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1997 Chevrolet Blazer 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNDT13WXV
found in my scanner the ability to run an injector balance test. all injectors tested good.(no sticking poppets). egr valve not sticking. the kicker was when i happened to go back and look at the missfire counter and noticed that # 3 cylinder had more than tri... Trouble codes: P0300 (random missfire), P1133 (o2 insufficient switching b1s1), P0147 (o2 heater ckt b1s3).
2003 Chevrolet Venture LS 3.4L interior lights
I recieved 2 replies regaurding this matter. However, both suggested there was a loose ground or high resistance. After talking to a buddy of mine who works at a chevy dealer I found this vehicle had been at the dealer for a wiring problem. The dealer had done...
1999 Chrysler Concorde LX 2.7L MIL Lamp on VIN: 2C3HD46R9X
thanks for all the info,especially peter. after taking to dealer in desperation,they said that the car needed the right convertor and 02 sensors replaced,and there might be other problems. That didn't make sense because both banks were rich and there was no po... Trouble codes: P0172.
2000 Chrysler Cirrus LXi 2.5L No Start VIN: 1C3EJ56H5Y
Found problem. It was the crankshaft sensor. Thanks to everyone for the help. Went to take sensor out & it is stuck in housing. Tried about everything to get out, but now its pull transmission time. Nothing has been easy on this car. Thanks again to everyone t...
1998 Dodge Neon R/T 2.0L engine VIN: 1B3ES42Y2W
Hello, I had several different replies, which is why iatn is great. It appears that the oil is coming from the rear main area and oil is running along the pan rail. After lettting them drive the vehicle for a week it came back in and was wet in the front by th...
1998 Dodge Neon R/T 2.0L pinging VIN: 1B3ES47C8W
thanks very much for everyones help. one thing i forgot to mention was that i did change plugs from ngk to the original champion number, this made no difference. just to verify egr operation, as i checked many times to verify, the vehicle must be moving in ord...
1998 Ford Mustang SVT Cobra 4.6L high idle on decel VIN: 1FAFP47V9W
For those wanting the quick answer, it was a re-flash. If you're interested in details, please read on... Hello all, and thank you for the twelve members who responded. It should be noted that I indicated all other PIDs were good and LTFT was perfect. This...
2000 Ford Ranger XL 3.0L Poor Idle Quality, Misfire VIN: 1FTZR15V7Y
most suggested that i current ramp #6 injector circut,but i haven,t bought a scope yet so i had no good way to test it. so anyway i replaced #6 six injector with a new oem injector which was the same as what i put in #1. the customer put 800 miles on it and #3...
1995 Honda Accord LX 2.2L Misfire VIN: 1HGCD7230S
Sorry all, this one was an over sight,firing order wrong,I guess when the valve cover o-rings were done the firing order was put as v-tec,Thank for all the help.
1999 Jeep Cherokee Sport 4.0L No Start VIN: 1J4FF68S0X
hello techs, I'm embarassed to say that it was the weak battery.Dylan from south Africa said to make sure good voltage. What threw me off was the owner claimed it was smoking, I thought there must be short somewhere and another thing I had a jumper pack hooked... Trouble codes: P1694.
2002 Jeep Wrangler X 4.0L Rear Main Seal VIN: 1J4FA39S12
Thanks for the reply's. After replaceing the rear main seal again we still had leak. Pulled transmission to see exactly where leak was coming from and found the camshaft galley plug about to fall out resealed and tightened plug all ok.
1992 Lincoln Continental Signature 3.8L Poor Idle Quality, Stall VIN: 1LNLM9842N
Thanks To All , Special Thanks To Tina from Tennessee You Hit It Right On, The wiring Harness feeds Injector#1 was Chewd Up & Hitting The Ground, repair The Wire & That took care of the problem.
1985 Mercedes-Benz 300D 3.0L Sun Roof VIN: WDBAB33C8F
This one is fixed! Many thanks to all who replied. All were professional and had great information. The general consensus was that this sunroof on this particular vehicle doesn't give much trouble, and is fairly easy to service or repair if necessary. Most ind...
1998 Nissan Sentra 1.6L MIL Lamp on VIN: IN4AB41D9W
thank you for the replies.we think that the gas tank is plugged up with the charcoal from the old canister.we looked at a used gas tank and it was the same way,air will not come out of the hose to the vent valve\canister.we priced a new gas tank to the custome... Trouble codes: P1446 (evap presure sensor problem).
1997 Pontiac Grand Prix SE 3.8L MIL Lamp on VIN: 1G2WJ52K9V
Hello everyone I thought I had closed this thing but I guess not. The fix for this was installing a jumper harness on the air bag module as per a tsb. as for the evap code I found the wires on top of the tank for the sender the connector was corroded I cleaned... Trouble codes: P0441, B1015 (no description).
1993 Toyota 4Runner SR5 3.0L Engine Idle VIN: JT3VN39WZP
Pardon the long closing time. I just finished this this evening. I thought I had hit a home run when I found a split in the air inlet boot at the throttle body. Imagine my disappointment when it didn't make any difference. I finally broke down and yanked the i...
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