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Prev Professional Automotive Repair Technical Discussions for March 25, 2014
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Open Help Requests for All Makes and Models
Help Request Answers
2005 Audi S4 4.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAUPL68E35
HI, I have this S4 in the shop that is running very rough. Check engine is on and it is throwing misfire codes on cylinders 1234. ( right bank ). I verified that there is spark and fuel, and there is compression at about 130psi on all right cylinders. I read a...
1996 BMW 328i 2.8L Poor Idle Quality, Surge VIN: WBACD4328T
Car came in with surging and very high idle. Trans was in limp mode. CEL and trans light were on. Customer replaced idle control motor to try and fix this problem, then brought it here when it didn't work. After clearing codes and all adaptations, the car will... Trouble codes: P1188 (227 - Mixture deviation cyl 1-3), P1189 (228 - Mixture deviation cyl 4-6), P0121 (012 - Throttle valve potentiometer), P1765 (154 - CAN gas pedal position EGS)
1998 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality VIN: 2GCEK19R0W
working on my personal truck at home,missfire at idle,driving seems fine,i have a good parts truck,changed plugs wires,cap,injector asy.,un hooked o2 sensors.compression is 140lbs,60-70 running,have injector pulse,now have a vacuum leak at top of intake around... Trouble codes: P0306
2002 Chevrolet Silverado 3500 LS 6.6L Fuel gauge VIN: 1GBJC34142
Fuel gauge on cluster passed sweep test and low fuel lightan no cluster codes. But only goes to one peg over 1/2 way up. Works good on sender set at 1/2 tank or lower. PCM and instrument cluster only reading from 6 to 60 % fuel level even with sender at full f...
2005 Chevrolet Suburban 1500 LT 5.3L auxiliary control VIN: 3GNEC16Z95
When this truck was in Boston, the customer had a dvd / entertainment module installed where the rear HVAC auxiliary control goes. Now they live in Texas & need all the AC they can get, but the rear doesn't work, even with the driver controls for it. My quest...
2008 Chevrolet Express 2500 4.8L No Start VIN: 1GCGG25C48
Ok i am scratching my head on this one. I have a chevy van came in on hook died and no start. started with checking fuel pressure and had none back at tank. so i dropped tank and put power to pump and got 50 psi pressure. I reinstalled the tank and tried to st...
1997 Chrysler Concorde LX 3.5L blower VIN: 2C3HD56F1V
we have repeat problem of blower motor staying on we put new blower resister in and it will work then it will fail again. I checked amp on blower motor and it is 13amps on high I was told you could have up to 18 amps .
2005 Chrysler Town & Country 3.3L MIL Lamp on VIN: 1C4GP45R25
This van has got me pulling my hair out. Ok we have a p0016 code . the history is we replaced the flywheel due to van was barely running crank/cam difference was around -27 degrees . Replaced the fly wheel and the thing keeps popping a p0016 cam syc code. runs... Trouble codes: P0016
2007 Chrysler 300 Limited 3.5L No Start VIN: 2C3KA53G37
Hi this car cranks ok no spark at any coils has injector pulse, asd voltage at coils ,crank signal is present at ecm all data looks good thanks for any help
2003 Dodge Neon SXT 2.0L exhaust glows red VIN: 1B3ES56C93
Hello and thanks for helping with this. This car came in on wrecker and was a no start. The reason was the timing belt had broken. We slipped a new one on but engine still would not start. We checked compression and concluded that it had bent valves so we rem... Trouble codes: P0344 (Cam sensor signal intermit.)
2005 Dodge Ram 3500 SLT 5.9L 1-2 shift VIN: 3D7MS48C15
Greetings ladies and gentlemen: Customer's concern is that there is a large delay shifting from first to second; was afraid to drive on freeway. States that when cold it doesn't shift at all (1-2) until it warms up a bit. Drove customer home and verified del...
2001 Ford Expedition XLT 5.4L Cooling Systems VIN: 1FMRU15L51
Hello Ford Techs Temp Gauge Not Working I look for coolant temp sensor but alldata only show cylinder head temp sensor, I could not locate where temp sensor or hide somewhere.All Techs out there know where is it please reply to me,Thank You very much.
2002 Ford Explorer XLT 4.6L Shift Selector VIN: 1FMZU73WX2
This vehicel has a code p0705. Trans selector switch circuit malfunction. It also has a unusual, repeatable condition. When in reverse, it goes into reverse gear and pulls, then into neutral, then back repeatedly at about 3 second intervals. Wtih a scanner we ...
2004 Ford F-250 Super Duty Harley-Davidson Edition 6.0L turbo VIN: 1FTNW21P74
I am having problems with the y pipe sealing to the turbo. I have tried different way to mate them but still has a leak. Both the turbo and y pipe are new from ford. Any ideas, could it be the clamp?
2006 Ford Focus ZX4 2.0L reverse VIN: 1FAHP34N06
Vehicle stalls when put into reverse. No codes stored, fluid condition red and full, no evidence of previous repairs. Checked data on scan tool, tss, vss, pnp, tft data within specs. Tried unplugging electric harness to solenoids. Problem still occurred. Disco...
2007 Ford Five Hundred SEL 3.0L Surge, Stall VIN: 1FAFP24187
Vehicle came in on hook and not idling. Engine would spin over. Observation found a hole, looked like it was burnt in the plastic intake phenum near the throttle, on top. Cover it up and it cranked and ran. Replaced intake phenum along with all plugs and two c...
2008 Ford F-150 XLT 5.4L engine VIN: 1FTRF14VX8
i have a misfire on all cylinders on bank one cylinders two fires fine.coils are firing,fuel injectors pulsing,compression 175-185.exhaust seems okay.thinking timing chain has jumped a couple teeth,but with good compression i hate to pull down just gu...
2006 GMC Sierra 2500 HD SLT 6.0L fuel gauge VIN: 1GTHK23U76
fuel gauge inop. empty + low fuel light on.code po 463 fuel level sensor open.does work with scanner doing a sweep. disconnected connecter at sender and jumper sig. to ref. wires cleared code. still reading empty. signal wire reads 5 volts.ref.wire strong grou...
2007 GMC Yukon Denali 6.2L Electronic VIN: 1GKFK638X7
Hello, I hope someone can help us with this Yukon Denali. It first came in with a U0101 communication fault with TCM. We found no power from the fuse box to TCM. We fix the circuit from the fuse box to the TCM which is in the transmission. We know have comunic...
1998 Honda Accord LX 2.3L Cooling system
The coolant overflow is filling with oil. There is no coolant in the oil. Only oil in the coolant. I checked the oil fill cap for moisture, the dipstick for milky oil and pulled the oil drain plug to see if there was coolant in the bottom of the oil pan...ther...
1998 Honda Passport EX 3.2L rack VIN: 4S6CK58W4W
Problem I believe is I keep getting steering racks that are clocked wrong. This is My daughter's car. I put a steering rack in this from Advanced Auto parts due to a leak. The splines of the rack only fit one way to the u joint leading to column, meaning, if y...
2002 Jeep Liberty Limited 3.7L Transmission VIN: 1J8GL58K72
Upon coming to a stop the vehicle will not downshift automatically. You can manually shift it without any issue. The check engine lamp is cycling on and off about every five or six key on, key off. Code is po 845 and po 987. Transmission shifts are crisp and b...
2009 Land Rover LR2 HSE 3.2L Charging VIN: SALFT24N49
vehicle was towed in for no start! battery was dead, recharged and cleared out code. It started right up! after running for awhile battery light came on! checked alt. and there was on voltage, just battery and droping! replaced alternator, restarted vehicle an...
2003 Lincoln Navigator 5.4L trac light is on VIN: 5LMFU28R73
HELP!!! Cutomer concern= trac light is on. I found no pwr on ckt 1524 at 4x4 module. Air susp. module is missing and connectors are hanging down with pwr @ ckt 1524. Checked all fuses= ok. I removed ckt 1524 from sys and ran a jumper wire from fuse # 20 straig...
1995 Mitsubishi 3000GT SL 3.0L ecm VIN: JA3AM54J1S
I have no communication with scanner. I have tried to find a diagram of the ecm pins with no luck can any one help me? I have tested the fuses and found nothing.
1998 Nissan Quest GXE 3.0L MIL Lamp on VIN: 4N2ZN1110W
Vehicle failed emissions with a p0600. Ran the flow chart and got to the voltage test. The test has you check for voltage at pin 24 and 29 for 6-8 volts. I have no voltage on pin 24. Replaced PCM (used) 2 times and same result. I even tried a TCM from one of t... Trouble codes: P0600
2001 Nissan Pathfinder LE 3.5L Stall, MIL Lamp on VIN: JN8DR09Y11
This pathfinder had an idle problem I replaced The IAC VALVE and now I believe the IAC took out the ECM I check out the wiring and am going to replace the ECM .Im aware I will have to program the ignition keys and my question is can I use my VCI J2534 I think ... Trouble codes: P0505 (Idle air control)
2002 Nissan Xterra SE 3.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 5N1ED28Y22
hi not really a Nissan guy , vehicle came in with check engine light on customer says flashing at times. scan for codes p0328 and p0302, and once I got p0340 erased all code and only p0328 and p0302 come back, replaced #2 plug no change,road test vechile has n... Trouble codes: P0302 (cylinder 2 misfire), P0328, P0340
2003 Subaru Forester XS 2.5L tcc solenoid VIN: JF1SG65673
Customer hit a big rock with transmission pan and check engine and Tran fluid temp lite came on flashing. I removed the pan to find the blue tcc solenoid broken.since I'm way out in th sticks I soldered a new connector to the solenoid and tested for continuity...
1989 Toyota Pickup 2.4L headlights
no headlights I can get low beam to work If I ground the white with black tracer wire in harness at steering column NO high beams at all replaced headlight switch and relay Thanks for any HELP
1997 Toyota Tacoma DLX 2.7L Flywheel, Torque Converter VIN: 4TAWM72N4V
This vehicle has 12,235 miles 2years later, the very same thing happened again. Customer said the only thing that he noticed was interminttenly when he would put into passing gear he would hear a noise. It was a quick noise and didn't do it every time. No ratt...
1998 Toyota Corolla CE 1.8L Guages fuse blows VIN: 1NXBR12E1W
Hello everyone and thanks for the help on this one. I have this 1998 Toyota Corolla in for intermittently blowing the guages fuse. When it blows, the speedo, tach and blower motor stop. This vehicle does have cruise control. I have put a fuse in it and have no...
2006 Toyota RAV4 2.4L Unknown VIN: JTMBD33V36
I have a 06 Toyota Rav4 that has a rattle noise. The noise only occurs in 4th gear on light accel near 40 mph. When I stay in 3rd gear there is no noise. I've tried it in 3rd at various rpm and mph and can't duplicate the noise. It sounds very much like an exh...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1997 Buick LeSabre Custom 3.8L Idle VIN: 1G4HP52K1V
Found a resistance break within the ground strap to the firewall causing the voltage to drop by .2 once that was repaired idle was perfect and problem solved. thank you to every one that helped.
1994 Chevrolet S10 4.3L No Start VIN: 1GCCS14ZXR
First of all I want to thank everyone who gave me advice on this issue that I was having with this s10. To the ones who suggested that the exhaust may be clogged were right. I removed the O2 sensor and the truck started and ran. I unhooked the catalytic con...
1996 Chevrolet Tahoe LS 5.7L Poor Idle Quality, Hesitation, Misfire VIN: 1GNEK13R7T
great help guys! those who said crossfiring in distributor cap nailed it! I could see no visual problems, but since 3 & 5 are next to each other in the cap, it made sense. I even got a few responses before I went to bed last night. also, great info on the ... Trouble codes: P0300.
2004 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEK13T04
Hi guys,i replaced the connector at the throttle body with a pigtale from the dealer and that seems to fix the problem. thanks again everyone for your help. Trouble codes: P1125 (App sensor intermittend problem).
2008 Chevrolet Impala LT 3.5L Oil Leak VIN: 2G1WT58K68
Thanks for the help but I made this one harder then it is. New oem gasket and sealer on the bolts and all is well.
2009 Chevrolet Traverse LT 3.6L steering Angle Sensor
Well the car is fixed. In short the problem was the scan tool. I borrowed a tech II and reset the zero position with no problem. Auto Enginuity and Alldata had deceptive information. Auto Enginuity MAY have worked but I believe it screwed up when it tells you...
2000 Dodge Grand Caravan SE 3.3L No Start, Cuts out, Stall, MIL Lamp on VIN: 1B4GP44G1Y
The problem here was poor connection at the 13-wire injection harness connector. I tweaked the terminals (twisted the males slightly to ensure aggressive contact) and made certain that the connector halves went together fully. It started, didn't die into gear,... Trouble codes: P1391 (No crank sensor signal), P0320 (No cam sensor signal), P0204 (4 injector circuit problem), P0118 (Coolant temp sensor voltage high), P0108 (MAP sensor voltage hight), P0340 (No cam sensor signal).
2001 Dodge Dakota 3.9L misfire VIN: 1B7GL22X01
after testing backpressure which was good we pulled ckp sensor and found where wires go into sensor it looked as the sealant around the wires had heated up opening around the wire insulation replaced crank sensor all better thank you for all the help mark
2004 Dodge Ram 3500 ST 5.9L Unknown VIN: 3D7MA48C44
Reprogrammed computer using a company called Smarty. They sent a flash with the veh info only with the manual trans. Eng revs over 2000 rpm now however CK ENG lite now flashes with code indicating TPS is out of spec. Installed TPS for manual trans, all OK.
2004 Dodge Dakota SLT 4.7L Cuts out VIN: 1D7HL48N24
found broken timing chain guide altering cam timing causing rev limiter to come on at 2500 rpm. while scoping cam and crank the cam sensor was off by 1 pulse width from a known good pattern Trouble codes: P0016.
2001 Ford F-150 Lariat 4.6L Poor Idle Quality, MIL Lamp on VIN: 1FTRX18W61
First off thanks everyone for their help. A little extra that I didn't add made all of the difference. As I mentioned the spark plug broke in #5. What I don't think I mentioned is that due to this, and it already being repaired once prior with an over sized ... Trouble codes: P0171, P0175.
1999 Honda CR-V LX 2.0L oil leak VIN: JHLRD1849X
Thanks for all the responses. In response to manys question about the crankshaft movement, I was referring to foward and back movement. One respose said 2mm was spec and I was under that. I took it apart again and found my answer. There was a very slight but p...
2003 Honda Accord EX 2.4L control unit VIN: JHMCM56703
Thanks to everyone who responded to this one. I inadvertantly stumbled onto what was wrong with this vehicle, and it was kind of an odd thing. I was checking the wiring diagram, and there is a 7.5 amp fuse in fuse panel inside the vehicle which supplies powe...
2006 Honda Odyssey EX 3.5L Steering VIN: 5FNRL38636
It is fixed !!! Why we don't know but the second pump from Honda, and the fourth pump total, fixed it. John, Dave, and James all said the pump was bad. Thanks a lot guys...
2004 Hyundai XG350 3.5L IP warning lights VIN: KMHFU45E94
Thanks to the three people who took the time to read my post and reply. I found the problem. inside the trunk on the left side way down underneath everything there is a 16 pin connector that is corroded and backfeeding the wiring harness. cut out the connec...
2006 Land Rover LR3 4.0L hard start slow cran VIN: SALAE24406
After doing some testing I found the starter motor was bad. The draw was 290 amps and the spec I got in aldata was 1.8 kw witch is 180 amps at 10 volts cranking voltage. Didnt get to finish this car as the customer declined starter motor but was the only that ... Trouble codes: P0335.
2001 Lexus ES300 3.0L vvt system VIN: JT8BF28G31
while i had performed most if not all of the fixes submitted in a majority of the replies the fix was to replace the oil control solenoid. Initial testing of the o.c.v. showed it to be working fine, and current testing shows it to work properly, so, I've concl...
2005 Mercury Montego Premier 3.0L Battery VIN: 1MEFM42195
Tried unhooking all actuators one at a time and that made no difference on draw.I noticed that EATC was warm to the touch because it wasn't shutting down.I suspected something on the CAN communication lines causing it not to go to sleep.I tried unhooking the ...
2001 Nissan Sentra GXE 1.8L idle VIN: 3N1CB51D41
thanks everybody I changed iac valve for a new one and did idle relearn and i cannot explain why but my alternator is now charging 14.61!!! so everything is fixed now thanks for your help Pat
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