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Prev Professional Automotive Repair Technical Discussions for April 3, 2014
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Help Request Answers
2003 Audi A6 3.0L timing VIN: WAULT64N03
Im replacing a timing belt on an audi on a car that i did the heads so im starting from scratch but the instuctions on all data are for a car that hasnt been taken apart my problem with this is since everything was removed the instructions on all data dont app...
2004 Audi A4 Quattro Avant 1.8L lighting level sensor VIN: WAUVC68E24
The level sensor for the front axle was not installed correctly. It has been left so that it is under a great deal of tension. All photo's I have seen show a straight armed attachment to the lower axle that installs on the leading edge. This car has a curved s...
2001 Cadillac Eldorado ETC 4.6L Battery Drain VIN: 1G6ET12991
Thank you in advance for any help! The vehicle came in with the battery going dead over night - tested the charging system and it is charging well and the battery is new. U1064 is the only code that is present. There are no aftermarket accessories installed - ...
1996 Chevrolet Tahoe LS 5.7L Poor Idle Quality, Surge, Misfire VIN: 1GNEK13R8T
This is an intermittent problem that happens once a month. The customer brings it in running rough but once you turn it off the problem corrects. Not sure what else to write. Doesnt happen when it's at the shop. Trouble codes: P2135
2010 Chevrolet Impala LT 3.5L No Start, No Crank VIN: 2G1WB5EN9A
Vehicle does not crank or start. Customer states vehicle initially experienced a no start/no crank condition yesterday, however after waiting several minutes customer was able to crank and start vehicle. Vehicle then needed to be towed due to not cranking or s... Trouble codes: U0100 (Lost Communication with Engine/Powertrain Control Module ECM/PCM)
1999 Dodge Durango SLT 5.9L No Start VIN: 1B4HS28ZXX
Ok guys, here's one for you. This Durango has been here for various no start/stalling complaints a few times over the last 2 years. The customer doesn't drive the vehicle very often (only 111 miles since it was last here in November). The previous concern 2 vi...
2000 Dodge Dakota 4.7L 5v sig return VIN: 1B7GG22N3Y
Customer brought in this Dakota with drivability issues. sets p0208 code for # 8 injector fires improperly, also has shift issues. Looked at live data and with the truck running at idle tps shows 5 volts. I ran tests to see if the 5v ref wire was shorted to th...
2006 Dodge Ram 1500 TRX4 5.7L Transfer Case VIN: 1D7HU18286
This one is for the dodge techs.. I have an 06 ram 1500 4x4. When selecting 4wd hi or 4wd lo nothing happens. No indication on the cluster. Scan data in the tipm shows the selector switch is working properly. This is not an auto awd system nor is it a power wa...
2006 Dodge Dakota ST 3.7L airbag light VIN: 1D7HW22K66
Hello fellas. Just wondering if anyone can give me some help with this vehicle. Truck came into shop with air bag light on. Customer complaint was the air bag light was on after he went through a car wash. Which im not so sure if he is telling the truth . Any ...
2008 Dodge Charger SE 2.7L Shift VIN: 2B3KA43R98
Hello iatn techs, I need help with this car. I have this 08 dodge charger with the 2.7, it was brought from another shop that replaced the engine because it overheated. The mechanic said after he changed it the transmission wouldn't shift out 2nd gear. If you ...
1995 Ford F-350 XL 7.3L Excessive Emissions, Hesitation VIN: 1FTJW36F2S
Running out of ideas on this one. On start up there is heavy bluish/white smoke that burns your eyes. It is definitely unburnt fuel. As the engine warms up the smoke lessens but is still present. Cold the engine stumbles at 2100 RPM and really pushes smoke. At...
1998 Ford F-150 Lariat 4.6L Will not set monitor VIN: 1FTZX1769W
Need help with Mode 6. But first a re-cap: Came in with CEL for P0171. Went to freeze frame and LTFT was29.3% but so was bank 2. Temp was 197 degrees. Vehicle speed 68 mph. smoked engine, no vacuum leaks found. On first test drive noticed Baro pid at 143 so I ... Trouble codes: P0171 (Fuel system too lean bank 1)
2003 Ford Explorer XLT 4.0L air leak VIN: 1FMZU73K83
Thanks for you time... I have my brothers Ford Explorer 2003 that has an air leak/ draft at passengers feet area while driving. I suspect fresh air flap issue... Can look up behind glove box with a mirror and see recirc door servo move when controls switched b...
2006 Ford Explorer XLT 4.0L No Start VIN: 1FMEU73E96
We had this 06 Explorer driven in about a month ago with customer concern of intermittent no start sometimes stall while driving.Ran in shop until it stalled.Tech hit the tank and it started right up so he assumed that the pump was failing.Checked amperage and... Trouble codes: 740 (TCC solenoid inoperative), 743 (TCC solenoid circuit failure during on-board testing), 1235 (Fuel pump control out of range), 1489 (PCV heater control circuit)
2007 Ford Taurus SE 3.0L Poor Idle Quality, Stall VIN: 1FAFP53U67
car came back 2 weeks ago and it had a rough idle and a no start due to no crank. Battery was bad and car ran fine after that for 3 days and now back to rough idle. On scanner and with gauge fuel pressure is fine. The issue is the baro reads 163 HZ and 31 inch... Trouble codes: P0316
2008 Ford Edge Limited 3.5L abs VIN: 2FMDK49C78
I have a C1040 hydraulic base brake fault code in system and cannot find any description in any information base. Seems to be related to ABS and traction control. Brake light and traction control light on. Brakes stop perfectly, all four abs reluctors look goo...
2006 GMC Sierra 1500 SLE 5.3L Hvac VIN: 2GTEK13Z86
2006 GMC Sierra with Dual Auto temp controls. Heater puts out full heat at any temp over 61 Degrees. If lowered below 61 goes full cold (as it should). Checked voltage to actuators and they are correct. Has anyone had a vehicle with this issue? I did look on s...
2004 Honda Accord DX 2.4L Cam/Crank VIN: 1HGCM56114
Vehicle came in for emission inspection. Failed due to "Check Engine" light being on and DTC P0341. The mechanic working on the vehicle replaced the variable valve timing solenoid after troubleshooting the system. Erased code and started engine. Check engine l...
2011 Honda Odyssey Touring Elite 3.5L Alternator VIN: 5FNRL5H96B
Hi Guys, And thank you in advance for your help. I order an alternator coz no one had it in stock. Meanwhile the customer calls Honda. They tell her its probably not the alternator and they tell her that they never go bad. I am sticking to my diagnoses. and I ...
1998 Infiniti QX4 3.3L No Start VIN: JNRAR05Y7W
1998 Infiniti QX4. Tow in crank with no start, fuel pressure, fuel pulse, spark present. Wants to hit from time to time, seems to crank at normal rpm. Inspected distributer, no cap or fluid damage. concerned compression at low end of spec with #1 below. Custom...
2000 Jaguar XJ8 4.0L Timing Chain. VIN: SAJDA14C4Y
I found this timing chain tensioner broken on the left bank. While installing the new chain I found that the primary tensioner is different. The oil passage on the new one doesn't line up with the block and will just shoot oil back into the oil pan. The origin...
1997 Jeep Grand Cherokee Laredo 4.0L ignition VIN: 1J4FX58S7V
jeep comes in with intermittent dying when cold, cranks right back up and no problems rest of the day. code p0351 pops up in secondary indicators, but the check engine light never comes on. cleaned the connectors at the pcm and ohmed the ground wire from coil ...
2001 Jeep Grand Cherokee Laredo 4.7L Cuts out VIN: 1J4GX48N01
I have this truck that suddenly cuts out without any warning and then starts back up without any hesitation. It has new cam and crank sensors which are from the dealer and the idle control valve was replaced about 3 months ago. I put a remanufacture computer a...
2006 Jeep Commander Limited 4.7L keeps running with key out VIN: 1J8HG58N56
06 commander keeps running after you turn off key. The fuel pump relay turns off most of the time. So it will stall after a few seconds(sometimes not). I noticed the ASD relay stays grounded(on) until the engine stalls(from running out of fuel), than the PCM u...
2003 Land Rover Range Rover HSE 4.4L Air Suspension VIN: SALMB11463
There are two codes in the system. Reservoir pressure sensor. And Reservoir pressure sensor supply. Supply voltage is 6.25 Volts Sensor voltage coming back is 2.3 Volts. Good ground. I get same results with different controll unit also. Suspension works in def...
2007 Lexus ES350 3.5L MIL Lamp on VIN: JTHBJ46G47
Need a Fix here and not just a "DART". Car has come back again for the third time with a P0441 and P0455 codes. Last few times I thought customer left cap loose and or had a bad cap so I replaced it. I ran the "Automatic Evap test" thru our Mastertech 3 times ... Trouble codes: P0455 (Gross evap leak), P0441 (Evap incorrect flow)
2002 Mercedes-Benz ML500 5.0L Cuts out VIN: 4JGAB75E02
This vehicle came to me needing a tune up service by age and mileage. The customer also stated that the vehicle had a sticky throttle. The MAF sensor was replaced prior to the vehicle coming to me, to solve a no start. On a road test, I observed a severe cut o... Trouble codes: P20D4
2002 Nissan Altima S 2.5L abs
I have premature abs activation and have scope it with the modis and have not seen any glitches when the abs kick in at random speeds below 30. i have ohmed all the sensor and they are all the same . i do know that when the abs activates it turns on the soleno...
2010 Nissan Armada SE 5.6L Nats VIN: 5N1BA0ND3A
Vehicle came in for battery and intermittent rr window operation. Window worked fine with rr door switch. When not working int. From master switch, no power to rr door when malfunctioning. Put in new switch, now have no rr win operation from master win switch....
2001 Oldsmobile Aurora 3.5L pressure control solenoid VIN: 1G3GR62H61
vehicle came in with complaint of the trans starts to whine intermittently and when it does it will shift hard into all gears until you shut the car off and re start it. it had a p0716 input speed fault and p1811 max adapt/long shift fault stored in controller...
2002 Saturn L200 2.2L Passlock VIN: 1G8JU54F82
Came in with start stall problem- found vehicle will start run for 4 seconds kill, security light flashing-scan body and pcm for codes no codes present-installed new passlock cylinder housing performed re-learn vehicle started - started 3 more times ok--then p...
2002 Toyota Camry SE 2.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: JTDBE32K02
Hi evry body and thank you for your help. I have this toyota here that has lean code all the time, customer took the vehicle to mechanic shop,. They can`t do nothing for him. Engine runs bad when cold, but when warms up, runs better. Accessed for codes, show b... Trouble codes: P0171 (Lean condition), P0300 (Random misfire)
2011 Toyota Tacoma Pre Runner 4.0L MIL Lamp on, inop tachometer VIN: 5TFKU4HN4B
Tested for open/shorts between ICM(C9 w19 ) and PCM (E13)with NPF. Disconnected all related modules to spd circuit and performed pinpoint test for input and output signal. Found input to vary but has a steady output of 5 volts. After reinstalling the instrum... Trouble codes: P0500 (Vehicle Speed Sensor A), C1201 (Engine Control System Malfunction)
2004 Volkswagen Golf R32 3.2L MIL Lamp on VIN: WVWKG61J04
OK everyone I need some help here. I have a 2004 GTI R32 that keep coming up with the same codes 18683 and 19711. I already replaced the Oxygen sensor, I also checked for good continuity from ECM to the oxygen sensor connector. The interesting part is the it t... Trouble codes: 18683 (Oxygen Lambda Sensor B1 S1 Negative Lead Open Circuit), 19711 (Oxygen Sensor B1 S1 Heating Circuit Regulation at Upper Limit)
1997 Volvo 960 2.9L starting VIN: YV1944816V
hi please i need some help from u guys out there especially from volvo fanatics ,this volvo is actually a 1997 940 classic 23L turbo but its not on the list. its equipped with a factory immobilisor but with no fob keys , its got central locking,the car stopped...
2000 Volvo V70 GLT SE 2.4L Voltage VIN: YV1LW56D8Y
The car came in with the complaint that the battery would not start the car after a 1 to 2 day dormant period. The owner stated that he had rplaced the battery and the problem persisted. With the negative cable disconnected from the battery, a test light coupl...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2004 Acura RSX 2.0L front axle VIN: JH4DC53854
Customer picked up the vehicle still making the noise. Rf stut is leaking and both front sway bar end links are loose but customer declined replacement unless I could positively gurantee it would fix his problem which I couldn't. Also it warmed up around here ...
2000 Buick LeSabre Limited 3.8L Unknown VIN: 1G4HR54K0Y
bad motor mounts was the cause of this. thanks for all the help
1999 Cadillac Seville SLS 4.6L starter VIN: 1G6KS54Y5X
Thanks to all .It did have blown head gaskets and was hydrolocking. Customer declined expensive repair so we treated w/ Blue Devil. So far so good even though we don't normally repair cars like this. This car wasn't good enough to do expensive repairs. Thanks ...
2008 Chevrolet Silverado 3500 HD LTZ 6.6L Hesitation, Cuts out VIN: 1GCJC33688
Thanks for all the replies, the truck is fixed finally! We removed the timing cover and found the crankshaft reluctor was bent. We replaced the ring and it runs great now. It was reading a good waveform on the scope but at higher rpms affecting the timing. Trouble codes: P0087 (Low rail pressure previously).
2005 Dodge Grand Caravan SXT 3.8L MIL Lamp on VIN: 2D4GP44L05
we were able to program skim mileage pinion factor ,batt voltage was not a problem. we were not able to program the transmission part of pcm . now for the bad news ,we have been using factory reman pcms because of quality problems . called the remanufacture an... Trouble codes: B0010.
1993 Ford Ranger STX 3.0L Surge, surge when driving VIN: 1FTCR14U3P
I have not yet figured the vehicle out, looking into a few more options and I can post later once I figure it out
1995 Ford F-150 Eddie Bauer 5.8L Theft System VIN: 1FTEF14H4S
information received was not sufficient to solve issue. case is closed at this time due to time required by iatn.
2000 Ford Ranger XL 3.0L Cylinder heads VIN: 1FTYR14V6Y
Greetings and thanks for all the replies. After discovering a measurement difference between the inside of the dowel hole to to the intake side of the cylinder heads.I ended up buying rebuilt heads with the same casting number as the old ones. All the parts gu...
2006 Ford Focus ZX4 ST 2.3L No Start, Hesitation, Stall VIN: 1FAFP38ZX6
Thank you to all that replied, the problem was a very small amount of water got into one of the large connectors in the main wiring harness under the battery. Trouble codes: P0320.
2006 Ford F53 6.8L MIL Lamp on VIN: 1F6MF53YX6
Sometimes I waste more time second guessing myself... The fix was replacing the PCM After confirming the driver in the PCM was bad I was hesitant because it was setting the code for the opposite bank - very odd. Replaced the PCM, programed and rechecked it ... Trouble codes: P0152 (Bank 2 sensor 1 HEGO ckt high).
2008 Ford Mustang 4.0L engine VIN: 1ZVHT80N98
I beleive the oil pump drive was making the noise but the cust didn't want to try it so he took car.Thank's for the replies-Mark
2009 Ford E-350 Super Duty 6.0L No Start, Misfire VIN: 1FDSS34P99
Unfortunately (or maybe fortunately) it doesn't seem we will get the opportunity to get this fixed, I priced it high and haven't heard back form them at all. Most agreed it is time consuming but doable in the truck by removing motor mount and letting the engi... Trouble codes: P0261 (Cyl 1 injector ckt or low contribution), P0269 (Cyl 3 injector ckt or low contribution), P0623 (Generator Control ckt fault).
2007 GMC Acadia SLT 3.6L Misfire, Shutter VIN: 1GKER33787
Transmission flushing cured the problem, all input and replies were very helpful, scanning showed no other codes at this time and vehicle road and drove fine. Thank you for all your help.
1995 Honda Civic DX 1.5L failed emisson test VIN: 2HGEJ2128S
thanks to all replies for your help . i found the problem the car was not getting in close loop i check all the wires to the computer and all of them were good. finally i had an other similar civic and i tried other computer.guess what it was from...
2001 Honda Civic EX 1.7L speedometer
reply makes sense problem only happens in cold weather will reevaluate next fall thanks
2004 Honda Civic LX 1.7L Unknown VIN: 2HGES16594
Alright everyone this one is fixed!!! As everyone stated I should of put an engine into this one but all my test showed that this engine was still least for now. I did send head to machine shop and checked the block with a .004 feeler gauge and st...
2002 Jeep Liberty Limited 3.7L Transmission VIN: 1J8GL58K72
pulled down the trans pan and found no problem with the valve body. didnt want to chance the chancy issue with the low line pressure, so we just replaced it with a used tranny. all is good now. thanks again for the replies,GO IATN!!!
2003 Kia Sedona EX 3.5L Misfire VIN: KNDUP13103
New set of plug wires had a bad wire in it. Replaced plug wires again and it runs fine now.
2002 Mercedes-Benz CL500 5.0L Suspension VIN: WDBPJ75J12
Customer admitted ABC light had been on for quite some time before pump started leaking and suspension leaked down. He was advised that there would be additional charges for troubleshooting plus whatever parts would be necessary. He was happy that the suspensi...
1993 Mercury Topaz GS 2.3L Surge, Cuts out VIN: 2MEPM36XXP
I spoke to the customer a couple of times about the info I got here and he is reluctant to bring it back because he is afraid it may turn out to be the valve seats. I offer to replace the EGR pressure feedback sensor again to get it back in the shop but again...
2004 Nissan Maxima SL 3.5L Hesitation, spark knock VIN: 1N4BA41E64
The VVT sprockets froze in the retarded positions due to the consumption of the lousy oil in the engine. then the retarded cam timing in conjunction with the oil consumption clogged/melted all 3 cats. I took the engine out to perform all of the operations. ... Trouble codes: P0011 (valve timing B1), P0021 (valve timing B2).
2005 Nissan Altima SE-R 3.5L No Start VIN: 1N4BL11E45
This one finally drove out under it's own power, special thanks to Andrew [...] for decoding the bcm#. I'm not sure if part of the problem was I got lost in the diag. The nats fault was present from the beginning but the were so many electrical gremlins, ie ... Trouble codes: P1610 (Nats system lockout).
2006 Nissan Murano SL 3.5L MIL Lamp on VIN: JN8AZ08T16
Timing was out one link on main chain. There is no way to physically know if the phaser is seized. When going together may tip would be time your secondary chains and don't look at them again. If the secondary and main chains are timed right when put togeth... Trouble codes: P0011 (Bank 1 Intake Valve Timing Control).
2002 Oldsmobile Alero GX 2.2L Monitors won't reset VIN: 1G3NK52F12
Well I had some good replies on this one, engine temp seems to be critical for the monitors to reset and just as I was monitoring ECT while driving the last two monitors reset for me. Both new oxygen sensors and the new catalytic converter, plus around 300 mil...
2003 Porsche 911 Carrera 3.6L Vent Temp. VIN: WP0AA29903
Thanks for all the replies. It turned out the actuator did come unsecured during the repair of the heater core.
2006 Porsche Cayenne S 4.5L Abs Module VIN: WP1AB29P26
Thanks to all those who replied. Australian Steve was the closest. After thinking about it for a few days we decided to swap abs sensors from the problem wheel to the the back. We had the same issue. We decided to disassemble the R/F yet again. After a very th...
2009 Porsche Cayenne 3.6L MIL Lamp on VIN: WP1AA29P39
The valve cover incorporates the PCV/crankcase vent valve on this engine, the diaphragm had failed causing a vacuum leak that could be heard and felt at the small hole just above the hose connection on rear of valve cover. The valve cover assembly must be repl... Trouble codes: P2189, P2187, P0507.
2003 Subaru Forester XS 2.5L tcc solenoid VIN: JF1SG65673
Thanks for the good info.customer did return and light was flashing continuously with no pauses.if any one can clue me on this it would be appreciated. We located TCM and unplugged to clear codes but flashing at temp lite came back ,same condition,flashing con...
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