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Prev Professional Automotive Repair Technical Discussions for December 18, 2014
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2002 Audi A4 Quattro 3.0L oil pressure VIN: WAULT68E42
came in with oil pressure light coming on at lower rpms. there is no codes in the system, engine is not making any noise. checked actual oil pressure, cold start pressure is 70psi at idle, 85psi @2k RPM and maxes out at 100PSI WOT. Pressure at 80 deg C... 15 P...
2011 Audi Q7 TDI Premium 3.0L Service reset
Hi all in IATN land. Thank for taking the time to read this post. I have a first time customer with a Q7. We did the maintenance on the car and re set the oil service but the service message in the dash is still coming on. I have a Snap On Verus and went into ...
2005 BMW 325i 2.5L MIL Lamp on
long term fuel trims at idle +18 to +24 both banks close in trim. st fuel trim at idle + 3 to +8.Freeze frame showes hot at idle st lt trims to high. Sray intake w brake cleaner and fuel trims go neg. Even after gaskets and o rings. using propane around inject... Trouble codes: P0171, P0174
2007 BMW 525xi 3.0L Safety VIN: WBANF33557
I can't seem to find any info on the location of the tpms receiving antenna. nothing found underneath center of car!If anyone has the location of this item id appreciate it!
2007 BMW X5 4.8i 4.8L K-CAN crash VIN: 5UXFE83547
Well this one is really kicking our butts and my (foolish, ego-driven) inability to give up has tallied more hours than could ever be billed. We can not find the K-CAN fault in this E70. THE BACKGROUND: Car came in with an electrical system failure message i...
2008 BMW 335xi 3.0L High Beams VIN: WBAVD53598
Customer Stated the High beams would intermittently cut out, Now they are completely inop. High beam indicator lights up in dash, Test voltages. Check at headlight bulb connector we have no power at white/blue wire on RF & No power on LS at white/green wire. S...
2010 BMW 328i 3.0L Radio VIN: WBAPH7G52A
When programming the footwell module using a DrewTech and BMW online programming we lost operation of the Radio-Cd-Satellite radio. The display on the radio had a strange dialog displayed regarding the satellite radio being inoperative. additionally we were un...
2002 Buick Park Avenue 3.8L Misfire VIN: 1G4CW54K92
Vehicle came in for check engine light flashing. Scan and found (p0300) set for random misfired. I pull the spark plugs off, gap is out off spec, and corroded really bad. I replace with new oem iridium plugs and premium ignition wire set. Check engine comes ba... Trouble codes: P0300
1998 Chevrolet K1500 Cheyenne 5.7L transfer case VIN: 1GCEK14R1W
This vehicle came to me with complaint of no 4X4. When customer dropped off they stated they had tried to fix themselves. Sure enough it was in pieces. After I reassemble various parts I diagnosed a bad encoder motor. Installed new motor and when I plugged it ...
2002 Chevrolet Silverado 3500 6.0L Fuel guage VIN: 1GBJK34U82
This truck has a dual fuel tank system. It has an aluminum box on the truck instead of a bed. The truck is used for tree trimming services. The owner says that when the truck is out in the field on uneven surfaces the fuel gauge will go to empty and code p1172...
2005 Chevrolet Silverado 1500 4.3L starting VIN: 1GCEC19XX5
Hi and thanks in advance. So this truck ends up in our shop. It has a starter that stayed engaged when it would start. We replaced the starter and it fixed the engage problem. But now see that when you turn the key the starter turns the engine over for like 2 ...
2006 Chevrolet Impala LTZ 3.9L distance VIN: 2G1WU58136
Customer complaint, only short range remote start working. works no longer than 75 feet. i have done the above service bulletin for the poor range. and i actually installed the updated RCDLR module with part # [...]. the vehicle still has the poor range. pa...
2009 Chevrolet Silverado 1500 LT 4.8L MIL Lamp on VIN: 1GCEK29C59
Hello All! MIL sets P2534 in Fuel Pressure Control Module (FPCM) and trailer brake control module (which it doesn't have) immediately on start up. have good battery voltage at Fuel Pressure Control Module with key in Ignition positions 2 and crank. Interesting... Trouble codes: P2534 (Ign circuit low), P069E
2010 Chevrolet Silverado 1500 Hybrid 6.0L MIL Lamp on VIN: 3GCXCUEJ3A
Hi friends, im already confused with this car, check engine light is on show me code P0011 im already replaced camshaft position sensor and camshaft actuator, replaced oil, filter, oil pressure ok. Trouble codes: P0011 (Camshaft Actuator perfomance)
2002 Chrysler 300M 3.5L Stall, MIL Lamp on VIN: 2C3AE66G72
Customer complaint of stalling when at stop lights. Pulled code 0138, 0441,(Wednesday) Replace oxygen sensor, vapor canister, purge solenoid. No problems on test drives.. Customer picks up car and within a mile, car dies.. When it arrived back that night - tra... Trouble codes: 138 (oxygen sensor 1/2), 0441 (purge), 731 (1776 -), 1776 (831 -), 831
2001 Dodge Dakota Sport 4.7L Rear brakes VIN: 1B7GG22N31
Hello to all. This truck is having an issue with the brakes, the right rear will overheat after a 15 min drive. Temps are L/F-240 R/f-240 L/R 150 R/R 350. This originally came in with warped rotors and drums. We replace front pads and rotors and rear shoes, ...
2007 Dodge Sprinter 2500 3.0L Lighting VIN: WD8PE74507
This vehicle had Xeon lights from the factory. Someone has hacked out the expensive parts and has done some creative wiring at the headlight assemblies. It may be easier to install conventional headlight assemblies than the expensive Xeon lights. If we try the...
2000 Ford Mustang 3.8L Excessive Emissions, No Start, Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1FAFP4043Y
This car came in running very bad and blowing black soot out of tailpipe. After turning it off it wouldn't restart, had to pull spark plugs and dry cylinders and plugs for it to restart. Fuel pressure reads 75 psi, I am able to control it with a scanner. Fuel ... Trouble codes: P0412
2003 Ford Explorer Sport Trac XLS 4.0L Engine misfire VIN: 1FMZU77E03
Hello all you Ford pros. This has been driving us a bit nuts and I'm not sure what I could be missing. At idle the engine misses on #4 cylinder. All systems appear to be ok. There are no stored codes. We removed the injectors and checked spray pattern and numb...
2004 Ford F-350 Super Duty King Ranch 6.0L No Start VIN: 1FTWW33P04
while cranking ipr is commanded 85 percent, icp is only 25 psi. crank case is normal oil level. not a lot of experience with diesels. what is my next step. I thought about installing ipr valve. need help. thx Trouble codes: P2291
2005 Ford Focus ZX4 2.0L Poor Idle Quality, Stall VIN: 1FAHP34N75
This one came in as a no crank. Charged battery, still no crank. Put power to solenoid, still no crank, voltage drops ok; replace starter, still no crank but cranks with power to solenoid. Trace starter circuit, find no ground for starter relay, condemned PCM....
2005 Ford F-150 STX 4.6L ignition VIN: 1FTRX14W35
Ok here we go. truck will not shut off(key off/ignition off and key in pocket)It stays running and operates fine. Will only shut off by pulling pcm power relay or disconnecting battery and alternator I have replaced ignition switch and fuse block with no chan...
2006 Ford Expedition XLT 5.4L Poor Idle Quality, Misfire VIN: 1FMPU16546
Hi ford guys. Another winner. Customer had antother shop snap off five plugs. they managed to get them all out ok but it runs rough,no misfire codes. bank one vct stays at 0 or minus0. manual oil pressure erratic on guage. Oil pressure bounces from 20 to 40 ho... Trouble codes: P0581
2004 GMC Envoy SLT 4.2L Engine VIN: 1GKES16S54
I'm at my wits end with this Envoy. After reinstalling cylinder head I have developed a misfire on cylinder #5. Upon startup, no misfire is evident. As it warms, I can observe the misfires start to rack up on scan tool. The warmer the engine becomes, the faste...
2006 Jaguar S-Type VDP Edition 4.2L auxillary coolant pump VIN: SAJWA01B96
we are working on a 2006 v8 Stype Jaguar- that will not heat going slow. we know all about the problems with the control head, and the dual valve. We do not have that problem. Our auxillary water pump never comes on. and water flows inadequate heat without run...
1996 Jeep Grand Cherokee Limited 5.2L No Start VIN: 1J4GZ78Y0T
Help! This Grand Cherokee came in for a "no start" condition after another shop had replaced the ECM. After their replacement it died after running for an hour or so. They referred the customer to me. First thing I noticed was that there was no scanner communi... Trouble codes: P1389
2002 Jeep Grand Cherokee Laredo 4.0L headlights,wipers,interior lights,power windows VIN: 1J4GW48S52
car came in with no headlights,no front wipers,no power door locks. disconnect battery for 5 to 10 min will be ok for 2 or 3 days. then it will do it again.
2006 Lexus IS250 2.5L Spill Valve VIN: JTHBK26256
Customer brought vehicle in for a noise in engine compartment. Traced noise to the electrical spill valve on top of the high pressure fuel pump. You can disconnect it and noise goes away. While in the shop became a no start with P0087 fuel rail/pressure too lo...
2002 Mazda Tribute ES 3.0L starting VIN: 4F2CU09122
So all you ford and mazda techs this is for you . 2002 mazda tribute (ford escape) 3.0l v6 automatic. no codes in computer at all. no start cranks ok. no spark. crank engine and leave key in on position for 1 min crank engine fires up and will start every time...
2003 Mazda Protege ES 2.0L Misfire VIN: JM1BJ22593
hi everyone, trying to determine root cause of cylinder number 4 sparkplug ground bending and touching centre electrode closing plug gap over 3000 miles of driving. Replaced once and happens again. Im thinking detonation in cylinder 4, but why? Your thoughts ... Trouble codes: P0304
2002 Mercury Mountaineer 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4M2ZU86W32
Customer came n and said he had scanned it at a parts store and said it needed plugs on 1, 3, and 5. And only wanted to put those in, said he was saleing the suv. So we put those n and it ran okay, he left and came back about 300 miles later and said the lite ... Trouble codes: P0300, P0301, P0303, P0305
2007 Mercury Milan Premier 2.3L Transmission VIN: 3MEHM08Z87
Vehicle came in complaining of transmission issue and check engine light on. Scanned codes. P0778 pressure control b circuit failure. Performed testing as per chart and replaced control module. 3 days later came back again. Rechecked everything. Replaced solen...
2007 Mitsubishi Raider DuroCross 3.7L No Start VIN: 1Z7HT38P27
Customer stated that truck died while driving on the highway. Customer brought the truck to the shop, hooked up the scan tool to it. Scan all module everyone communicated except the pcm, checked all the wiring and fuses everything ok. No 5v coming out of pcm. ...
2008 Nissan Frontier LE 4.0L No Start VIN: 1N6AD07WX8
This Frontier is a puzzling one. Originally the complaint was that it would crank and not start when it warmed up. Most of the time once it warms up it cranks and won't start but it also does it sometimes when it is cold. It either starts right up like nothing...
2008 Porsche Cayenne 3.6L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: WP1AA29P78
Porsche and VW touareg techs please help! have 2008 v6 cayenne came in with poor idle and MIL illuminated, performed the listed repairs and still have the same code, P0674. code comes back almost immediately. The valve cover with built in pcv valve/oil separat... Trouble codes: P12A2, P0674
1984 Subaru SAMBAR 660CID no run/no spark
Who outthere is familiar with a Subaru Sambar? I do not know the year of this one, but, it has the EN07 Clover Engine and is Carberated. What does the ignition system consist of? This one does not have a crank angle sensor, cam sensor or control module. Should...
2000 Toyota Camry CE 2.2L shift solonoid E VIN: JT2BG22K1Y
Hello. I have this camry that came in with a p0770 code. Shift solonoid E malfunction also know as shift solonoid valve SL. Looking at the wiring diagram it is the solonoid with the pink wire. That solonoid is on the outside of the transmission behind the neut...
2007 Toyota Camry XLE 3.5L no start VIN: 4T1BK46K47
vin set no problem. no luck registration keys tryed tech light and maxdas . This is a used computer. car will start and cut off,program level is same as old computer.unless i did key relearn in wrong order should have worked .looking for any feed back problem....
2010 Toyota Highlander SE 3.5L po301 VIN: 5TDKK3EH3A
2010 Toyota highlander has po301 misfire codes that keeps coming back. Changed all coils and plugs. Tested solenoids all okay. Did vacuum test while running good vacuum is good. when it starts running bad vacuum goes crazy. Removed valve cover to check valve s...
2006 Volkswagen Jetta TDI 1.9L No Start VIN: 3VWST71K46
Thank in advance for you help! The Jetta TDI was towed in to our shop. This is the story that I got. The vehicle was not properly maintained and the engine bottom end went up. The VW dealer installed a new short block. Vehicle ran fine for five months, then th...
2002 Volvo V70 2.4T 2.4L Engine VIN: YV1SW58D42
Hello all, we have a Volvo in our shop that needs an engine. Knocking, very low oil pressure, metal in oil, etc. We don't work on many European imports at all, so as I get ready to swap this engine out for a low mileage used unit, I was just wondering if the...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2007 Audi A4 Quattro 2.0L Surge, MIL Lamp on VIN: WAUDF78E47
Tested fuel pressure with a digital guage and compared to sensor reading as per audi tsb and replaced sensor, clear dtc and readapt.road tested 42 miles and all is well.thanks for all the help guys...merry Christmas Trouble codes: P0089 (Fuel pressure regulation 012555).
1999 Chevrolet Silverado 1500 5.3L Misfire
2003 Chevrolet Tracker 2.0L engine VIN: 2CNBE13C93
thanks for all the help, Charles from Pennsylvania you were right the new mounts i used were were anchor brand, i put new GM mounts on and all vibration is gone, thanks to all for your help
2008 Chevrolet Aveo LS 1.6L no communication with tcm VIN: KL1TD56628
thank you both for the responses it turns out i must have blown the fuse when testing the vss before replacement. when i followed the advise of Michael i found the blown fuse. it's not often i ask for help on this forum but it.s nice to get the help when you n...
2008 Chevrolet Tahoe LTZ 5.3L engine noise VIN: 1GNFK13008
After looking at the numerous possibilities we have contacted the customer and recommended a complete engine replacement due to the high expense of exploratory required to find the actual problem with such high miles. If we get the job, I will break down the e...
2008 Dodge Ram 2500 SLT 6.7L Hesitation VIN: 3D7KS28A38
We have finally fixed this vehicle! Thanks to everyone that replied and sorry for the late close. Upon consulting some experienced dodge technicians, we learned that the wastegate valves stick and what these need to repair this type of odd intermittent sympt...
2008 Dodge Avenger SXT 2.4L blend door
Okay here we go...I installed the new actuator and unhooked battery after talking with a buddy of mine that works at the local dealer. Hooked battery back up and all blend doors cycled and relearned. Car left and came back the next day with a even louder and f...
2008 Ford F-250 Super Duty XLT 6.4L cooler flow VIN: 1FTSW21R18
After verifying that the coolers and lines were clear again, I got the engine up to operating temp and took the RPM up to 1200 in gear. When my trans temp hit around 175F the external cooler and lines heated up very nicely. Apparently, in this cool of weather,...
2003 Nissan Xterra SE 3.3L No Start VIN: 5N1ED28Y73
Thanks for the input guys. This turned out to be a case of bad luck. We unplugged everything computer controlled and still had .2 volts on all the 5 volt reference circuits. That made us as sure as we could be that there was nothing pulling the circuit down. W...
2001 Pontiac Grand Am SE 3.4L MIL Lamp on VIN: 1G2NF12E81
A used PCM fixed this one. Load tested o2 heater power circuit with headlamp bulb (checked okay), grounded o2 heater control at PCM connector with headlamp bulb installed (checked okay), bulb was very dim with PCM hooked up and bulb in place of o2 heater. In... Trouble codes: P0030 (Oxygen sensor heater circuit fault).
2002 Volkswagen Passat GLS 1.8L Misfire VIN: WVWPD63B82
VW finally came back in for repair. I got a bosch air flow sensor and that appears to have fixed the problem, well it did but removing the air box I found the hose from air cleaner housing to turbo was wrinkled up at air cleaner and incorrectly installed causi... Trouble codes: P0300, P0301, P0302, P0303, P0304.
2012 Volkswagen Jetta TDI 2.0L Starting VIN: 3VWPL7AJ3C
Changing the switch cured the problem. It is a relatively easy switch to change in about a half hour.
1982 Volvo 244 GL 2.1L Fuel Injectors VIN: YV1AX4948C
I took apart the fuel distributor to find a paper towel inside of the bellow. Also, I saw a brand new air filter that the owner had changed himself. After removing the obstruction the car starts now and runs almost as good as before. It's got more vacuum le...
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