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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 11, 2011
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Open Help Requests for All Makes and Models
Help Request Answers
2000 Audi A4 1.8L Misfire, MIL Lamp on VIN: WAUDC68D4Y
Intermittent misfire, high fuel pressure. Vehicle was test driven and on return trip started misfiring. After a few miles the miss went away. Spark plugs appear to have been changed recently, as well as coils on cylinders 1,2, and 4. Fuel has no water, cloudin... Trouble codes: P0300, P0301 (Cylinder one misfire)
2004 Audi A6 Quattro Avant 3.0L turn signals VIN: WAUVT64B34
customer complaint was they heard a clicking coming from dash after turn signal cancelled in either direction. also right turn indicator in the instrument cluster lights up dimmly during right signal operation, all the exterior turn signals/hazard lights are w...
2006 Audi A6 3.2L engine VIN: WAUKH74F16
Thanks in advance, this vehicle has code #P0307 A-009 air intake system flow low, cannot find any info, also code #P0068 Map Maf throttle correlation, before we start digging in just looking for a little insight into these codes, thanks again
2005 Buick Park Avenue 3.8L Misfire, MIL Lamp on VIN: 1G4CW54K55
Hi, This Buick has a misfire on cylinder #1 that occurs exactly at 4200 rpm' or higher. The code that reoccurs is p0300 but live data shows 10,500 misfires on cylinder #1. Does not happen under load or on hoist. I removed the valve cover to check for a broken ... Trouble codes: P0300 (Misfire)
2007 Cadillac Escalade ESV 6.2L Drivers Heated Seat VIN: 1GYFK66817
On my 2007 escalade esv 4 wheel drive with heated and cooled front seats. My drivers seat heater is inop. Both the upper and lower heat went out at the same time. The indicator on the climate controle panel reflects the inputs from the camand button on the cli...
1991 Chevrolet S10 2.5L Ing VIN: 1GBCS10A8M
Postal LLV 2.5 cut out while driving, had intermitten spark from coil no spark on cyl #1,2,4 but same spark on #3 as coil had. Replaced dist. and computer also had tune up just two weeks prior. Not sure what to check from here.
2000 Chevrolet Venture 3.4L Cooling fans
I've already advised customer that he needs to flush the cooling system, replace the leaking gaskets, replace the radiator & water pump on this Van. Radiator and pump replacement based on vehicle age/mileage and clogging of radiator due to neglected coolant se...
2000 Chevrolet Impala 3.4L MIL Lamp on VIN: 2G1WF55E7Y
Got this one from a shop down the road. Poor guy did all the basics and is still having a code set from time to time. One thing I noticed right off was on both failure records it had when it got here was a BARO pid of 74 in Hg. Wow, that must be a deep hole wh... Trouble codes: P0401
2002 Chevrolet Cavalier LS Sport 2.2L MIL Lamp on VIN: 1G1JH12F02
We replaced the Fuel Pump Module a while back on this vehicle(unrelated, no-start condition. When this problem occurred, we smoke tested the EVAP, No loss of pressure or leaks were noted, we replaced fuel cap with OEM & Reset & Cleared EVAP Monitor. Vehicle re... Trouble codes: P0440 (The EVAP System is not able to maintain or achieve vacuum during the diagnostic test.)
2003 Chevrolet Impala 3.4L No Start, Cuts out, Stall, MIL Lamp on VIN: 2G1WF52E93
Car starts when the key is turned but cuts out after 1-2 secs. It will start and stay running on the second attempt(almost always- when it doesnt I must spray ether in to get started). Once it runs past that point of ~2 secs it will never cut out again until k... Trouble codes: P0336
2004 Chevrolet Monte Carlo SS 3.8L no heat VIN: 2G1WX15K14
this car wont blow any hot/warm air, heater hoses are hot, it has dual side controls and both actuator motors look like there turning, it acted up on them last fall and seemed to correct itself at that time, has no codes, when you slide the temp control levers...
2006 Chevrolet HHR LS 2.2L Steering VIN: 3GNDA13D46
Had customer stop by with steering problem and check engine light on. Could not leave car but will be returning Monday. Took a quick look at car my solus would not read codes {will not communciate} checked fuses all tested good. The power steering is not worki...
2000 Chrysler Concorde LX 2.7L Mechanical VIN: 2C3HD46R8Y
Car had a Jasper engine installed in 5-2007. Mileage was 60707. Vehicle came in a few weeks ago with a shutting off complaint while driving. Let sit a few minutes, start up and drive a little and again shut off. Engine gets noisy just before it shuts off. Init...
2002 Chrysler Town & Country LXi 3.3L Misfire VIN: 2C4GP44342
i give up! misfire code set for cyl 6 at times, SES comes and goes. only time felt is at idle, in gear. not felt at all off of idle or driving. plenty of power. we have done plugs, wires, injector on 6, coil pack, checked compression, (160 psi, same as other c...
1994 Dodge Dakota 3.9L Poor Idle Quality, Stall VIN: 1B7GG23XXR
Help Dodge Techs! This truck will start and run great cold but once warm will idle rough/ low and stall. Try to restart and it will kick back against the starter and sometimes start and stall- sometimes only crank. Engine is losing spark- looseness in the dist...
1999 Dodge Ram 2500 5.9L sensor circuit VIN: 1B7KF2364X
1999 Dodge Cummins came in as a no start. Owner said he hooked in toggle switch to boost pressure sensor per youtube and engine quit when flipped the switch. I will keep this short.The truck starts and runs with BPS unplugged and doesn't die when plugged in,bu...
2005 Dodge Neon SXT 2.0L Engine VIN: 1B3ES56C35
Customer came in for a bad vibration at idle. All motor mounts were broken so we replaced the motor mounts. The vibration is still there. Never went away. It is very strong. Just looking to see what the cause might be now. Thanks for you help.
2007 Dodge Ram 1500 TRX4 5.7L fuel tank VIN: 1D7HU16287
truck came in and tank will not fill fast enough for the first click on fill nozzel.Pulled off vent hoses to canister and still will not fill. Replaced fuell tank and tank still fills very slowly, any ideas signed frustraded dave
1995 Ford F-150 Eddie Bauer 5.0L Poor Fuel Economy VIN: 1FTEF14NDS
My question on this one is what tells the pcm when and how much egr is needed. On this truck the egr opens to 50% evr with just a small amount of throttle in park, nuetral, and drive. So in park or neutral if i rev it up just a little off idle the egr is coman...
1999 Ford F-250 Super Duty Lariat 6.8L Mechanical VIN: 1FTNX21S0X
This engine has something intermitant mechanically and i'm thinking timing chain tensioners/lifter bleed down. When it wants to act up it cranks over very fast for say 10 seconds like NO COMPRESSION and then fires up and runs great, it only does it when it wa...
2001 Ford Explorer Sport Trac 4.0L brake pedal VIN: 1FMZU77E61
This sport trac came in with a very common problem anti lock braking is activating everytime you are coming to stop or slowing down.This one was a little more it seemed very touchy as in every time you pressed the brake pedal immediately it would grab the whee...
2003 Ford F-250 Super Duty XLT 6.0L engine not starting- multiple problems VIN: 1FTNW21P93
Greetings and please help shed some light on this very problematic truck. Owner reported driving truck normally & parked in driveway. Would not start . Crank fine but no start. After some attempted repairs from friends it was towed here. First thing I noticed ...
2004 Ford F-150 Lariat 5.4L Control Panel VIN: 1FTPX12544
Hello to all. I am hoping for someone to be able to save my rear and bring me back from the abyss. This F-150 came to me with the A/C panel not working at all. No communication with scan tool. Doesn't light up at all. Following Mitchell's flow chart I tested f...
1992 GMC C2500 Suburban 7.4L 304 Trans Temp VIN: 1GKGC26N3N
After repairing harness was still surprised to see trans temp so high. Pulled connector off trans. Trans temp never changed. Odd. Also noticed i had no tps voltage on trans side of modis but had it on engine side of scanner(modis). After following flow chart t...
2002 Jaguar X-Type 2.5L cat. efficiency VIN: SAJEB51D62
car came in with check engine light on. scanned for codes, found P0303,P0301,P0300,P1316,P1313(misfire codes); P0174(system too lean bank 2); P0420,P0430 (catalyst system efficiency below threshold bank 1&2). random misfire was caused by oil seeping inside spa... Trouble codes: P0420 (catalyst system efficiency below thresholdbank 1), P0430 (catalyst system efficiency below thresholdbank 2)
2003 Jaguar X-Type 2.5L Surge VIN: SAJEB52D43
Thanks in advance for some info on this Jag. Symptom: surging as fuel pressure drops to 30psi. We ass-u-me fuel pump, new pump, same problem. On hindsight, we've found the car runs fine until fuel level gets below 1/4 level, then the surging starts. Fill tank ... Trouble codes: P0171, P0174
2000 Mazda 626 ES 2.0L engine VIN: 1YVGF22C1Y
car came in for smoke only on startup then clears out found pcv had a little oil inline replace pcv valve and wondering if it has a oil runback problem or if there are any baffle problems in pcv. have not checked valve guides or seals
2004 Mazda 6 S 3.0L Poor Idle Quality, Stall, MIL Lamp on VIN: 1YVHP80D94
Thanks in advance for your help. This vehicle sets code P0021 during first drive cycle. Idle is rough and will stall at times. Removed oil control valve on front cylinder head and checked position and operation. The timing chain does not appear to be loose. Th... Trouble codes: P0021 (A camshaft position Timing over-advanced or system performance B2)
1998 Mercedes-Benz ML320 3.2L Misfire, MIL Lamp on VIN: 4JGAB54E7W
Vehicle runs good, the only concern is that the check engine light comes on and then there is a miss until you cycle the key off and back on again, then the miss is gone. We have driven the vehicle for several days and it is always the same, it will act up on ... Trouble codes: P0306
2006 Mitsubishi Galant LS 3.8L starter VIN: 4A3AB36S36
This car was towed in from the dealer with a no crank condition. Found engine was locked up. i removed the starter and the engine was free. we replaced the torque conver with ring gear. we replaced the starter twice. it grinds when cranking. it dosent apear th...
2002 Nissan Altima 2.5L no hot air out vents always cold air VIN: 1N4AL11D02
this car we replaced the coolant and ever since i can not get hot air out the vents at idle it gets alittle warmer when we are driving but not up to its normal checked the thermostat o.k. water valve is not stuck engine is coming up to normal temp. not getting...
2002 Nissan Sentra CA 1.8L No Start VIN: 3N1CB51A92
Replaced CKP sensor, still no start. Perform pinpoint test and lead to replace computer. Tried another known good CKP sensor. Both power and ground is good from sensor to computer. I have scoped CKP and CMP at the ECM and the signals are synced, and look ok. M... Trouble codes: P0335
1998 Oldsmobile 88 Royale 3.8L No Start VIN: 1G3HN52K4W
Hi yall, i have a bit of a stumper here, this vehicle was just brought in on the hook. customer stated that they just got out of the store and vehicle would just crank. I checked fuel pressure first off and it is at 50 Psi steady during cranking and holds pres... Trouble codes: P0300
2011 Ram 3500 SXT 6.7L MIL Lamp on VIN: 3D6WZ4CL8B
I have a 2011 Dodge 3500 that keeps setting a P204E code. It came in the other day with a "service DEF system and P204E and P20E8. I noticed that the DEF fluid was low so I toped it off and cleared all the codes. Test drove and it seamd to ran fine. After a fe...
1999 Subaru Legacy Limited 30th Anniversary 2.5L transfer clutch VIN: 4S3BG6855X
This is my own personal vehicle. This has the 4eat phase 2 transmission. This problem has been ongoing for 2 years now. Problem only occurs in cold ambient temps. and goes way after driving for 10-15 min. When accelerating while in overdrive from about 55mph a...
1996 Toyota Camry DX 2.2L No Start VIN: 4T1BG12K5T
1996 toyota camry towed in no start. First check was fuel pressure and had none. Replaced fuel pump and now have proper pressure. Still no start. Check spark and had none. Pulled codes and had only crank sensor circuit code. Disconnected crank sensor harness t... Trouble codes: P0355 (Crank sensor)
2007 Toyota Tundra SR5 4.7L Immobiliser VIN: 5TBET54157
Hi everybody, i have this Tundra that was flooded, changed many parts to try to start the vehicle. Now i have two issues the first one i changed the immobiliser because of water i wonder if possible to get the seed code to reprogram the keys. The second issue ...
2001 Volkswagen Beetle GLS 1.8L Shifting VIN: 3VWDD41C51
Hello IATN fellows: got this Beetle that is giving me new problems after replacement of parts (see repair history), now when cold and placed in Drive transmission bangs and car dies, have to wait until it warms up to be able to put it in Drive or Reverse, then...
2003 Volkswagen Passat GLX 4 Motion 2.8L Heating VIN: WVWYH63B43
Vehicle has no heat Have a vag [...] footwell flap motor.I also might mention a/c compressor is always on.Performed basic settings and out put tests and 00603 keeps coming back so Im sure I need the v85 foot well flap motor,My question is does this cause t...
2004 Volkswagen Beetle GLS 1.8L Stall VIN: 3VWCD31C04
Customer complaint is that car will intermittently stall at stop signs, he also says that just before stalling the low brake pad warning symbol on dash illuminates? I have had the car in shop twice now with literally over 100 MILES of drive time with no issues... Trouble codes: P0300, P0302, P0102, P1152, P1142, P2279

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2003 Audi A4 Quattro 3.0L ignition switch VIN: WAULT68E13
I disassembled everything and could not verify any problem so I replaced the lock housing (with ign switch). then after reading andrews post about the tumbler I decided to change that too. Im pretty sure it should be fixed at this point. thanks to all who pos...
2007 Audi A6 Quattro 4.2L Mechanical VIN: WAUEV74F47
we never figured out the mileage, the cluster computer showed the same mileage. We did figure out the coolant in the oil. On the back of the heads there is a cam sprocket cover on each side. there is an aluminum crossover tube that bolts to it. There is coolan...
2001 BMW 530i 3.0L Radio VIN: WBADT634X1
Thanks for all the input, the problem was caused by the indash CD unit which is also the tuner unit.
1986 Chevrolet Monte Carlo SS 5.0L Lighting VIN: 1G1GZ37G1G
thanks to all i did find out that the system was opened up.did bleeding proceedure and no light.the reason for not closing this is that the customer had a death in the family an needed the car.came by just a few hours ago and all is well thanks again.
1997 Chevrolet Cavalier Z24 2.4L turn signal brake lights VIN: 3G1JF12T1V
Thank you everyone for telling me that the brake/hazard fuse is supplied by the Batt 2 Fuse. The underhood fuse box was clean and power was coming out of Batt2 fuse and past the junction block. After tracing the wire past the junction block I found that the wi...
1998 Chevrolet C3500 Silverado 5.7L Hesitation, Cuts out, Stall VIN: 1GBGC34R9W
Well, sorry this took so long. The customer was throwing parts at it and ended up putting a ECM in it and it fixed the problem. Runs great. Thanks everyone! Trouble codes: P0300 (Muliple Misfires).
2000 Chevrolet Monte Carlo SS 3.8L dome light
Thank you for all the responded! The problem indeed did lay in the headlight switch itself. Replaced headlight switch and the flicker went away.
2002 Chevrolet Suburban 1500 LT 5.3L Temperature control VIN: 1GNFK16ZX2
Thank you all for the quick responses. Once I took a look at the temperature readings things became clear. The inside temp read 15C and the outside read 49C! When unplugged it read 10C. New ambient temp sensor and all is well.
2003 Chevrolet S10 4.3L Heater Core VIN: 1GCDT19X33
THANK YOU Bruce from California! After reading all of the great suggestions we decided to try Bruce's suggestion. After replacing the heater core we flushed the cooling system again, installed a "voltage sponge" on the heater core to body ground, installed a "...
2007 Chevrolet Silverado 1500 LTZ 5.3L Excessive Idle Speed VIN: 2GCEK19JX7
Thanks to everyone for the ideas and posts. After going over and over this thing and performing the drive cycle test 3 times. I had my Tech, take his Solus off and use my Verus scanner, which just so happened to have a seperate procedure for KOEO idle relearn,...
2008 Chevrolet Impala LT 3.5L MIL Lamp on VIN: 2G1WT58M08
1992 Chrysler New Yorker Fifth Avenue 3.8L all guages VIN: 1C3XV66L8N
thanks for all the replies regarding this problem. after checking fuses and wiring and connections and finding no problems there i have sent the bcm out for testing and repair. since the bcm for this car is no longer available and used bcm's are few and far be...
2001 Dodge Grand Caravan ES 3.3L heater blower motor VIN: 2B8GP44G41
Thanks for the replies. Yes there is a spot for the little screw behind the cover. Some said to remove the HVAC unit and I can almost see why. But I got lucky and either the factory or this was done before and the screw was not there. Turns out that the hold u...
2006 Dodge Sprinter 2500 2.7L a/c high pressure VIN: WD0PD74486
Thank you everyone. We fix the sprinter. It had a little too much freon. The fan still cycles but not as often after we evacuated about 1/2 pound of freon. thanks for all your help.
2001 Ford Explorer Sport 4.0L MIL Lamp on VIN: 1FMYU70E71
Well guys im not sure if this one is fixed or not. I checked and double checked everyting. The only thing i found questionable was fuel quuality. I told my customer to run it out and fill it up with some good gas without ethanol and try it. I havent seen h... Trouble codes: P0171, P0174.
2007 Hummer H3 3.7L low speed VIN: 5GTDN13E57
I got lucky yesterday,we had a H3 in the lot to compare voltage readings on the low speed and park circuits.The low speed green wire always read batt. voltage when the key was turned on and the wipers would sweep twice then zero when stopped.The park circuit,y...
1997 Jaguar XJ6 L 4.0L instrument cluster VIN: SAJHX6240V
I did check power and ground to the cluster as well as the pcm while driving with multiple volt meters hooked at the same time did not catch the problem on the meters. had to let car go before i got some of the replies so did not get to check the coils. thank ...
1993 Jeep Grand Cherokee Laredo 4.0L No Start VIN: 1J4GZ58S0P
I got 18 quick replies and I want to thank everyone for the help. First I failed to give all my testing results. I did have fuel pressure and injector pulse. I scoped the crank sensor-good. I had a problem with the cam sensor pattern. So after I received help,...
2001 Mazda Millenia 2.3L Hesitation, Cuts out, Stall VIN: JM1TA22241
Thanks guys. This one is fixed. I found that timing belt was 1 tooth off on each cam gear. Installed it properly and it runs great. No more stalling or cutting out. Thanks again!
2005 Mercedes-Benz C230 Kompressor 1.8L lr window
well the problem turned out to be the glass was too tall. It was an aftermarket ppg glass. the part number on the glass matched the r.r. glass but the l.r. glass was approx. one inch taller than the r.r. I found this when I saw that the r.r. window glass w...
2006 Mercury Mountaineer Convenience 4.0L Noise VIN: 4M2EU47E26
hello all techs, thanks you all.the rear rotors is rusted( the e-brake drum)i clean it with coarse sand paper and the noise is gone.about 50 % said ebrake and 50% bearing and inside bearing seals.i thought it was the bearing the way it sound with vibration to...
2005 Nissan Maxima SE 3.5L Lighting VIN: 1N4BA41EX5
Thank you for your replies I didnt fix car customer didnt want to leave the car.He was supposed to bring back but i guess somebody else fixed it.If i get the car back or find out what fixed it i will defenetly update my post. Thanks for all your responses
2005 Nissan Pathfinder LE 4.0L No Start, Cuts out VIN: 5N1AR18U15
Thanks to all for the information. The ecu relay was bad. Nissan insisted that ipdm and reflash was needed. They also stated that we could not buy the relay. That was not true, relay was purchased from another dealer and all is well, THANKS FELLOW TECHS Trouble codes: P0725 (Engine speed sensor).
2001 Saturn L300 3.0L Heater VIN: 1G8JW54R41
Thanks for everyone's input. The problem wound up being pieces of RTV sealant that collected in the heater core possibly from a past thermostat installation that floated through the coolant system and accumulated in the core. Removed the trash and heat is blo...
2000 Volkswagen Beetle GL 2.0L Clutch
Thanks very much all... I did go with the LUX kit in the end, i did everything as a kit which made for a nice day and a happy customer... Thanks again, have a great weekend!
2000 Volkswagen Jetta GL 2.0L No communication VIN: 3VWSA29M1Y
Sorry for the delay on closing, been out of town off and on for the past few weeks. To sum it up, a lot of you guys had some great replies. It actually ended up being the Instrument Cluster would not convert CAN data through the Gateway Into K-LINE data for th...
2004 Volvo V70 2.5T 2.5L rr wiper, defrost, center brake light VIN: YV1SW59V24
Everything works now with the exception of 3rd brake light. Wiring dosn't show it running through top most shunt; however, upon replacing shunt we got power to the light but now enough to power it. Customer declines REM just to drive the light chimpsel. Though...
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