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Prev Professional Automotive Repair Technical Discussions for November 7, 2012
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Open Help Requests for All Makes and Models
Help Request Answers
2001 Audi A4 Quattro 2.8L Obd2 Plug VIN: WAUDH68D71
We are trying to smog this car and the smog machine can not read the rpm and codes from the obd2 plug.checked all fuses and the wiring to the plug .the radio is the factory radio the codes can be read the car not running.
2005 BMW 325i 2.5L No Start VIN: WBAEV33415
Could use a little extra help on this one guys. Car has been in several times over the last 8 months or so for a no start when outside temps are below 40 degrees or so. The car will crank but not attempt to fire. The customer says the car will always start lat...
2003 Buick Century Custom 3.1L fuel and temperature lights VIN: 2G4WS52J43
Customer complain is as follows-the low fuel light and high temperature light come on intermittantly even though the fuel and temperature gauges show that all is well. Can not replicate the problem/condition when the vehicle is in the garage.
1992 Chevrolet K3500 Cheyenne 6.5L Unknown VIN: 1GCHK34F9N
Help from trans techs... I am not a transmisson tech but I told customer I would "look at it" for him... Anyway, when you come to a full stop and then proceed {as from a stop sign} the transmission is always in second gear for a split second and then shifts to...
2002 Chevrolet Silverado 2500 HD 6.6L monitor not running VIN: 1GCHK23172
there was a p0401 egr code and a p0380,glow plugs.I cleaned the maf and so far replaced 4 glow plugs drivers side.The egr monitor is not running.I hope someone can give me heads up on the enableing criteria.I used to work at G.M. but no longer have the S.I. av...
2004 Chevrolet Silverado 1500 LS 5.3L Mode Actuator VIN: 2GCEK13T34
My customer stated that her system is stuck on defrost. I found code B0263 and when I clear it the mode actuator dose a full sweep range of motion then stays at defrost and sets the same code. I clear the code and it dose the same thing. I'm a bit lost. The fu...
1999 Chrysler 300M 3.5L Unknown VIN: 2C3HE66G5X
I have a 300M that the blend door acts intermittent. If you go from Lo to high it will pause at around 75 then start to move again at 85 but not consistantly. I cannot hold back the actuator when it does move. A code for feedback is present and TX failure. If ...
2002 Chrysler Town & Country (Van) Limited 3.8L Low Output Temp VIN: 2C8GP64L32
The customer complains that heat is only lukewarm,even if he manually sets electronic climte control to high on passenger and drivers sides.system has always been maintained(cleaned ,flushed,refilled with new coolant.heater core does not seem to be blocked aft...
2003 Dodge Durango SLT 4.7L MIL Lamp on VIN: 1D4HS48NX3
Vehicle sat on lot for months before new longblock was installed. After install and break-in of engine, the vehicle test drove great. After multiple key/drive cycles, a p0171 code was set. Fuel pressure good, O2 switches correctly, and followed the rest of the... Trouble codes: P0171
2008 Dodge Sprinter 2500 3.0L low power VIN: WD0PE84548
see repair history. code 2043 cam signal & p0299/p2359 underboost codes come in at random with 2853 undocumented code. when underboost code would come in at random engine went into limp mode.stop & restart engine & you might drive 500 miles before happening ag...
2009 Ford F-350 Super Duty FX4 6.4L oil and coolant VIN: 1FTWW31R89
Vehicle came in with low coolant level and high oil level. Did a block test to see if there was compression gases in the coolant, none were present. Oil was in the coolant and coolant was in the oil. We changed the oil cooler, let the vehicle sit overnight and...
1998 GMC K2500 Sierra SL 6.5L Misfire, runaway VIN: 1GTGK29FXW
This truck became our snow plow truck 2 years ago after entering our Vehicle Donation Program with 400,000km on it. This was a very dirty work truck. At first we had intermittent stall and no start until we installed a new PMD. Everything was fine until the en... Trouble codes: P0219 (Engine overspeed)
2004 Honda Pilot EX 3.5L Misfire VIN: 2HKYF18694
Car misses at idle.idle it up and misfire smoothes out.over time it throws misfire codes for all cylinders except # 1. Customer replaced plugs has ngk iridium plugs in it.can swap plugs injectors coils with # 1 still have same changes after moving par...
2001 Hyundai Accent L 1.5L Cuts out VIN: KMHCF35G31
Customer complaint of poor operation cold.It misfired terrible and ckecked plugs and 2 were carbon tracked bad and ignition wires oil soaked and swelled.Replaced plugs and wires and it idles great cold but as soon as you try to accelerate it stalls or just sta...
2005 Isuzu N NPR 6.0L Left turn signal VIN: 4KLB4B1U45
Hello everyone got what I think is a weird one. I have no left turn signal at all. Right turn works just find as do the hazard flashers. All bulbs are good (same ones as the hazards). I have taken the turn signal switch out for testing yet. I got [...] to ...
2005 Jeep Grand Cherokee Laredo 4.7L No Start, Stall VIN: 1J4HR48N35
Hi guys! Thanks in advanced for your help! I have this 2005 Jeep Grand Cherokee with a 4.7L v8 here that will randomly die when driving. Sometimes it will start back up and other times it will not. Scan data shows all the sensors at 5v. I checked all grounds f... Trouble codes: P0406, P0113, P0118, P0108, P0123
2006 Jeep Wrangler X 4.0L Shifting VIN: 1J4FA39S96
Customer brought this Jeep in and stated that he had hit a bump a couple days prior and that sometimes it would not shift into overdrive. The codes retrieved were P1790(fault after shifting) P0720(output speed sensor) and P0736(error in reverse gear ratio). We...
2005 Kia Sportage LX 2.0L Compressor VIN: KNDJF72485
A/C compressor not coming on
1998 Lexus GS300 3.0L cam timing VIN: JT8BD68S6W
im installing 2 new cams in this 98 gs 300 with vvti a quick question because i cant find it anywere? the intake cam is iinstalled now and sence the vvti pully moves approx 30 degrees in either direction is the dowl pin for the cam supposed to be stright up? i...
2003 Mazda Miata 1.8L evap monitor wont ru VIN: JM1NB35333
Hi Mazda Techs, We have an 03' miata here that came in with a p0446 code all monitors passed and mode 6 data ok we repaired the problem we found but cant get the evap monitor to run. We tested the gas cap and smoked the system. Cap was ok but smoke came out ... Trouble codes: P0446
2005 Mercedes-Benz C240 2.6L No Start VIN: WDBRF61J45
Towed in for no start, no codes present. Replaced crank sensor and found car would start only by holding gas peddle to floor. Once started and warmed up, the car will start and run all day albeit at a rich condition. In summary,flooded condition upon cold sta...
2005 Mercedes-Benz S500 4Matic 5.0L Suspension VIN: WDBNG84J35
Hey guys this S500 has got me stumped... I can pull suspension codes but I cannot get a description- The code is C1517-66... I know the C1517 is a suspension fault but the 66 part I cannot find out what it means, this car is too expensive to guess at compresso...
2005 Mini Cooper S 1.6L Lighting
brake lights come on by them selfs and won't turn off emergency flasher come on by them selves, turn signals wont turn off some times, turn off the car off the tail light go on . turn off switch and they go back on stereo volumn some time full on or no volumn.
2005 Nissan 350Z Grand Touring 3.5L convertible top VIN: JN1AZ36A75
We are having trouble getting this top to operate. It will release the rear latch but it will not lift the rear bow (bow number 5) We have checked the operation of every micro-switch. We checked the rear latch. The 5th bow actuating motor will work if we power...
1996 Oldsmobile Cutlass Ciera 3.1L Vibration VIN: 1G3AJ55M2T
Upon hard acceleration, (passing or on-ramping) there is a knocking sound and vibration. Have replaced plugs and wires and fuel filter. Fuel pressure good. Found a little play in inner right cv joint, replaced shaft--no change. Can get same effect on lift with...
2003 Pontiac Grand Prix GT 3.8L Blend Doors VIN: 1G2WP52K23
Car came in with complaint it would blow only cold air no matter the temp selection. Car has manual HVAC controls with the dual zone temp control. Air flow volume is good when cold is selected, but flow drops significantly when selecting heat, and temp does no...
2001 Porsche Boxster Roadster S 3.2L engine VIN: WP0CB29881
customer states the car just started smoking while driving.we got the car in checking found excessive smoking and oil driping out exhaust pipes at flange engine has no noise and runs smooth.not to familiar with these cars at all.just wondering is this a common...
2003 Subaru Forester XS 2.5L Misfire VIN: JF1SG65693
This car has an intermittent problem. The customer called and said she went to start it that morning and it started but ran real rough. She took another car to work. When she got home, she tried it again, it backfired and then ran smoothly. She was scared to...
2002 Toyota 4Runner SR5 3.4L transfer cas VIN: JT3HN86RX2
Thanks in advance,this four runner when engaging the 4wd the transfer case engages for half a secound and then disengages. Unable to access any codes or communicate with the transfercase ecu. Thinking a gear must have stripped we removed and disassembled found...
2009 Volkswagen Tiguan SE 2.0L Misfire, MIL Lamp on VIN: WVGBV75N99
Vehicle initially came to the shop with the customer complaining of the cel on and intermittent rough running. We connected our scan tools and found p0300, p0301 and p0304. The first thing we did was clear the codes and was able to drive the vehicle for 10-12... Trouble codes: P0300, P0301, P0304
2005 Volvo XC90 2.5T 2.5L valve cover VIN: YV1CM59245
We can't find the procedure for replacing the valve cover gasket no data says it takes 11 hrs is that right? Do we need special tools?
2008 Volvo XC90 3.2 3.2L MIL Lamp on VIN: YV4CZ98298
Hello, This Volvo is driving us crazy. It came in as a no start with no fuel pressure. It had a variety of codes in it at the time including both a fuel pressure too high and a fuel pressure too low. It also had rich codes. We replaced the fuel pump and that... Trouble codes: P0088 (Fuel Pressure Too High), P0172 (System too rich bank 1), P0175 (System too rich bank 2)

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1993 Acura Integra RS 1.8L Poor Idle Quality, Hesitation, Cuts out, Stall VIN: JH4DA9442P
CHINGAU means DAMMMMIT in, i did almost everything to this car, alot of you n my self thought it was secondary igntion problem u were right i did check the distributer it was fine & wires but not the spark plugs,didn't check further cuz I asked m...
2002 Acura MDX 3.5L compressor clutch VIN: 2HNYD18242
Hello gents, Well, the vehicle is fixed. Sorry for the long delay, but our customer was out of town. So the vehicle came in last week for me to do some more testing on it, and I did a few things which led me to the fix. First off, I switched the relays once...
2005 Acura RL 3.5L Keyless Go/Start VIN: JH4KB16535
I appreciate all the responses. The Solus Ultra couldn't see the MICU/keyless start module and the Launch could see it but as usual was a 50/50 shot at sucessful programming (negative in this case). Not having an HDS/factory scanner I had to send it to the loc...
1999 Audi A4 2.8L No Start VIN: WAUED28D0X
Again thanks for all the help. Sorry took so long to close. Found tne reason for no poer to fuel pump was the relay box had burnt wiring behind it, repaired that replaced the pump relay. Got power to pump but pump was shorted intrnally as was overloading the c...
2002 Audi A4 1.8L exhaust type noise VIN: WAULC68E42
Wow what a response, Thanks to all that replied, the genenral consensus was that the noise was "normal" The customer is happy w/ that responce and is going to keep an ear on it.Thaks again to all who took time to help. Thanks, Ron
1998 BMW 740i 4.4L pass seat sensor VIN: WBAGF8321W
Thank You gentlemen for the help ! Almost unanimous for replace the sensor mat. I did unplug and clean connections (was a natural while testing)but the light came right back on. Replaced both the sensor in the seat and the module under the seat cushion. The mo...
1999 Buick LeSabre Limited 3.8L Fuel Pump,Dr.Seat,Dr Window VIN: 1G4HR52K8X
Thanks for all the replies.Almost everyone nailed it...Ground splice pack under carpet corroded.Thanks again iATN members
1996 Chevrolet Blazer 4.3L Stall VIN: 1GNDT13W8T
Hey Thanks for all the info! I got some really good ones, like ckp sensor connector full of oil, it was ok. Than check the egr valve for carbon build up, which was ok too. Also check the os2 sensors, which are a little on the lazy side, but so far the cel is n...
2000 Chevrolet Malibu 3.1L Poor Idle Quality, Misfire VIN: 1G1ND52J8Y
Hi Guys, Thanks for all the great suggestions. We discovered a worn cam shaft. The customer declined the repair Trouble codes: P0300 (Random Missfire).
2001 Chevrolet Silverado 2500 HD 8.1L intake bolts VIN: 1GCHK29G21
The customer is going to try shorter intervals and keep and eye on consumption, if it is still bad we will do the intake gaskets. Thanks for the help
2001 Chevrolet Malibu 3.1L radio/clock VIN: 1G1ND52J01
This is a summary of the replies "look for signs of rodents bedding in the area" - "had one on a silverado that did the same thing-was a bad radio - "another tech mentioned the radio being the problem "do the pwr windows work with the radio turned on?indicatin...
2004 Chevrolet W3500 Tiltmaster W3S042 4.8L Engine VIN: J8BB4B1454
2008 Chevrolet Silverado 1500 WT 5.3L No Start VIN: 3GCEC13018
thaks for the replies. Well we cleaned all grounds, check battery cable ends, even drilled hole in battery cable ends in the middle of the crimped ares. Heated and soldered orginal cable ends to be sure. Check history sales on the body control module, found th...
2002 Chrysler Town & Country (Van) LXi 3.3L hard start VIN: 2C4GP44342
Thanks for all the great help. The cam and crank did check out ok, and the plugs and wires checked out good. The fix ended up being a new O2 sensor and let the ethanol value relearn itself by running it for a bit. I just didn't give it enough time to learn, an...
2003 GMC Envoy SLT 4.2L all lights VIN: 1GKDT13S63
I have checked all that most of you recomended. No change. I was aware of the tsb for the truck. Customer is living with issue. Can't call it fixed... Thanks to all who responded to this request.
2006 GMC Sierra 1500 SLE 5.3L MIL Lamp on VIN: 1GTEK19Z16
First i would like to say sorry for the hold up. I replace the maf sensor with a oem part and that did the trick. thanks iatn is priceless. Trouble codes: P0172, P0175.
2006 Hyundai Sonata GLS 2.4L Hesitation, MIL Lamp on VIN: 5NPEU46C36
As I mentioned, the steering wheel being off center and the ESC light on the dash were related and were due to me when I pulled the dash. However, the accelerator codes were not do to me. I replaced the accelerator pedal and all is well with the car, just ba... Trouble codes: P2127 (TPS/APS E circuit low), P2110 (ETS System Malfunction).
2007 Mazda CX-7 Touring 2.3L Misfire VIN: JM3ER29307
found bad injector for cylinder one customer has decided to not repair the car because of its history with timing chains and the cost of other repairs preformed is not cost effective to continue to fix this lemon Trouble codes: P0300, P0301.
2000 Nissan Maxima GLE 3.0L Speedometer VIN: JN1CA31DXY
Thank you all who responded you where all correct the problem was in the speedometer again IATN is the best!!
2003 Subaru Forester X 2.5L unable to fill fuel tank VIN: JF1SG63653
Thanks for all of the replies and several of you nailed it. The fix ended up being the large vent valve on top of the fuel tank. We were able to drop the tank and the rear diff down together enough to replace it despite the rust although we are in the process ...
2004 Toyota Prius 1.5L No Start VIN: JTDKB20U64
thanks for the replies the smart key did have a new battery and i did check the neg cable to ground was good. Well what i found is when it would do nothing softly hitting the dash were the key fob is inserted and wow everything started working. i removed the ...
2007 Toyota Tundra SR5 5.7L No Start VIN: 5TFRV541X7
Thanks for the quick responses. I completed teseting for all power and ground circuits to ecu. It has every signal it needs to power up but doesnt, just got off the phone with Toyota, ecu is on national backorder. I feel confindent after replacement and progra... Trouble codes: U0100.
1999 Volkswagen Beetle GLS 2.0L Water pump VIN: 3VWCA21C7X
Most of the replies had experienced very few failures with these pumps. It must be something in the water up here. Many of you told us to make sure we use new VW [...] coolant ( we do). Make sire there are no misalignment problems--None evident Was there ...
2003 Volkswagen Passat GLX 4 Motion 2.8L rear hatch VIN: WVWYH63B93
well to start with. Thankyou all for your time. according to dealer this car "wagon" isnt designed to physiclly pop the rear hatch opeon with the door button or remote just unlock it.the owner says diffrent. So mabie i was chasing a ghost. so the next 2003 wag...
1997 Volvo 850 2.4L Starting VIN: YV1LS554XV
Got this one figured out. Spent a good portion of the day yesterday tracing wiring on schematics and looking for how power is distributed on this vehicle. Justin was correct and this ended up being a bad 2/31 (106) overload relay. Checked for constant power a...
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