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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 28, 2012
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for All Makes and Models
Help Request Answers
2002 Audi A6 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on, VIN: WAUJT64B72
Car came in running rough with misfire codes. My gut told me to pull the plug off the mass airflow meter and the car immediately smoothed out. Plugged back in and it kept running smooth. Road test and parked until new Maf. Went to pull back in and running bad ... Trouble codes: P0300, P0301, P0303, P0304, P0306
2000 BMW 323i 2.5L Unknown VIN: WBAAM3349Y
hi BMW Techs, I have a 323i here that has poor heat fromt the center and outer vents. I have made sure that cooling system is purged of air by using an airlift refill unit. scanner shows coolant temp at 202 degrees f. temp at t-stat housing is 178 f. floor ...
1996 Chevrolet K1500 Suburban 5.7L No Start, slight bump at idle VIN: 3GNFK16R7T
came in as a no start with no fuel pressure replaced pump has pressure was a hard start but got started. and drove fine car got cold and now will start first time, if you turn it off right away (before it gets warm) and try again it is 50/50 on the second star...
2007 Chevrolet Equinox LT 3.4L Idles too high VIN: 2CNDL73F97
After replacing the throttle body this vehicle now has a high idle condition. No codes are stored. I performed a couple different idle learn procedures that I found on-line. The pcm is calling for 720 rpms, the engine is idling at 1500 rpms. The tps reading at...
2005 Chrysler 300 C 5.7L No Start, Stall VIN: 2C3AA63H65
Vehicle came in on the wrecker. customer stated vehicle would not start. Customer stated that vehicle will always do this when you fill the tank up full of fuel. Customer usually just drives vehicle around to get fuel level down and it will start. When vehicle... Trouble codes: P0406 (EGR Signal Circuit High)
2002 Dodge Caravan Sport 3.3L No Start
I cleared the pcm and now the engine will not start. I have no dash function at all. no wiper control. I have replaced the ignition switch, pcm and body control module.
1999 Ford Contour SVT 2.5L head gasket replacement VIN: 1FAFP68G9X
I am trying to decide whether to do head gaskets on this car (out of towner/traveler). It is the DOHC SVT engine and I am not seeing what I feel is the complete repair. It would appear the front cover has to come off to stabilize the timing chains- repair proc...
2000 Ford Mustang 3.8L parking lights VIN: 1FAFP4043Y
I have tried everything to fix this and Im at a loss. The car has no park lights,tail lights, or license plate lights but it has dash lights, head lights, turn signals and brake lights.The wiring diagram I have shows the brown wire coming out of the headlight ...
2001 Ford Crown Victoria LX 4.6L No Start, Cuts out, Stall, MIL Lamp on, red temp light VIN: 2FAFP74WX1
Issue: Once car warmed up either at idle or driving, car will drive normal them RED TEMP light comes on dash, CHECK ENGINE flickers and car shuts off or cuts out for second. Sometimes will restart right away or may need to sit for few minutes. Once intial stal... Trouble codes: U1262
2004 Ford F-150 Lariat 5.4L Cam phaser VIN: 1FPTW14514
High everyone, replaced cam phasers on this vehicle because making the usual ticking noise, now engine will not idle when warm and makes a horrible rattling sound when is about to stall, below 500 rpm, also when it turns over to start it sounds funny like low ...
2006 Ford E-350 Super Duty 6.8L Stall VIN: 1FTSS34SX6
Having I problem with van when idles over ten minutes it dies and has low idle,it dies but starts right back up .When driving and coming to stop idle is low.Throttle body was replaced about a year ago for similar problem and was getting check engine light at t...
2007 Ford Explorer Sport Trac Limited 4.6L Shudder VIN: 1FMEU53827
Hello fellow techs and thank you in advanse for any help givin. We have this sport trac 4X4 that has a shudder @ 42-44 mph. This happens while driving @ a steady speed and will also hapen SOMETIMES when you lightly press on the acc pedal. It feels like a dri...
2012 Ford F-550 Super Duty Lariat 6.7L Aux SWitches VIN: 1FDUF5HT6C
Hi all. I just got a 2012 f550 service truck in the shop.It's going to be my new ride in the field and I need a little help locating a few wires.I need to install a strobe light and converter before they'll let me on the road.My question is where are the axill...
2002 Honda Odyssey EX 3.5L Trans In Limp Mode VIN: 5FNRL18092
This Odyssey (appropriate name at this time) originally came in with a transmission that had no 3rd gear and occasionally would set an 3rd gear pressure switch code. No surprise here the 3rd gear clutch fails etc... Customer decided to replace transmission wit...
2002 Infiniti I35 3.5L MIL Lamp on, Pings VIN: JNKDA31AX2
Codes P0011 and P0021. Cleared codes and monitored cam solenoid duty cycle and position while driving around. At idle both cams are around -30 degrees with duty cyle at 0%. Cruising cam position is arond +50 degrees with duty cycle around 50% for both banks. T... Trouble codes: P0011, P0021
2004 Jeep Grand Cherokee Laredo 4.0L Evap VIN: 1J4GW48S74
First off, I want to appologize ahead of time for my ignorance of this system. Customer comes in for state inspection sticker and of course the check engine light is on. Find code for large evap leak. Ok simple enough, go to hook up smoke machine and oops it h...
2004 Jeep Liberty Limited 3.7L Front brakes VIN: 1J4GL58K74
Customer stopped by the other day and both front brakes were dragging. After cracking open a bleeder screw they both freed up. The brakes were applying and releasing fine at the time. The customer said it happened one time after that, then they just freed up b...
2001 Lexus GS300 3.0L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: JT8BD69S51
Hey guys, I could really use your help here- this car is giving me a problem. I have inherited this car- I wasn't the tech initially involved. This car is from our dealer used lot. Car was brought to us for the CEL being on. Apparently the initial codes were... Trouble codes: P0300 (Random misfire), P0301 (p0302-), P0302 (p0303-), P0303 (p0304-), P0304 (P1349- VVT System Malfunction Bank 1), P1349 (VVT System Malfunction Bank 1)
2003 Lincoln Navigator 5.4L Air bags VIN: 5LMFU27R83
having problems with the susspension airing up. Compressor, relay, and fueses are all good. the front well air up very slowly but the rear well air up after 3 to 4 hours later.We have checked wireing diagrams and they are not compatible with this vihicle. diag...
2002 Mercedes-Benz E320 3.2L hood release VIN: WDBJF65J32
this car had a minor bump in frt of car but now the left side of hood pops up but not the right side,is there any way to release the hood latch without a cutting torch/holesaw??? any tips would be much appreciated!!!
2005 Nissan Altima SE-R 3.5L No Start VIN: 1N4BL11DX5
Hello All, Customer came in with no start. He lost his key and went to the dealer to get a new one. They cut according to VIN and key doesn't turn ignition. Dealer began to check and said give us several thousand and we'll fix it. Car is 2002 with 2005 bcm, ec... Trouble codes: P1614 (Nats malfunction), P1001 (CAN comm)
2005 Nissan Xterra Off-Road 4.0L Oil Pressure VIN: 5N1AN08W55
Oil Pressure is over 100 PSI at idle. Double checked with mechanical gauge. Installed new pump and performed oil change. Had pan off and see no problems. Where is the relief valve? Is it in the pan or the oil cooler? Does that sound like where we should be loo...
2002 Pontiac Bonneville SE 3.8L Starter VIN: 1G2HX54K52
HI. I have this bonneville that will not crank over. if i apply power to the starter solonoid starter works fine. i grounded the starter relay and starter works fine. i connected scanner and checked for antitheft code or disable problems. no codes or problems ...
2001 Subaru Outback Limited 2.5L 2-3 shift VIN: 4S3BE686X1
Hello, This Subaru came in with an AWD inop. and some times binding complaint. The transfer section was totally spent and needed rebuilding. The customer chose to replace the entire trans with a used unit as the cost was less. Ok I replaced the trans. What I'm...
2000 Toyota Tundra SR5 4.7L No Start VIN: 5TBBT4413Y
I have unplugged all sensors, injectors and coils 1 at a time to the engine and trans looking for a possible short to the ecm, no change to the missing crank signal. I have verified all pin voltages at the ecm in the koeo and the koec possitions including the ... Trouble codes: P0335 (Crankshaft sensor signal)
2002 Volkswagen Passat GLS 1.8L Brakes VIN: WVWVD63BX2
Hello VW guru's We need help with this VW Passat.It first came in with complaint brakes were locked up.After looking through IATN bulletins I found several cases with a bad brake booster. We replaced the brake booster (had water in it) and also the master cyli...
2003 Volkswagen Beetle GLS 1.9L Water pump VIN: 3VWCP21C33
Help! I have a second pump failure in 19,000 miles, both due to leakage. (NOTE: This is NOT an impeller low/no flow issue!) It's most definitely a pump seal leak, NOT a failure of the pump body o-ring, and so was the last one. I've never had a one time failure...
2005 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWAD63B45
I continue to get a check engine light on i have smoked engine and checked fuel psi and check the pcv system and replaced maf. About every 2 weeks light comes on. test drove and watch the fuel trims -7.0 to 4.9. The code that turns on the light is 17544, p0171... Trouble codes: 17705 (pressure drop between turbo and throttle valve), 16684 (random misfire detected), 16685 (cylinder number 1 misfire), 16686 (cylinder number 2 misfire), 17544 (fuel trim bank 1 system too lean), 17519 (o2 sensor regulation bank 1 no signal no commuiction system)
2006 Volkswagen Passat 3.6 3.6L abs VIN: WVWFU73C26
The vehicle original came in with abs/epc lights. Scanned and got some codes. We ohmed the right front and left rear abs sensor and had no ohms. replaced the sensors and clear codes. Everything was okay for about 2 days and The same codes came back..?? Clear c...
2013 Volkswagen CC Sport 2.0L Tail Lights VIN: WVWRF7AJ4D
This vehicle is a gti r20t, installed customer oem europe led tail lights with harness adapters. Nice lights, nice installation. Problem is i need to change coding in 09 central electronic module. Using vds no problen finding 09 and code adapting. Light manufa...
2000 Volvo S40 1.9L Incorrect data VIN: YV1VS2551Y
Good after Saturday noon. Well the holidays are here and so is the weird. I have this S40 that has sat for a couple months while the customer was off island. Complaint was for a brake issue. Turns out the check valve in the hose to the booster was bad. Repair ...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1997 Audi A4 2.8L Heater
Thank you all for taking time to try and help me. As suggested by many I flushed out the heater core which helped but didn't cure it completely. I checked hose temp with an infared temp gun and had 170 in and 105 out which was suggested that the core is defi...
2003 Chevrolet Silverado 1500 5.3L supplemental brake assist VIN: 1GCEK14T83
We checked all the wiring again,and followed Long's procedure too """Go back to the SBAM, KOEO should have B+ on Pin B(Pink wire); Pin A(Black) and Pin C(Black/White) are the ground. Pin D(Black/White) that goes to the alternator regulator for a signal wit...
2003 Chevrolet Impala LS 3.8L battery VIN: 2G1WH55K93
Thanks for all the suggestions. I knew there was a parasitic drain on the battery and was in the process of tracking it down when the customer called and said she had arranged to trade it in for a new car. Hate i wasn't able to find the source of the problem.
2004 Chevrolet Tahoe LS 5.3L 4wd VIN: 1GNEK13Z84
Sorry I took so long on this one. We have potentially fixed the problem. We put a new cluster to repair a different problem and that seemed to repair the 4wd problem. It has been over a week and the customer has not called back to say that the car has acted...
2006 Chevrolet Impala SS 5.3L trans VIN: 2G1WD58C66
THANX for all the replies.i guess i needed a break away from this one.got back on it today and lo and behold i screwed up.the ebcm red retainer stayed in the module and when i plugged it back in the hi buss terminal bent over.causing a open buss line.all is we...
2004 Chrysler PT Cruiser Limited 2.4L Misfire VIN: 3C8FY68814
Well this one is finally gone. I got an e-mail from Nathan Diehl that said he had an identical problem and tightening the pins on the coil connector had taken care of it. When I went to tighten the connector pins I noticed that one of the ground side pins bac... Trouble codes: P2305 (Ignition Secondary circuit insufficient ionization).
2005 Dodge Neon SXT 2.0L MIL Lamp on VIN: 1B3ES56C95
It seems this car is fixed. After removing battery cable for a while code has not come back Thank you for all your help. I hope all of you had a great holiday and a happy new year. Trouble codes: P2096.
1999 Ford F-150 Lariat 5.4L No Start VIN: 2FTRX18L4X
Thanks for the quick response. Unanimous opinion is that it needs the programming parameters reset, aftermarket scan tools don't do it, so this one is headed to the dealer. Some responses said a good locksmith can do it, in our case it's cheaper to tow it to t... Trouble codes: B1342 (Faulty Control Module), P1260 (Theft Detect Engine Disabled).
1999 Ford F-250 Super Duty Lariat 5.4L overcharge/flicker VIN: 1FTNX21L9X
First, thank you all for your replies. Many of you pointed to wire connections or grounds. The problem ended up being the power wire to the regulator, terminal A O/LB wire. It had a poor connection where it spliced with the main power wire near the starter sol...
1996 Honda Civic DX 1.6L friction disc VIN: 2HGEJ6342T
Despite the many thoughtful replies I received no one has been able to answer the question that prompted this request: did the factory installed clutch slip because a) the belleville diaphragm spring was too weak or b) dirt in the hydraulic prevented the slave...
2004 Isuzu NPR 4.8L Misfire
ok still wating on customers decision. what we found with a tech2 scanner was bad injector and pressure regulator sensor. thanks everyone for helping out.
2001 Lexus IS300 3.0L Misfire
I went back through it, Installed iridium plugs, replace two: ne upstream and one down stream O2 sensors that were setting codes for open heaters (I don't see how these were causing a miss fire). Another road test and all seemed well! I delivered it to my cu...
2002 Mercedes-Benz SLK32 AMG 3.2L No Start VIN: WDBKK66F42
We end-up sending to a Mercedes Specialist due to our aftermarket scanner does not have the necessary means of checking the DAS system. Since both keys didn't work. My guess was either the key ring or the DAS Module was bad. The diagnosis from the specialty... Trouble codes: P2071 (P2071-72 start enable of das not sent check fault messages in control module ezs), P2601 (Event the voltage supply of circuit 87 has over voltage).
2003 Mercedes-Benz E500 5.0L esp, bas, abs traction control VIN: WDBUF70J73
Well this one is fixed and down the road. I can't believe it but it was a tire that was the wrong size on the vehicle. All the tires should have been a 245/45/r17 but someone put a 245/55/r17 on the right rear tire. I was walking out of the shop one night and ...
2005 Mercedes-Benz ML500 5.0L Excessive Emissions, Surge, Cuts out, Stall, MIL Lamp on VIN: 4JGAB75E55
Hey Guys Thanks for the reply's. I sent this one to the dealer. I smoke tested the intake system and found no leaks. Fuel trims looked normal when the car was running right and no obvious things to check. Pinned out all wires from the Air Flow sensor back t... Trouble codes: P0104 (Hot Film Mass air flow sensor check signal line voltage).
2007 Nissan Murano SL 3.5L MIL Lamp on VIN: JN8AZ08W57
It would appear that this vehicle had a ghost in the machine.After all the testing we done on vehicle the customer came back to say everything had been working fine with no return of service engine light.Will have to conclude there might have been a loose conn... Trouble codes: P0463.
2008 Pontiac G6 GT 3.9L Keyless Entry VIN: 1G2ZH36138
Customer has not returned yet. I Will post results, when they return
2009 Pontiac G5 2.2L valves VIN: 1G2AS18H09
The warranty company would not pay for the repair of the vehicle, told us to put car back together and send to dealer because it has a 5 year 100,000 mile powertrain warranty. We in the shop had concluded that since there was a problem in the performance of th...
2010 Subaru Outback 2.5i 2.5L judder/stall at stop VIN: 4S4BRBJC3A
Thanks to all that replied. I called a Subie dealer and the shop forman told me that he had two like that under warranty. Subaru had them perform some tests then replace the trans. My customer felt he had recourse with Subaru on a two year old car so he took i...
2003 Toyota 4Runner Limited 4.0L 4wd VIN: JTEBU17R93
First,thank you to the 3 replies,the company that rebuilt the first transfer case installed a used actuator,we payed for a new actuator. 1 week later t-case(new actuator) re-installed,sync t-case and front diff actuator,works like a charm. Thanks again for the...
2002 Volkswagen Jetta TDI 1.9L Hesitation, MIL Lamp on, Low Power VIN: 3VWSP69M52
Well gents, this one is fixed. First of all I appreciate all the responses out there. Especially from Mike from NJ, he was a huge help in understanding how these animals think. To start off, I rechecked everything I had fixed or checked. To the customer's requ... Trouble codes: P0234 (Turbo Over Boost).
2004 Volkswagen Jetta GLS 2.0L No Start
new pump installed today problem solved upon further investigation found screen had a hole in it that lined up with first fuel pump looks like our tech missed when installing the turn to lock and caught the screen pump worked well with full tank but no suctio...
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