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Prev Professional Automotive Repair Technical Discussions for October 1, 2013
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Open Help Requests for All Makes and Models
Help Request Answers
2006 BMW 530xi 3.0L Engine VIN: WBANN73586
This car belongs to a very good customer. He is using 1 quart of oil per 1,000 miles. We have only been using BG full synthetic 5w-30 oil. This car has no dipstick, just a sensor in the oil pan. We have tested the crankcase vacuum and it is within spec of TS...
1996 Buick Regal Custom 3.8L Stall VIN: 2G4WB52KXT
Got code 102 MAF Circuit Low Freeze frame data showed engine rpm around 1200 but TPS is 100%. So replaced TPS with OEM figuring it was telling the computer we should have a lot more air volume because we are WOT when in reality it was only around 10% or so. ...
1994 Chevrolet Camaro Z28 5.7L Lack of Power VIN: 2G1FP22P6R
Car arrived 6 months ago. Customer had just purchased private party and was told engine was fairly new. He was experiencing intermittent stalling while driving. We pulled car in and noticed engine seemed very hot and found low on antifreeze, gauge did not read...
2000 Chevrolet Blazer LS 4.3L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1GNDT13W6Y
Hello fellow techs and thanks in advance for taking the time to read and help us, this vehicle came in with the typical intake gasket leak and cold start misfire. vehicle has 150k miles on it and never had a the MFI unit replaced, suspected faulty poppet. whe... Trouble codes: P1351, P0300
2003 Chevrolet Malibu 3.1L Poor Idle Quality VIN: 1G1ND52J63
came in w/hi idle,noticed that not all the starts good n runs good,i scanned it n tps n someting about pedal but this car has no pedal tps.has cable operated accelerator.i replaced tps but still same code n cannot erase no matter what,tried several ti...
2005 Chevrolet Silverado 2500 HD 6.6L power steering VIN: 1GCHK232X5
Customer complaint is steering stiff when making slow speed parking lot maneuvers. Truck is lifted with oversized tires. The truck has been steering fine for two years. Confirmed customer complaint truck will not turn unless moving. Wont turn at all when brake...
2005 Chevrolet C4500 Kodiak C4U042 6.6L Various VIN: 1GBE4C12X5
Asking for help from GM truck tech. This is a plow truck first of all. Of course the customer had several problems. Faulty speedometer, faulty fuel gauge and low voltage reading. Sent instrument cluster out for repair and replaced battery isolator. Speedometer...
2005 Chevrolet Trailblazer LS 4.2L corner brake lights VIN: 1GNDT13S95
have a friends car that the coener brake lights are inop , the high mount brake light works. have power through both stop lamp fuses when brakes applied , have power (12.4 volts)at the rear lighting connectors on the lt blue wires for the brake lights and the ...
2007 Chevrolet Silverado 1500 Classic LS 4.3L No Start VIN: 1GCEK14X07
Truck will start and die at times, don't know history off truck, will set b2958 code. Passlock light doesn't flash. When light comes on and stays on runs fine, and at other times starts like it should and light goes out. Both keys are not original but look lik... Trouble codes: B2958
2004 Chrysler Town & Country (Van) 3.3L Wipers VIN: 1C4GP45R44
Customer had taken vehicle to dealership for problem with wiper blades intermittently stopping in middle of windshield. Dealership said they could find nothing wrong. What I have found is the supply voltage for the wiper motor when properly working is about 1...
2003 Dodge Dakota 3.9L No Start VIN: 1D7HL12X53
no bus only 4,5 volts at at all 5 volt sensors, unplug all sensers on 5 volt circit time out system only 4.5 volts, cut 5 volt wire at pcm ,slillonly 4.5 on pin 17 pcm output,we still 4.5 volts on
2005 Dodge Ram 2500 Truck Laramie 5.9L engine VIN: 3D7KS28C55
Knocking noise more prevalent as the engine get’s to running temp. Have sent off oil sample and it came back, “No Action Required" all wear medals (ppm) normal. The knock can be heard right after the engine is turned off, from underneath the truck it sounded l...
2006 Ford F-150 XLT 5.4L all gauges/power windows VIN: 1FTPW12546
Hi folks! Getting beat up on this,no power windows/radio/gauges and I'm sure others I've not noticed yet. No trigger/switching to acc. delay relay-when I jump the "T" connections and power it up everything works except the gauges-also no power to breaker 401 u...
2009 Honda Odyssey EX-L 3.5L power liftgate VIN: 5FNRL38659
I am not sure if my condition is normal or not. When operating power liftgate by fob or switch on dash park lights flash. This i believe is normal, but i am also getting the center stack lights flashing. They also do this when locking vehicle from fob. Custome...
2003 Hyundai Accent GL 1.6L No reverse VIN: KMHCG45CX3
Hi everybody trying to fix this problem went thru this tranny 3 times with no luck Is anybody had same problem Please help Thanks in advance
2006 Hyundai Sonata GLS 3.3L speakers VIN: 5NPEU46F06
radio makes popping noise over speakers while applying brake and listening to a m radio. any body had this problem? . thought about throwing a brake lamp switch at it, but just wonderd if any one else knows of a fix.
1999 Jaguar XJ8 4.0L Idle oil pressure VIN: SAJHX1040X
It seems that an approximate 100 RPM change between idling in gear and idling out of gear results in the warning light being on (in gear). There is no provision I know of for increasing the idle as the idle speed is controlled by the engin management sysytem. ...
1998 Jeep Grand Cherokee Laredo 5.2L fuse #20 VIN: 1J4GZ58Y3W
vehicle came into my shop on the hook. complaint of crank no start. found number 20 fuse blown, replaced fuse and battery, vehicle left only to return today with the same fuse blown. tried to find what this fuse controls but to no avail. what i really need hel...
2001 Jeep Wrangler SE 4.0L MIL Lamp on, alt not charging VIN: 1J4FA59S51
replaced pcm for no charge condition-works fine for about a week and then quits charging-have checked all wiring to alternator and leak detection pump-replaced alternator for possible internal problem-pcm is reman Chrysler-checked resistance of ldp on car vers... Trouble codes: P0622, P1491
2005 Lexus LX470 4.7L Steering Rack VIN: JTJHT00W75
LEXUS TECHS PLEASE READ THIS ONE !! This vehicle came in for a routine timing belt/water pump/tensioners replacement(battery disconnected during service)no repairs where done to steering system. Upon completion I noticed steering wheel when driving straight wa...
2004 Mazda RX-8 1.3L Poor Idle Quality, Misfire VIN: JM1FE17N54
Check engine light on with the three code. The vehicle had a rough idle and burning white/gray smoke for the first couple minute. The vehicle will start but check engine light will flashes in a few minute and might died on the road. Check spark plug, ignition ... Trouble codes: P0302 (Cylinder misfire detected), P0506 (Idle control system rpm low), P0125 (Insufficient coolant temperature for closed loop)
1993 Mercedes-Benz 500SL 5.0L No Start, Cuts out, Stall, MIL Lamp on VIN: WDBFA67E3P
this vehicle was towed into our shop leaking coolant. it had overheated and would not start for customers daughter. it started immediately and we drove into shop. we pressure tested and found bad water pump. after replacing water pump, hoses, and belt we start...
1998 Mercedes-Benz E320 3.2L Bas /Antiskid VIN: WDBJF65F5W
No codes just bas light and antiskid lights on ,we had a broken switch so we installed a aftermarket switch and the light came on ,so we oredred new from mb same thing no codes
2012 Mercedes-Benz Sprinter 2500 3.0L check engine light VIN: WDZPE7CC2C
we have an sprinter that has low power but has code for po101 mass or volume a/f sensor a circuit range performance could anyone out there help me with this code thanks in advance
2003 Mercury Sable GS 3.0L Stall, MIL Lamp on VIN: 1MEFM55S73
Customer came in with check engine light on and said last night she was driving and vehicle lost power she pulled over shut car off let it sit for a few minutes and restated and it was fine. She also said this happened to her husband about a week ago. Scanned ... Trouble codes: P0191
2007 Mini Cooper 1.6L engine light VIN: WMWMF33567
Hello IATN techs. This one has got me to finally post a help request. the code 278a "fuel mixture adaptation, idling per time unit too rich" will not go away. i cleared it and in about one month it came back. i reflashed the computer per tsb number si m12 04 0...
1986 Nissan 720 2.4L Poor Idle Quality, Surge, Stall VIN: JN6ND16S7G
Vehicle came in with a hesitation and stalling. as soon as you snap the throttle the vehicle stalls hard. kind fo feels like the engine or torque converter locking up. it doesn;t have to be under load it could be in park,neutral or in gear it does the same all...
2006 Nissan Titan SE 5.6L Timing Chain VIN: 1N6BA06A36
Quick question on changing the timing kit on these trucks -- can it be done with the motor in the truck? I've seen the question many times on the web and the answer always seems to be the AllData directions for the change in which the first step is to remove t...
2011 Nissan Maxima S 3.5L Compressor VIN: 1N4AA5AP7B
a/c will work fine wen is cool out side or if is seating inside the shop..soon as car is park out less tha a 1 min.start Blowing hot air or just Cool..if is keep inside of the shop or a cool area Blow freezing all day long!!!Vehicle has been take to the dealer...
2006 Porsche Cayenne S 4.5L Intake VIN: WP1AA29P16
The truck misfires on one bank. So we found that we are getting a lot of oil build up in the intake manifold. We can clean the intake manifold out and the truck will run smooth for a few days until it gets the oil back in there. Mitchell does not have a ton of...
1997 Saab 900 S 2.3L pedal effort VIN: YS3DD38B5V
Verified customer complaint of excessive brake pedal pressure required; brakes cannot be locked, ABS cannot be activated with heavy pedal pressure. With vacuum exhausted from booster, pedal sinks slightly upon engine start. All caipers react normally to pedal ...
1999 Subaru Legacy Outback 2.5L Stall, Misfire, MIL Lamp on VIN: 453BG6854X
vehicle came in couple months ago with code p1507 idle air control valve. diag. system , cleaned intake and installed new iac valve. all good till 3 weeks ago. customer complained of stalling and running rough at times. first time in shop had code p1507 in sys... Trouble codes: P1507
2000 Subaru Legacy GT 2.5L Engine VIN: 4S3BE6452Y
HELP!!! I've got this subaru that's making a very loud clanking noise. Sounds like a broken piston connecting rod. It's very loud and it speeds up and slows down by RPM. We had the car back in to re-bleed the slave cylinder and took it out for a drive and all ...
2006 Subaru Outback 2.5i 2.5L battery drain VIN: 4S4BP61C56
Help, Battery has about 200 mil drain, if I pull fuse #8 a 50amp in engine compartment the draw is gone. The turn signals will work with the key off also on #8. I'm getting the flashig acc and err on radio. We pulled the drivers seat and didn't find any connec...
2004 Toyota Highlander 3.3L engine cooling fan VIN: JTEEP21A44
Radiator cooling fan runs with the ignition off. As soon as you turn the ignition on the fans go off but will come on when the engine gets hot. The problem is with only the radiator fan (the drivers side fan). The condenser fan comes on when the AC pressure ge...
2007 Toyota Sienna LE 3.5L starts then dies VIN: 5TDZK23C97
Was towed in it will start and then dies like immobilizer. To start with the codes that were stored were history codes not current codes. I cleared them and no codes have come back except when I pulled the fuel pump relay it stored a fp relay primary circuit c... Trouble codes: P0138, P0345, P0365, P0390, P0606
2001 Volkswagen Passat GLS 1.8L dash lights,windows,ignition VIN: WVWPD23B51
Car was in the shop a couple of weeks ago for some brake work and when i went to drive the car after the brake work i noticed that when you shut the key off that the car stays running. When i stepped on the brake pedal the car shut off. Customer never complain...
2007 Volkswagen GTI 2.0L MIL Lamp on VIN: WVWFV71K17
Iam getting code p0299 and replaced turbo recirculation valve.Code is coming back.Check recicrulation valve and is clicking and moving as was bypass regulator valve.Using vag and not use to using scan tool.When looking at data actul boost pressure is higher th... Trouble codes: P0299

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2002 Acura MDX Touring 3.5L Differential VIN: 2HNYD18682
Hello to all. I finally decided to move away from possible trans issue and take a closer look at differential assembly (Has 2 electronic lock up actuators on both sides submerged in fluid inside). The fluid color appeared to be very different from genuine VTM...
2002 Audi A4 Quattro 3.0L cam gear bolt VIN: WAULT68E02
it seems i have wasted the time of everybody that read this and also replied. 100 Nm is the correct torque. thank yous go out to everybody for there time. it seems checking the torques bits screws that hold the gear together is a good idea, its not uncommon fo...
1998 Buick LeSabre Custom 3.8L No Start VIN: 1G4HP52K4W
My apologies for not closing this sooner. We did fix the vehicle. All replies are appreciated; in this [...] most had already been addressed. The biggest help was a link provided for "Diagnostics For Dummies", which was very helpful, in that it went step-by-ste...
2000 Cadillac DeVille 4.6L coolant VIN: 1G6KD54YXY
Sorry for the late closing customer decided not to fix this vehicle as many suggested I believe it is a head gasket issue. The cooling fans are working as they are supposed to. Water pump belt is good and self tensioner is good. Water pump is good we remove...
2000 Ford F-350 Super Duty XL 7.3L Poor power VIN: 1FDWW36F9Y
Unfortunately this is not an easy one. If it were really blatantly bad it might be easier. I suspect we are dealing with injectors so the customer has some at a diesel injection company being tested, I will put as many good ones as he comes back with on the ...
1999 Honda Civic EX 1.6L No Start VIN: 1HGEJ8148X
Group thanks for all the replies and tips. I finally fixed this car with 2 items. the first was the electrical portion of the ignition switch. I found that at times once it got to operating temperature that it would cause a voltage drop. The wire dropping was ...
2002 Jeep Grand Cherokee Laredo 4.0L gauges VIN: 1J4GW48S62
we went and doubled checked all our powers and grounds to the ecm,all checked well.we decided to install anew ecm and jeep fired right up.thanks to all replies.
2005 Mazda MPV ES 3.0L No Start VIN: JM3LW28J35
Thanks for taking the time to reply. Everyone pretty much went with the immobilizer theory. As I mentioned, there was no antenna at the ignition cylinder. Don't feel bad though. Even the dealer told me the vin # indicated there was one. When I pulled the ...
1994 Mercedes-Benz E320 3.2L Cam gear VIN: WDBEA32E5R
Another fantastic outcome with help from IATN members. This case has some of best responses from any of my cases. Don on Steve we extra helpful, even willing to take time out to call if needed. Once we had the correct info,. The car went together smooth. This ...
1996 Mercedes-Benz C280 2.8L Starting VIN: WDBHA28E4T
I found the problem. it was the ignition coils. They were firing but the spark was weak. Looked pale yellow at the plugs. Thank you to everyone for help.
2006 Nissan Frontier SE 4.0L 1-2 shift VIN: 1N6AD06WX6
sent truck to Nissan for adaptive resets. apparently good used valve body may have not been any good. not sure if that was the issue due to Nissan had extended the Canada warranty for radiator tranny coolers cracking. Nissan replaced the transmission again ...
2002 Porsche Boxster Roadster 2.7L MIL Lamp on
2004 Volkswagen Passat GLS 2.0L MIL Lamp on, Lack of power VIN: WVWVE63B24
Well, unfortunately it was back to basics on this one. The smoke test is not a good test for things that leak under pressure. There was a crack in an elbow in the turbo ducting that only leaked when sufficient pressure was applied. Attached to the turbo inle... Trouble codes: P0101 (p0299-), P0299.
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