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Prev Professional Automotive Repair Technical Discussions for January 14, 2014
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Help Request Answers
2002 Audi A4 1.8L stuck in 4th gear VIN: WAULC68E92
We have a A4 that appears to be in limp mode. Hard engagement into R and D. Scanner shows 4th gear selected in D. Tiptronic inop and prndl completely fully lit up. The p1815 code is pressure control valve 1 short to plus, or mechanical malfunction. First check...
2008 Audi A6 Quattro 3.2L engine VIN: WAUDH74F38
we received this car on Monday with a running rough /noise. found all bank 1 cylinders were misfiring,there is a terrible rattling type noise from the plastic intake plenum.the noise could not be heard anywhere else on the engine.the noise would demish when re...
2000 BMW 528i 2.8L No Start, Poor Idle Quality, Stall, Misfire VIN: WBADM634XY
BMW hard start...thanks in advance to all the IATN techs that take their time to help others.. I'm looking for a direction to start here on a 2000 bmw 528i. engine will crank over good with no start.. after a little fight it will start hitting on a couple cyli... Trouble codes: 238 (also 242 243 239 codes for misfire cyl1 5 6 2)
2003 BMW X5 3.0i 3.0L Door locks VIN: 5UXFA53583
this x5 was driven to work and at the end of the day her battery was dead and doors would not open. towed to shop and tried holding up on door handle while turning key - nothing. we managed to get the hood up to charge the battery. this is when we discovered t...
1989 Chevrolet R1500 Suburban Scottsdale 5.7L Cuts out, MIL Lamp on VIN: 1GNER16K0K
This Sub. belongs to my neighbor, I got him a new aftermarket dist. after his failed (no spark, pick-up was cracked). He brought to me, had no fault codes or symptoms before failure except slight surge @ idle. After dist. installed, MIL would come on at hwy./c... Trouble codes: 42 (Electronic spark control)
1994 Chevrolet Caprice Classic 4.3L No Start VIN: 1G1BL52W3R
Hi, every one: this car droved to shop a few month ago, we went to bring it in to bay , we couldn`t start it ! when we checked, engine was seized!! customer brought a used engine to put in the car. Before instalation we lubricated the engine with oiler. And tu...
2008 Chevrolet Equinox Sport 3.6L doors
I have looked in mitchell and can't find any help I have looked for history repairs in this data base Also haved looked in my modus ultra nothing in data pids of fuctunal tests I have not had this kind of a problem before they work but only if you are right n...
2010 Chevrolet Equinox LT 3.0L No Start VIN: 2CNFLPEY9A
Hello everyone, Vehicle was towed to the shop. After scanning for codes and a fuel pressure test (yielding 55 psi), and ignition coil test (all coils fired across the HEI tester), a compression test was carried out and we discovered that all cylinders were fl... Trouble codes: P0016 (Cam shaft phase solenoid fault), P0018 (Cam shaft phase solenoid fault), P0019 (Cam shaft phase solenoid fault), P228D, P228C
2001 Dodge Grand Caravan Sport 3.3L No Start VIN: 2B4GP44301
came in for a no start scanned had p0351 p0352 & p0353...has no fire...ran tests straight from mitchell and at coil connector disconnected with test light and voltmeter both connected to ground powered up asd relay and have bright test light and battery voltag... Trouble codes: P0351, P0352, P0353
2007 Dodge Grand Caravan SXT 3.8L starter VIN: 2D4GP44L67
Greetings fellow techs, Got an interesting one in this morning that I could use some help on. 2007 Dodge Grand Caravan 3.8. Customer called and said van just quit a short distance from their home. She called her husband to come pick her up and by the time he g...
1994 Ford Ranger STX 2.3L No Start VIN: 1FTCR10A6R
Hello guys, this car will not start when very cold but once you drove the car in the garage for couple of minutes, it will fire right away. Tried to find out when very cold out say -17 celcius, has fire, gas and injector signal. One thing I noticed the CTSand ...
1999 Ford F-250 Super Duty Lariat 6.8L No Start VIN: 1FTNW20S4X
Truck came in no start, service engine soon light 'vibrating", NO POWER TO FUEL PUMP, power-up pump no pressure. Replace pump, power -up pump, we have pressure, no power to pump while cranking, fuel pump relay "clicking" inside the cab. We supply ground to f/p...
2003 Ford Expedition Eddie Bauer 5.4L starter VIN: 1FMFU18L63
Vehicle towed in with no crank, customer replaced battery still no crank. Have good battery voltage to starter with no signal from ignition, have signal from ignition to start relay. Other things going on are no communication with scanner, relays clicking and ...
2005 Ford E-250 5.4L Hesitation, Cuts out, Stall VIN: 1FTNE24L25
Test drive van, feels like no throttle or maf problem when you get on it. No vac. leaks found sft and lft ok, did pinpoint tests for maf,tested wiring, clean grounds and voltage drop tests. It was very intermitant before now it does it all the time..when it do... Trouble codes: P061B, P0068 (tp inconsistent with maf sensor), P1101 (maf out of self test range), P0121 (tp sensor A circuit range/performance)
2007 Ford F-250 Super Duty XLT 5.4L Poor Idle Quality, Stall, MIL Lamp on VIN: 1FTSX20537
Need some help gentlemen, we are working on this f250 and it is giving us a lot of grief. Truck originally came in running rough, misfiring, and would ocasionally stall, there was also an obvious rattling noise from the front of the motor inside the timing cov... Trouble codes: P0020, P0300 (Random misfire detected), P0301 (Cylinder 1 misfire detected), P0303 (Cylinder 3 misfire detected), P0305 (Cylinder 5 misfire detected), P0307 (Cylinder 7 misfire detected)
2008 Ford Explorer XLT 4.0L Ambient temp VIN: 1FMEU73E98
Hey guys, this Explorer is showing -7 deg. Even in the shop. I tried a new sensor... still the same. My scan tool is on the fritz, can't get any codes or data. Would appreciate any help.
2006 GMC Sierra 2500 HD SLT 6.0L dash unit VIN: 1GTHK29U36
Thanks in advance for any help on this truck. Truck came in with speedo & gauges working sometimes. When here did not work at all. Tested and replaced dash unit with GM replacement. Worked fine for 2 days and then same thing. The only thing working is dash lig...
2008 GMC Canyon WT 2.9L Cuts out, Stall, MIL Lamp on VIN: 1GTCS19908
Started with just MIL on, Lean code, rapidly progressed to almost undriveable. What happens is on accel or brake torque in bay, at a certain point, engine will start running really bad, loose power, hesitate and buck. Oxy readings go full lean, like 15 MV. Rel... Trouble codes: P0171 (Bank 1 lean)
2001 Honda Civic EX 1.7L Mechanical VIN: 1HGEM21971
we are changing valve seals on this civic. what tool is out there to take off the valve springs. the valves are too close to the spark plug tubes. thanks
2006 Honda Civic EX 1.8L ac compressor always on VIN: 1HGFA16886
2006 Honda civic ac is always on have replaced compressor last summer due to clutch came apart, then customer brought back with cooling issue. replace expansion block cause low side pressure seemed to be restricted. now ac will not turn off with command from c...
1999 Jaguar XJR 4.0L seat memory VIN: SAJPN1846X
hello IATN family, we have a 1999 jaguar XJR s/c and we are performing repairs to the body and mechanical. does anyone have any great sources for parts (worldpac has some) also looking for any input or assistance in the electrical , mainly the seat memory d...
2001 Jeep Cherokee Classic 4.0L Poor Idle Quality, Misfire VIN: 1J4FF58S71
Hello to all and Thanks for your help.This Jeep came in with a over heating prob.Ran test and found cracked cylinder head customer would not buy a long block at the time so sold a reman ATK cylinder head. After cylinder head replacment # 2 cylinder was down 30... Trouble codes: P0306, P0301, P0300
2001 Lexus ES300 3.0L cyl head
My question is not how to fix it. Cause I already know that I have to pull the rear head and check the valves. I was unable to get any fuel trims that are acurate since the a/f sensors are completely covered in carbon. Not to mention it would not run with eith...
2002 Lincoln Navigator 5.4L Power Window VIN: 5LMFU28R82
I have a 2002 Lincoln Navigator that is giving me fits. We replaced a drivers window regulator. After the regulator was replaced the One Touch Down feature doesn't work correctly. It goes up and down great as long as you don't go down using the one touch. If t...
2001 Mazda 626 ES 2.0L battery VIN: 1YVGF22C61
Need help on this one guys. About between 2-6 days battery is going dead. Sometimes it will sit for 2 days and than not crank over and sometimes it will be 6 days. Cannot catch the draw in the act however. Can let it sit all day with amp clamp recording on lab...
1999 Mercury Cougar 2.5L Poor Idle Quality, Stall VIN: 1ZWFT61L5X
car has a howling noise out of air intake,can feel the lid on the air cleaner resonating while it is howling,also holding hand over opening into air cleaner box will change the sound,i know years ago there was a bulletin on this.maybe a faulty iac motor? only ...
2006 Nissan Sentra S 1.8L MIL Lamp on VIN: 3N1CB51D36
Car came in with code, runs fine, back probed connector to watch wave form looks ok but not really sharp on upward slope, removed sensor, reluctor on cam is not damaged and looks clean/normal, checked resistance to ground for sensor, 1.6 ohms, checked resistan... Trouble codes: P0340 (Cam Position Sensor Problem B1)
2006 Pontiac G6 3.5L Sir VIN: 1G2ZG55846
The car came in for a loss of electrical power steering assist. The customer already replaced the motor and module. They have also taken this car to a stereo shop where they have been putting in speakers or something, the car came back to us with panels taken ...
2012 Porsche Panamera 4 3.6L left low beam VIN: WP0AA2A76C
I have a durametric scanner, and before flooding my inbox with 'durametric is a piece of junk',please do not waste your time and mine if this is the only response you have. The headlight module(970 918 143 02)has been replaced. When I check module info with my...
2008 Saab 9-3 2.0T 2.0L Misfire VIN: YS3FB46Y28
Car came into shop with misfire when cold. AS soon as it would warm up it would run fine. Removed head and sent to machine shop for repair. Found valve guides bad and had complete rebuild performed. Installed head. Now car starts fine, idles fine cold and runs... Trouble codes: P0300 (Random Misfire)
2002 Saturn L300 3.0L No Start, Hesitation VIN: 1G8JW54R32
Checked vehicles fuel pressure, when running 45-49 lbs. But when vehicle is turned on there's no priming on the pump. So I went ahead and replaced fuel pump with OEM pump, and replaced the fuel filter. Still same issue, Replaced crank sensor, still same issue,...
2005 Saturn Ion-2 2.2L Mechanical VIN: 1G8AZ52F95
Customer Wants me to swap a motor from a 04 to this car. I called a salvage yard and they tell me this will work other then the intake. Can any one tell me if this is true. the 05 has no visible sign of a egr valve but the 04 has what appears to be a caped off...
1994 Toyota Pickup DLX 2.4L Start stall start stall VIN: JT4RN93P9R
Vehicle towed in for stalled on road.Engine will start and stall everytime,Almost like theft system on GM vehicle have tested spark,fuel pressures,compression,timing and injector pulse.All are good.Have no codes not sure what issue is any help greatly apprecia...
2001 Toyota Sequoia SR5 4.7L Water Pump VIN: 5TDZT34A61
Vehicle overheating, upper hose and upper part of radiator hot, along with engine temp , lower hose after t/stat cool along with lower part of radiator.
2007 Toyota Camry XLE 2.4L Poor Idle Quality VIN: 4T1BE46K17
The complaint is vibration at idle. Confirmed vibration at idle in drive with A/C compressor engaged. This is not a hybrid. Initial inspection was brake torque engine seemed to move excessively in drive. In reverse not so much movement. Engine shakes in revers...
1997 Volkswagen Jetta GL 2.0L Stall VIN: 3VWWB81HXV
hello everyone this vehicle has a very intermitten stall from a stop like a traffic light then when taking off it will stall, then may be an extended or labored restart. i have driven this vehicle for a week to and from work without any problems. cust has driv... Trouble codes: P0300, P0304, P0303
2001 Volkswagen Jetta GLS 1.8L Excessive Emissions VIN: 3VWSD69M11
Hello Fellow Techs. We have a VW Jetta in our shop that's giving us a bit of trouble. Car failed CA emission test and MIL on. Vehicle is very rich. Fuel trim is -25 at idle however long trim seems to stay near 0. Ive checked the intake system for leaks with a ... Trouble codes: P0170 (Fuel Trim bank 1)
2003 Volkswagen Jetta GL 2.0L oil pressure VIN: 3VWRK69M23
Customer states: RED oil light came on and immediately pulled over and shut down vehicle. Added 3 quarts oil and started vehicle. Drove about 5-7 miles and again Red Oil light comes on. Customer opened hood and found copious amount of oil all over right side e...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2000 Audi S4 2.7L No Start VIN: WAUDD68D9Y
Alright I need to close this post due to running out of time. We still have the vehicle here, and I still believe the problem to be the computer. Why? Because one day for unexplained reasons it started and worked, with perfect communication. While it was funct...
2003 Audi A4 Quattro Avant 3.0L Windshield washer pump VIN: WAUVT68EX3
Thanks for all the input. This job served as a good lesson for me. It was fuse # 37. I did check fuses initially with a volt meter by touching outside of fuse blades on both sides and having voltage present. Not until I removed the fuse did I find that it was ...
2008 BMW X5 4.8i 4.8L Hard Start VIN: 5UXFE83578
We finally got this vehicle back. The fuel pressure was still dropping off so we disassembled the left side of the tank. Inside we found a fuel pressure regulator and lines that returned fuel to the other side of the tank as well as the line forward to the e...
2003 Cadillac CTS 3.2L Gas Tank VIN: 1G6DM57N83
As suggested by a couple of you gas tank fixed problem. baffle had broken loose inside. Thanks to all who replied.
1951 Chevrolet Truck 3100 3.5L Mechanical VIN: 14JPG16820
Lot More Replies Than I Expected. Thanks To Everyone. I Did Make A Piece To Connect The Tubing In The Pan With THe Oil Port In The Block. Even Added A Couple O-Rings To Seal It Better. I Did Have It Running For A Moment And Had Decent Oil Pressure With A Guage...
2008 Chevrolet Tahoe LS 4.8L Poor Idle Quality, MIL Lamp on VIN: 1GNFC13C78
2001 Chrysler Sebring LX 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 4C3AG42H11
Finally got this one. Customer stated it wasnt a prexisting problem but it had to be. The timing belt had been done before the car sat. I rescoped both cam and crank sensor with 2 channel and overlayed the signals and they were off just a hair. Rechecked t... Trouble codes: P0355, P0340, P0300.
2006 Ford E-350 Super Duty 6.0L Surge, Delayed upshift VIN: 1FTSS34P36
Actual vs desired pressure comparisons were all right on for every measurable parameter. To summarize, I got a lot of suggestions about fuel aeration and injector O-rings. This particular instance was not caused by that - typically when I have seen aerat...
2007 Ford F-350 Super Duty XLT 6.0L Lt Trailer Circuit VIN: 1FTWW31P27
Well I went digging for the harness. The easiest way was to remove fender liner and remove the pdc box mount. I found the signal wire from the switch buried inside the loom. Did some wiggling and the connection was intermittent, so I cut off the factory wrap, ...
2011 Ford E-350 Super Duty XL 5.4L Engine VIN: 1FBNE3BL1B
This one is getting an engine. Bearing caps damaged. Oil pressure was good cold and off idle so that is why we were not getting vvt codes. Engine was covered under powertrain warranty. Customer was very good with maintenance so the cause of this is a bit of a ...
1999 GMC Jimmy SL 4.3L brake pedal VIN: 1GKDT13W3X
This sucker is fixed! Thanks for all the ideas and insights. First off, we felt we had eliminated the ABS system by disconnecting the wheel speed sensors, disconnecting the ABS pump harness connector and replacing the ABS unit (hydraulic and electric unit), ...
2004 Honda Civic Hybrid 1.3L hybrid batt VIN: JHMES95644
Ok so I found a RC battery charger and charged individual cell packs 3 or 4 times at first it took 30 to 40 minutes per pack to charge complete then it only took about 10 minutes each, all charged uniformly. I then moved cell packs around in order to change ce...
2000 Hyundai Elantra GLS 2.0L Misfire
The vehicle returned and we re-tested and found that there was a leak in the intake gasket at cylinder 3 that only showed up on cold start when the car sat all night in cold temperatures. As soon as the car (engine) warmed up, the metal and gasket would expand... Trouble codes: P0303 (Cylinder misfire cylinder number 3).
2008 Hyundai Santa Fe GLS 2.7L MIL Lamp on VIN: 5NMSG73D78
I looked at PCM data and found 30 degrees actual cam position and 0 degrees desired cam position on both banks at idle.The codes would reset immediately.The front upper timing cover is easy to take off on this vehicle so I got #1 on TDC,removed cover and foun... Trouble codes: P0016 (CKP-CAM [...] A), P0018 (CKP-CAM [...] sensor A).
1996 Jeep Grand Cherokee Laredo 4.0L abs VIN: 1J4FX58S9T
Well I got a junkyard Valve body and that fixed it. Too bad we can't buy parts for these units but I guess the liability would be prohibitive.
2006 Mercedes-Benz E350 3.5L Suspension VIN: WDBUF56J56
Thank you all for the info. I raised the car up on the lift and used a rubber mallet hammer to tap on the lower control strut that runs toward the front of the subframe. I could tap on the passenger side control arm strut and the sound was very solid like a ...
2005 Saab 9-2X Linear 2.5L camshaft seal VIN: JF4GG61625
I very much appreciate the input I received from all replies. As per my update, removing the front cam gears and seals and cleaning out the oil return holes in the cams fixed this problem. I cleaned out rear cam holes also, then installed rear cam plugs with n...
2008 Saturn Astra XR 1.8L Hesitation, MIL Lamp on VIN: W08AT67168
Technically speaking this vehicle is not fixed, but I am 100% certain of the solution. Upon tear down of the cam caps and oil solenoids, I found severe gouging of the passages on the intake cam & cam journal for the VVT oil flow. This was allowing bleed-dow... Trouble codes: P0016 (CKP/CMP correlation fault / signal invalid intake camshaft).
2005 Toyota Tacoma 4.0L selecter shaft VIN: 5TEMU52NX5
well this truck is going to the dealer for repaires I thought it was a shift cable but it is internal thanks Jim for your input
2006 Toyota Prius 1.5L No Start, Stall, MIL Lamp on VIN: JTDKB20UX6
Thanks for all the replies but Carolyn and Gary you are my tech of the week, I would like to thank John, Michael, and Ralph you all had good input. This one turn out to be a defective fuel sending unit and out of gas Check the fuel pressure had no pressure, bu... Trouble codes: P0A0F, P0571 (Brake switch circuit A), P0607 (Control Module Performance), P3110, P3193 (Fuel Run Out).
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