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Prev Professional Automotive Repair Technical Discussions for April 13, 2012
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Open Help Requests for All Makes and Models
Help Request Answers
2006 Acura MDX Touring 3.5L Horn, Cruise, radio buttons on steering wheel VIN: 2HNYD18806
Customer brought in for no horn operation,cruise control and radio buttons not operating. R&R steering wheel and check power and grounds - okay. Tested continuity in clock spring for air bag - out of specs. Replaced clock spring and everything operated normall...
2000 Audi A6 Quattro 2.8L timing belt tension VIN: WAUEH54B0Y
Howdy all. I have a timing belt tensioner thats is losing tension after driving a short, 20 miles, distance. I replaced the tensioner again however it has bled down again. It was adjusted as per all data to 15Nm. What am i doing wrong? Thanks in advance for an...
2004 Audi S4 Avant 4.2L Poor Idle Quality, Misfire VIN: WAUPL68E04
Customer complains the vehicle goes into limp mode. Vehicle presented with multiple codes including those listed as well as multiple misfire codes and fuel trim codes. Cleared and test drove, throttle body codes returned. Replaced throttle body, adapted and te... Trouble codes: P1543 (Throttle valve sensor signal too low sporadic), P1172 (Throttle valve position sensor signal too low), P1630 (Accelerator pedal position sensor signal too low), P0507 (Idle control system rpm higher than expected)
2001 Chrysler Sebring LXi 2.7L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy VIN: 1C3EL55U71
Hi guys, im looking at this vehicle for another shop. This vehicle came in with a code P0320 stored for faulty crank position sensor.Vehicle starts and runs normal (with some timing chain noise) until it reaches around 190 degrees and then it goes nuts. I chec... Trouble codes: P0320 (Crank position sensor failure.)
1999 Dodge Neon High Line 2.0L MIL Lamp on VIN: 1B3ES42C6X
Need some help from you crysler techs. This neon sets the code p0401 for inssufient flow. we have relaced the egr valve. The egr valve is working properly i can apply vacume and kill the engine. The solinoid has vacume and the transducer is getting pulsing pre... Trouble codes: P0401
1999 Dodge Ram 3500 Van 5.9L No Start VIN: 2B5WB35Z7X
Hi I have this van towed into my shop as a no start.The motor was hydolocked with fuel.I pulled the plugs and drained the fuel out and when I turned the key on the fuel pump relay and auto shutdown relay pulse on and off as long as the key is on and cylinder #...
2000 Dodge Ram 1500 Laramie 5.2L Starting VIN: 1B7HC16YXY
I have a 00 Ram with the 5.2l that will stall out intermittently with no MIL and then display "No bus" in the odometer display. As soon as it says "No bus" the MIL will turn on. You can turn off the key and turn it back on and the MIL doesnt illuminate. If you...
2001 Dodge Intrepid SE 3.2L blower motor VIN: 2B3HD56JX1
the blower motor does not operate, no codes at auto climate controler or bcm. after so much testing we replced control head, and body control moduel twice with used to no avail. blower motor would operate when command sent to bcm. knoledge base, identifix, mit...
2002 Dodge Grand Caravan Sport 3.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2B4GP44392
Engine starts and runs with obvious cylinder misfire. P0204, & P0304 stored.check harness with node light and didn't get anything. Node light worked on other 2 cylinders on that bank. Run tests on wires and injectors as stated in testing section. my scanner is... Trouble codes: P0204 (open circuit 4 cyl.)
2004 Dodge Ram 1500 ST 4.7L rocker arm VIN: 1D7HA18N14
well first off the the truck set a p0300,p0306 and p0308. the exhaust rockers fell of number 6 and 8. so my questiopn is , does anybody have the tsb for this specific concern where the rockers fall of the 3.7 and 4.7 engines, because mitchell nor identifix lis...
1997 Ford F800 7.0L 2-3 shift VIN: 3FCMF53G3V
The vehicle has 1-2 shift only and no shift after that. Cannot find DLC connecter. any help would be definitely appreciated
2001 Ford Expedition XLT 4.6L Poor Idle Quality, Cuts out VIN: 1FMRU15W01
ok ford guys need help on this 1 this expo is killing me truck came to me with a mirfire and lack of power pulled codes found p0354 coil circuit on #4 that problem is fixed and now runs smooth but at about [...] the truck will fall flat on its face the fuel...
2005 Ford F-350 Super Duty XL 6.0L Delayed Forward VIN: 1FTWF31P25
Truck came in about 5 months ago with a failed torque converter. We rebuilt it with all clutches, billet torque converter and a Transgo shift kit and all was good. Customer just brought it back because it was shifting "funny". The first thing that I noticed wa...
2006 Ford Five Hundred SEL 3.0L whinning noise VIN: 6G104314H7
customer complaint is makes noise turning added fluid and flushed several times (ford noise?) she wants it fixed i suggested new rack and pump but dont want to waste customers $ has anyone else had this problem? Thanks Scott Seems to act up on SLOW cornering w...
2007 Ford Explorer Sport Trac Limited 4.6L Surge VIN: 1FMEU53827
Good morning, this sport trac is really giving me fits! at a steady cruise of 35-40 mph the tach will jump 100-150 rpm. Some times its not noticable except for the tach needle jumping but depending on load (like a small incline)you can also feel and hear the r...
2005 Jeep Liberty Sport 2.8L MIL Lamp on, low power VIN: 1J4GL48585
Check engine light comes on after 9-15 miles of driving. It starts by losing power followed immediately by check engine light. Mass air flow sensor readings are seemingly okay at idle (14-17 gps) and also at higher rpms. I know there is a factory bulletin abou... Trouble codes: P0101
2005 Land Rover LR3 SE 4.4L MIL Lamp on VIN: SALAD25485
thanks in advance. this vehical came in for oil change, performed oil service and noticed check engine light on and air ride light on system set to normal highth only!!! found code 2610 in ecm and c1a13/c1a20/ in suspension system for presure increase and decr... Trouble codes: P2610, C1A13, C1A20
2008 Lexus LS600h L 5.0L radio VIN: JTHDU46FX8
I'm hoping someone has seen this before. I've got this Lexus LS600hL that the radio has no sound. The only thing is has is a very high pitched beep from the speakers. All of the functions of the touch display/radio work. I can change stations, play a cd, contr...
2009 Lexus RX350 3.5L Engine VIN: 2T2GK31UX9
Car came in for engine noise. Customer states noise has been evident for about a month and is now getting worse. Claims to maintain car regularly. The engine sounds like a diesel engine. Noise is always evident, does not lessen with rpm increase. I have remove...
2005 Mazda 6 S 3.0L Excessive Emissions, Surge, Cuts out VIN: 1YVHP80D85
This car had a host of problems when it came to me. Bad coils, bad cats, bad purge valve, and a bad throttle body. All of those have been fixed but I still have a problem. At idle the car runs perfect. Fuel trims are normal, o2's switching properly. Problem is...
2008 Mazda CX-7 Grand Touring 2.3L unknown VIN: JM3ER29LX8
This vehicle has a vibration between 55 and 70mph, only when accelerating, when you let off the gas the vibration stops. The tires are balanced and not out of round,a previous shop had the vehicle aligned. The front end is completely tight. I did notice a smal...
1996 Mercury Villager GS 3.0L harsh shift VIN: 4M2DV11W9T
Vehicle came in with harsh shifts and a PO745 code. I checked the EPC and internal harness and they check fine with about 3 ohms resistance. I have no voltage at the connector. I suspect the dropping resistor. My first problem is that I can't find it. All of m...
2005 Mercury Mariner Premier 3.0L shift interlock VIN: 4M2YU56135
the shifter is clicking only when the engine is running and the car in in park with out your foot on the brake pedel. When i appply the brakes its stops and lets the shifter out of park like it should , once in drve it makes no noise. When the switch is on but...
1995 Nissan 240SX 2.4L No Start, Poor Idle Quality, Cuts out VIN: JN1AS44D2S
Greetings and thank you for your time. Looking for a starting point for this unusual issue with our Nissan 240. Car came into shop with stalling issue when cold and rough idle. Replaced Mass Air flow sensor and car left with idle issue resolved. Stalling issu...
2002 Nissan Altima S 2.5L Compressor controls VIN: 1N4AL11E82
Hi, This system will cycle on and off but be off more than on. As a result the vent temp is not cold enough. The charge is correct & the air has been vacuumed out of the system. The controls visually appear to work properly. The wiring diagram indicated the co...
1998 Oldsmobile 88 Royale 3.8L starting VIN: 1G3HN52K4W
this car will not crank. It has anti theft on it and when scaned shows that the the fuel has been disabled. If we bypass the starter relay under the dash it will crank and start for a second and then die. we have replaced the anti theft module and reflashed it...
1995 Porsche 968 3.0L sunroof VIN: WP0AA2962S
Car came in with the sunroof not working correctly. Repaired stripped gears and replaced switch for sunroof in center console. I got everything back together and the problem that im having is that the the unlock feature to remove the roof is not working. With ...
1994 Toyota 4Runner SR5 3.0L No Start, Stall VIN: JT3VN39W0R
customer brought in thinking needs fuel pump but it's flooding,checked fuel pressure ,checked fuel return,change fuel pressure regulator , checked ect Thanks in advance
1999 Toyota Camry LE 3.0L Fuel VIN: JT2BF28K2X
Vehicle was towed in. Found timing belt was melted. Water pump has locked up causing belt to melt and timing slipped. Replaced timing belt, water pump, pulleys and hydrolic tensioner. When finished vehicle would not start. Checked and found plugs badly fouled ...
2006 Toyota Tacoma 2.7L Computer VIN: 5TETX22N26
Hello all, This one has me stumped. Truck came in for exhaust leak and code for catalyst efficiency below threshold. Cat was cracked and B1S2 (post cat) showed 0 Volts. Replaced cat and OHM checked O2 sensor. Checked ok. Checked all four wires up to the comput...
2002 Volkswagen Passat GLX 2.8L Starting VIN: WVWWH63B72
Hello, We got this Passat in with a no crank situation, pursued the source of power to the starter solenoid and found that the comfort control module is where it starts out at. Our assumption was that we would find the typical water in the box problem since t...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2001 BMW 740i 4.4L Poor Idle Quality
ref voltage to bi cam 12 volt to 17 volts ran new wire and was able to do the key cycle to relearn idle thanks for all replies my question is why the voltage spike on teh 12 volt ref after i ran my own 12 volts car ran great Trouble codes: 134.
2003 BMW 745Li 4.4L brake Lights VIN: WBAGN63453
ABS/DSC control unit was the problem. Coolant leaking from reservoir corner leaked onto control unit . Used control unit and programming have fixed brake light problem. Thks to all for help
1951 Cadillac Series 62 DeVille 5.4L Wiring VIN: 000FW46458
Some of you suggested Hemmings and Mitchell for resources. Thanks.. I have all the stuff in my old service manuals , just not specifics and thanks kindly to John for emailing me the specifics for the old girl The old girl went to Disney land and M...
1977 Chevrolet P30 Step-Van 4.8L Mechanical
I really appreciate all the replies, thank you! I'm closing this as not fixed with a summary because I don't know when or if the customer will want to do any more to it. There are so many replies (64!) I won't be able to give credit to everyone. I'll...
1994 Chevrolet K3500 Cheyenne 6.5L Fuel System VIN: 1GCHK33F1R
Thank You all for all the information and tips you gave. We just realeased the vehicle today to the customer after a week of test driving. I ended up replacing the injection pump with a new PMD module (which I moved to the customer heat sink fins which he alre...
1994 Chevrolet Camaro Z28 5.7L Excessive Emissions VIN: 2G1FP22P7R
First I want to thank all of you that respond to my post & aplagize for my lack of info in the post. I should of done a few thing before posting. This car has all kinds of MODS on it(High flow exh. header to exh.tips, K&N cold air intake, The ECU had been fla...
2005 Chevrolet Malibu Maxx LT 3.5L starter VIN: 1G1ZU54865
Most replys were that I needed a tech 2 to diagnose this concern. I still have to get the vehicle back in to test the tap up/down switch located on the shifter as per p0826 code stored. I will update this post when resolved. Thanks again for all the great repl...
1998 Chrysler Sebring JXi 2.5L Stall, Security light on VIN: 3C3EL55H6W
Thanks to those who replied. The problem ended up being a security problem that the customer decided not to fix. PCM and security were not communicating for what ever reason and he did not want to spend any more money to fix it.
1999 Chrysler Town & Country LX 3.8L Power to controller VIN: 1C4GP54L0X
Thanks for all who gave advice and ideas. The ciruit for the O/D solenoid ended up being shorted to another solenoid wire intermittantly within the harness. Under the battery there was a prior repair (not a good one) and that is where I found my problem. Thank...
2006 Chrysler Town & Country 3.3L ABS & Power Door Locks VIN: 1A4GP45R66
First, I want to thank the two listers who replied. I finally got the van back from the customer this morning. She needed it last week, so I had to cut my diagnostics short. She commented this morning that although the blower fan functioned, the A/C compressor...
2007 Chrysler Pacifica Touring 4.0L master cylinder VIN: 2A8GM68X57
Funny the things we forget over the years. Customer installed calipers on wrong sides. Bleeders were down trapping air. Reversed calipers, bled system, brakes work great. Thanks for the help.
2000 Dodge Dakota SLT 3.9L No Start, Poor Idle Quality, Misfire VIN: 1B7GL2AX0Y
This truck is fixed, well for now. After spending hours upon hours pouring over test data that read exactly as it should. Replacing good parts with new parts, some more than once. And causing everyone here to doubt their carreer choices. The long crank was alw...
2001 Dodge Ram 1500 Laramie 3.9L oil pressure VIN: 1B7HC16X41
I checked the oil perssure with a manual gauge and and it held 10psi hot idle 764rpms alldata says 7psi is good. sent the tuck out and no complaints from customer. all is good thanks for all the help.
2004 Dodge Durango SLT 4.7L Starter VIN: 1D4HB48N94
Thanks go out to all who helped. The solution to this repair is multifaceted. First I did replace the ignition switch as many suggested and I determined was not working as I expected with the prnd21 switch problems and the no crank. Sadly this made no diffe...
2003 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53203
Hi all, well I finally got to check this thing out again...While checking again,found that the scan data was indicating,5 volts,on the fuel level sensor.Seeing this before I went right for the pcm connector,and while wiggling the y/w wire it would toggle,from ... Trouble codes: P0460.
1998 Honda CR-V EX 2.0L dash clock VIN: JHLRD1861W
Thanks to all the technicians who provided advice. I found a company on line that repairs these clocks for only $15. The most frequent problem is a cracked solder joint on the circuit board but repairing it requires both skill and the appropriate mini solderin...
1996 Jaguar XJ6 4.0L No Start VIN: SAJHX1747T
ONCE AGAIN, Thank-you to all that replied.. seems that using a tester designed for an ABS wont identify a STRONG ENOUGH signal. the display showed an even signal, but was not enough to fire, replaced and fired right up. Trouble codes: N0NE.
1998 Jaguar XJ8 4.0L No Start VIN: SAJHX1244W
This car is fixed!!! Most everyone thought this motor was going need a rebuild, however it is ok. Thanks to Wayne from Virginia, who suggested running trans fluid for 30 Min then adding regular conventional oil. After I did this it still didn't want to star...
2002 Jaguar X-Type 2.5L MIL Lamp on VIN: SAJEA51D52
Well this jag is being just that! No matter what i do the lean condition is always on bank 2. If i reset ft and let idle it will be ok until drivin. ST FT pegs at +25%bank 2 and approx +5-10% bank 1 at cruise(between 30-50mph). I have swapped injectors and low... Trouble codes: P0174.
2006 Mercedes-Benz ML500 5.0L right rear window VIN: 4JGBB75E16
Thanks to all who replied. This had a bad SAM module, intrenal relay short calling for window to go down all the time. No signs of any type of liquid spilled on unit, great point though. Replaced SAM and reprogramed. system working fine.
2003 Mercury Grand Marquis LS 4.6L Headlights VIN: 2MEFM75WX3
Thanks to all who helped with this. I replaced the lighting module and so far the problem is fixed. Thanks, Randy.
2005 Mini Cooper S 1.6L Removal VIN: WMWRH33435
Well i finally finished the clutch. It said it pays 11.2 hours, it probably only took me 10. I decided to not remove the engine like some suggested. But i did take the radiator and condensor out and that seemed to help alot, it gave me tons of room.. After...
2007 Mini Cooper S 1.6L MIL Lamp on VIN: WMWMF73577
Well I got a couple of replys, for which I'll say thanks to those that did. I had already checked those things. I smoke tested the vehicle and didn't find any leaks. I verified all of my connections were clean and tight and had good continuity from the PCM to ... Trouble codes: P2402 (Evap System Leak Detection Pump Control Ckt High).
1998 Mitsubishi Galant ES 2.4L Clutch (FWD) not (AWD) VIN: 4A3AJ56G7W
Sorry I'm Late, Everyone gets a Gold Star for all the replies, I talked to the Machinist who told me he took a bunch off the flywheel to flatten it out. So my theory of needing shimed seems to be the one. Thanks for all the replies.
1997 Nissan Altima XE 2.4L Odometer
I checked voltage at odometer and ATCU today. No voltage present at ATCU. Replaced the instrument cluster with a used unit from a 98 (newer body style) and no more limp mode, Self-Diagnostics comes back with no codes. Thanks for the replies!
2000 Toyota Avalon XL 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4T1BF28B3Y
Thanks to everyone for the advice. We tested the oil pressure solenoid, cleaned the screen/filter and determined the VVT-i was faulty. Once I received the new parts we heated the end nut a little, held it with a wrench on the camshaft (nice square 24mm secti... Trouble codes: P1351 (p0302-), P0302 (p0304-), P0304 (p0306-), P0306.
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