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Prev Professional Automotive Repair Technical Discussions for October 11, 2012
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Help Request Answers
1989 Bentley Turbo R 6.7L Unknown VIN: SCBZR03B2K
Car came in with hard to start after warm up , No info from either Alldata Or Mitchell, When the car is cold starts fine & no misfire , let the car warms up, let say running for 10 minutes shut the engine off & let it sit for 5 to 10 minutes try to start it it...
1997 BMW 328i 2.8L hvac tcs srs chime abs VIN: WBACD4321V
Car towed in, no crank. AAA put a battery in it. Found fuse 31 blown, and immobilizer would not allow signal voltage to reach starter. replaced fuse, blew immediately. Found short to ground on red/yellow wire coming off of fuse 31. Ran a new wire from fuse 3...
1998 BMW 740i 4.4L pass seat sensor VIN: WBAGF8321W
Air bag light comes on! Clear codes stays of for a day or two. Good scanner ,but no diagnosis. If I hook a DMM to the mat nothing changes wether I sit in the seat or not. Is there a way for me to test this system? Thanks for your knowing folks
2007 BMW X3 3.0si 3.0L Light Bulb warning light VIN: WBXPC93467
Car came in with light out warning lamp on.Pulled codes and retrieved Code 34 - Left rear brake light out and code 3E - Rear fog light ( US: Adaptive brakelight , left faulty). We installed new left rear brake light bulb and cleared fault memory. Warning lamp ...
2001 Cadillac DeVille DHS 4.6L air bag VIN: 1G6KE57Y91
I have this caddilac with an air bag light on codes boo29 passenger side right front loop open and code b0087 right rear loop open, have checked connectors to the sdm and seat connectors no corrosion or problems found, modis shows very little data to go on, tr...
2004 Cadillac CTS 3.6L No Start VIN: 1G6DM57734
vehicle towed in for no start condition. ran normal diagnostics and came up with a bad PCM. Replaced pcm and did a reflash, vehicle started and ran normal, problem solved. went to do the VTD relearn through the pass thru pro, seemed to run through fine, and no...
2000 Chevrolet Blazer LS 4.3L no 4wd low range VIN: 1GNDT13W7Y
Hi There i have a fault with the Autotrac system in that it does not engage 4wd low or Transfer case neutral. also the dash display does not show all of the gear lever positions ie PRND2L only shows R D L we have a donor vehicle which is the same and have sub...
2003 Chevrolet Express 2500 6.0L Cuts out, Stall VIN: 1GCGG25U63
The customer has complained that the engine cuts out at idle upon stopping in traffic. It restarts immediately and can cut out before the traffic light turns green but not always. It can cut out this way several times in a trip. I finally got it to act up on m... Trouble codes: P0171 (System too lean bank 1), P0174 (System too lean bank 2)
2003 Chevrolet Silverado 1500 5.3L Cuts out VIN: 2GCEK19T43
Installed new pedal position assy due to past experience with them going bad. No joy. vehicle came back with same problem. Alldata does not give the desired % that the items need to match so i don't know where to look next. Trouble codes: P1516 (TPS/APP Difference)
2004 Chevrolet Suburban 1500 LS 5.3L tire light VIN: 3GNFK16Z94
Have this suburban that has a tire light on and a check tire message in the instrument cluster display. First attempted relearn of all sensors. Vehicle went through relearn procedure and all sensors came on line and read correct tire pressure.Took for test dri...
2001 Chrysler PT Cruiser 2.4L Power Door Lock VIN: 3C8FY4BB51
We checked the fuses, according to wiring diagram there are 3 fuses for this system, 1,3 and 10. On this vehicle there is no fuse in the #1 slot, not even a socket for a fuse, the other two are good. According to direct hit the next thing for me to do is gai...
1998 Dodge Ram 3500 Truck 5.9L no right front brake and now rear brakes. VIN: 3B6MC3664W
vehicle come in with abs and brake lites on. done a vehicle inspection and did not recieve any codes from abs module. can communicate with abs module but we have no vehicle speed sensor reading from any of the three sensors(l/f, r/f, and rear sensors) in the a...
2009 Dodge Ram 3500 Truck SLT 5.7L No Start VIN: 3D6WH48T69
Good morning Iatn. I have one I need help with. I have done little on these new Chrysler SKREEM systems. A little history: truck had a salvage engine installed before we got it by an unknown location. We got this truck and the battery was stone cold dead. Char...
1987 Ford Thunderbird LX 3.8L ext. lights (except brakes),int lights,pwr seats,
Sorry to ask for a magic bullet, but this car is a "gem", and I am on flat rate and don't want to get ate up by this blue oval. FYI wiring is my weak skill set. I know I read and/or have heard about a pattern failure matching these symptoms almost exactly seve...
1996 Ford Ranger Splash 2.3L Cuts out VIN: 1FTCR10A0T
Thanks in advance for your help. This Ford ranger will cut out in stall about 3,800 rpm and when driving, Its like you shut the key off, The tach will drop and check engine light will come on real quick like a koeo condition engine will cut out then it comes r...
1997 Ford Expedition Eddie Bauer 5.4L ecu VIN: 1FMEU17L9V
Hey all need help bad. Truck came in with no start theft light blinking. Cust thought it was the key. had a locksmith make key and program. Battery failed during programming. Found ecu no communication. Installed a used ecu. Programmed fine, truck ran. Two day...
2001 Ford Explorer XLT 5.0L Ignition VIN: 1FMZU83PX1
Switched coils to see if miss-fire relocated and it did not. Swithed wires and plug, no change. Did compression test and have stated readings. Thought timing jumped. Pulled timing cover and marks line up. There is some slop in tension of chain. Not sure how mu...
2001 Ford F-150 King Ranch 5.4L Excessive Emissions VIN: 1FTRW08L31
This thing is rich bank1, o2 voltage going up to 1.6 volts, bank2 is normal, fuel pressure is good, verified cam timing it is ok, I unplugged all injectors and coils on bank1 and it still idles fine, unplugged all 02 sensors and bank1 sensor1 still reads up to... Trouble codes: P0172 (Rich exhaust bank1)
2001 Ford Taurus SE 2-Valve 3.0L MIL Lamp on VIN: 1FAFP552X1
Vehicle came back in yesterday with CEL on, was idling very weird. Up and down and sometimes almost dying. No problem when cruising at speed, only at idle. Had codes P1132 and P1152(both indicates rich). Replaced the IAC motor and cleaned the throttle body(bad... Trouble codes: P1138, P1158, P1132, P1152
2003 Ford F-250 Super Duty XLT 6.0L Hesitation, MIL Lamp on VIN: 1FTNW21P33
truck came in with complaint of check engine light , lack of power, and hard start. It never had a hard time starting for me, but has no power off idle when driving. The oil smelt like it had fuel in it, and looked over full, the injector pressure never got ov... Trouble codes: P2290
2005 Ford F-250 Super Duty FX4 5.4L No Start VIN: 1FTNF21505
NO spark with NO Trouble codes... We have injector pulse and good compression and fuel pressure rail at 45 psi. When cranking we have the RPM pid show 152 rpm.s...Crank sensor is difficult to get at with removal of the A/C compressor to gain access to use scop...
2006 Ford Ranger XLT 3.0L abs VIN: 1FTYR10U86
Customer changed front pads and rotors for slow speed abs coming on happens coming to stop at slow speed and only sometimes.I checked the front brakes look good.Checked rears look ok for 54000 miles.Hooked up scanner no codes everything looks good and speed se...
2007 Ford Fusion SEL 2.3L Brake System VIN: 3FAHP08Z17
Brake pedal feels like master cylinder by passing rear chamber, replaced master, bled system, auto bled abs, no change is brake perforfance. Suspect abs unit by passing pressure, also getting hissing noise at abs unit while pumping brakes, no codes in abs syst...
2008 Ford Explorer Limited 4.6L Cuts out VIN: 1FMEU75858
cust. came in with vehicle running great , but said when he was climbing up to about 4 thousand feet the engine died and he had to wait a few minutes , then it would start, we scanned and no codes, runs great tech said maf was dirty , we replaced it and releas...
2003 GMC Sierra 1500 SLE 5.3L Wiper VIN: 2GTEC19T23
Vehicle came in with wiper motor not turning off. checked switch,checked all wires,install redundant ground, ohm wiring, ordered motor, new motor runs but will not park.My test show the new motor is bad, tried another new motor same results, test again and my ...
2004 GMC Sierra 2500 HD SLE 6.6L Turbo VIN: 1GTHK29224
This ones for the Duramax techs, please help! This vehicle came to me for a check engine light & cutting out under accleration. I have codes P0046 & P2563 for turbo control issues. Under acceleration this truck will cough & cut out as if the boost is going awa...
1998 Honda Passport EX 3.2L Poor Idle Quality VIN: 4S6CM58W6W
We have a Passport that came to us from another shop for high idling issues, came in idling at approx 2800rpm. We tested IAC motor & performed Standard PCM tes light test for IAC control, works well. Cleaned ground by Cruise control module. Tested TPS sensor, ...
2003 Honda Civic LX 1.7L No Start VIN: 2HGES16603
Has anyone run into a 1.7 Civic with a start stall within 3 seconds.Fuel pressure 40 psi no codes.What was your fix? Thanks inadvance. Trouble codes: N0
2006 Land Rover Range Rover HSE 4.4L center console VIN: SALME154X6
After the car sits for a while and you open a door, a loud clicking noise is heard coming from the center console area behind the clock/ventilation controls. The rate is about 2 clicks per second and lasts for about 10 seconds. Once it stops it will not happen...
2000 Lexus RX300 3.0L MIL Lamp on VIN: JT6HF10U4Y
Does the ipcsend voltage to the ecu? or what tells the ipc to send it? Trouble codes: P0500 (Vss malfunction)
2006 Lexus GS300 3.0L Drive-axles VIN: JTHCH96S76
Thanks for your time and replies. We have a rattle in the left front that is not harsh. Sounds like body panels or something like that rattling on light bumps at slow speed. We have taken all the splash panels out,Fog light and even the sway bar links and roa...
2001 Mazda Tribute ES 3.0L no power VIN: 4F2CU08111
SUV came in with a no power on hills. Has all of the symptoms of a blocked exhaust. It wont go past 3500 rpms. Tested both precats at the upper O2 sensor. no real problems found 2-3 psi WOT. Removed the rear pre cat and inspected it. It looks ok. no damage. (m...
2006 Mazda 6 Mazdaspeed 2.3L Misfire VIN: JM1GG12L36
Hi Mazda Techs, We have a [...] that has an intermittent missfire that only occurs at 3200-4000 rpm in 3rd gear. it initally arrived with no codes and on the first t.d. in late afternoon it had an intermittent mifire that lasted less than 2 seconds. Whe... Trouble codes: P0300
1991 Mercedes-Benz 300SL (Car) 3.0L Hesitation, Stall, MIL Lamp on VIN: WDBFA61EXM
When accelerating, especially when cold, vehicle studders and hesistates. Fuel system seems very lean, Check fuel filter, was fine, fuel pressure was fine. coolant temp sensor checked out. suspect possible differential pressure regulator? checked wiring found ... Trouble codes: 17 (oxygen sensor short to ground)
1992 Mercedes-Benz 300SD 3.4L Fuel Injection VIN: WDBGB34E9N
92 300SD had oil leak at injection pump and engine block o-ring, set timing at 14deg ATDC install pump timing lock, and remove pump, replace o-ring and side,bottom and rear cover gaskets,reinstall pump checking timing marks.Now engine very hard to start when s...
1994 Mercedes-Benz E320 3.2L Soft Top VIN: WDBEA66E5R
I have a convert top that will not open. The lock cylinder for the rear is leaking so bad it will not work the unlock cylinder. Is there a way to manually release the soft top rear lock so I can replace cylinder? Thanks for help! mickey
2002 Mercedes-Benz S55 AMG 5.5L ABC Ride height control VIN: WDBNG73J32
Customer came in with this vehicle stating that the ABC Hydraulic Ride Control System has failed. The vehicle at that time was fully dropped on the right side, and tire was rubbing on right rear. Connected scan tool and checked codes. C1526 002 C1526 008 Also ...
2002 Mercedes-Benz C320 3.2L all cabin electrics VIN: WDC2030642
vehicle was dropped off with this remark,nothing works in car,so i check turn ign on,evering thing functions,windows,blinkers,wipers instruments,etc.start engine everything stops,car runs ok, check fault codes in front sam, input signal circuit 15 not ok,input...
2006 Mercedes-Benz SLK280 3.0L Burnt VIN: WDBWK54F16
Hi Everyone, and Thanks in advance for any assistance. We had a 2006 Mercedes SLK280 towed in. No Start. Tracked it to computer located on top of engine burnt. Trying to find out if possible for the local Mercedes dealer or anyone else to re-program a used com...
2006 Pontiac Grand Prix 3.8L cel VIN: 2G2WP55206
i can command the air pump and air pump relay through solus, im thinking stuck closed egr. car runs fine smooth operation just keeps shooting cel
1993 Saab 9000 CDE Turbo 2.3L No Start, Poor Idle Quality, Stall VIN: YS3CL48M5P
OK SAAB techs: We are a Saab- heavy shop but this one takes the cake! After our initial repair, vehicle began to stall/ no start. Checked PIDS and saw no response on the Throttle when doing koeo sweep test both using pedal and manually moving throttle blade. V... Trouble codes: 675B0, E7590 (Safety system faulty operation)
2005 Saturn Vue 2.2L MIL Lamp on VIN: 5GZCZ23DX5
hi everyone, i have this saturn vue thats sets po455, i have smoked the system two times i have have replaced the vent valve.purge valve. gas cap. i have 1-5 volts fuel tank pressure sensor no visable smoke no leaks,, has any else had one like this.thanks Trouble codes: P0455
1969 Shelby gt500 428CID oil light
best i can tell car uses only one oil sender, the gauge works fine, but oil light always on. grounding the wire at the sender pegs the gauge, but wire removed light still on. i have not pulled the cluster yet, have a time frame to get it to the body shop, but ...
2000 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3HN86R8Y
This 4 runner has history of setting p0420.this is a california vehicle. customer has had convertor replaced less than two yrs ago.front o2 recently replaced.Dealer wants $2400 for a a pair of convertors, I talked to a local exhaust shop who told me these mode... Trouble codes: P0420
2002 Volkswagen Beetle GLS 1.9L No Start VIN: 3VWCP21C52
No start and no fuel to the injector pump... ? is there a lift pump in the tank on the VW 1.9 Diesel... Thanks in advance.
2000 Volvo S40 1.9L MIL Lamp on VIN: YV1VS2551Y
this one is eating up my days...has good signal from rpm sensor to the pcm via lab scope still sets rpm signal any help would be great Trouble codes: 78 (engine speed sensor)

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1992 Chevrolet K1500 Suburban 5.7L Poor Idle Quality, Stall VIN: 1GNFK16K1N
First of all, thank you to all of those who replied. All of your ideas were great! I ended unplugging output nipple of egr control solenoid and left it off, returned vehicle to customer. Customer has been driving vehicle on short and long trips for a week n... Trouble codes: 33 (Map sensor voltage high).
1994 Chevrolet K2500 Suburban 6.5L Rear A/C VIN: 1GNGK26F6R
We decided to take a chance and go ahead and replace the rear evaporator core even though we had flushed it out and now the system is working fine. Thanks to all who responded to this problem.
2003 Chevrolet Malibu LS 3.1L Hesitation, Surge, Misfire VIN: 1G1NE52J23
I have a digital recordable vacuum pressure gauge that helps in times like this. just sitting in the stall, did a throttle snap and gauge goes past 5 psi in a blink of an eye. She had the cat put on at a muffler shop, called me today and can't believe the powe... Trouble codes: P0404 (EGR Performance).
2008 Chevrolet Cobalt LS 2.2L Mechanical VIN: 1G1AK18F48
OK Thanks everyone. Car is 4 days out of extended warrenty. Customer is on hold.
2010 Chevrolet Express 1500 4.3L fuel pump VIN: 1GCUGADXXA
We found under the fuse box there are three connectors. The black connector with 4 wires had a broken pin that guess what... went to the fuel pump. Apparently there is a bulletin for this that I got the Chevy dealer to send me. I'm not sure why its not list...
2007 Dodge Ram 2500 Truck ST 6.7L MIL Lamp on VIN: 3D3KS28AX7
I did reflash the ECM to no avail. I informed the customer that I believe it requires a new ECM to fix the problem, but that I would not mind at all if he went elsewhere for a second opinion. The dealer also told him that it needs an ECM. At $2000.00 he decide... Trouble codes: P2580 (Turbo speed sensor circuit).
1996 Ford Explorer Sport 4.0L throttle response VIN: 1FMCU22XXT
Well after blocking all vacume ports and egr port... spraying down the intake manifold with no change in readings I presume it may be the computed ...customer taking it to ford dealer as suggested by us to get a second opinion...thanks for all that replied
2005 Ford Escape XLT 3.0L steering wheel VIN: 1FMYU93145
Well, we did not completely resolve the problems with this vehicle. I really appreciate all the suggestions, especially from the folks who read what had been done and added other suggestions. I received suggestions to check the flywheel and torque converter ...
2008 Ford Ranger XLT 3.0L Accessories VIN: 1FTYR44U48
Thanks for the replys.All fuses are good and will check on pressure switch when cust returns.Thanks again
1996 Hyundai Sonata GLS 3.0L MIL Lamp on VIN: KMHCF34T7T
well, after exhausting all resources available to us, we managed to "cheat" this vehicle by creating a Y style connection at the egr solenoid effectively allowing vacuum to escape all the time and then when the solenoid closed it would apply vacuum to the egr.... Trouble codes: P0400 (egr system malfunction).
2001 Lexus ES300 3.0L pcm VIN: JT8BF28GX1
Hi every body! Iam back. Thanks very much for your advice and time. I learned a lot from every one of you. As I said in my post, the codes were erased only one time; and all the monitors reseted except evap and catalyst.One thing that failed to mintion in my p...
2002 Mercedes-Benz C240 2.6L compressor VIN: WDBRF61J72
We finally found the problem. Suction hose between low side fitting and compressor colapsed internally. Causing restriction on compressor inlet. Barrier hose has a internal liner and runs close to exhaust causing seperation. Finally cut hose open to find probl...
2003 Mercury Mountaineer 4.0L Front Differential VIN: 4M2DU86K73
I got a lot of responses on this one, everyone saying it needed matching tires. This I knew & told the customer, even before we repaired vehicle, what surprised me was how quickly it would overheat the diff, a matter of 20 miles or so. We put on matching t...
2009 Mercury Mariner 2.5L MIL Lamp on VIN: 4M2CU81799
O/K Heres the Update... After continuues Reading various precedures, Im going to do what doug says and verifying what Ive read, RUN THREW DRIVE CYCLE... I know i did every thing according to all procedures (including checking engine vacum) and test that is kno... Trouble codes: P0451, P0456.
2007 Mini Cooper S 1.6L MIL Lamp on VIN: WMWMF73557
Will from Minnesota hit the nail on the head. The manufacturer's definition from the code is that a difference in actual manifold and the supposed calculated pressure exists, which would suggest an intake manifold or related leak. Although the car ran very wel... Trouble codes: P1497.
2002 Nissan Altima S 2.5L Ckp VIN: 1N4AL11EX2
Thanks for all your help. Odd as it is, the signal plate is completely missing off the crank.
2005 Nissan Armada LE 5.6L srs light VIN: 5N1AA08A65
Vehicle has yet to return for further testing. When it does I will check connections and powers and grounds to srs controller. thanks for the replies.
2000 Saturn LS2 3.0L Engine Oil in coolant VIN: 1G8JW52R4Y
Thanks for all the great replies, sounds like the oil cooler is common problem based on all the replies, I had just never come across it yet, removed the oil cooler and pressurized and sure enough it was leaking, replaced oil cooler, flushed out cooling system...
2000 Toyota Corolla VE 1.8L valve timing VIN: 2T1BR12E0Y
well tech got this one fixed,special thanks to sean kelly for help on this one,the manuals,all three, were not much help,i've never seen timing marks like this-they were not there.i finally went by the lobes the way sean described and it worked,thanks again IA...
2006 Toyota Prius 1.5L No Start VIN: JTDKB22U86
thank you to everyone who replied and for your time!the engine oil was overfilled by 1/2 quart and we drained to correct level.the aux. battery read only 8.5 volts we charged the battery for approx.1-hour put back in car and discharged rapidly to 8 volts so, b... Trouble codes: P2111, P3190.
2000 Volkswagen Beetle GLS 1.8L Poor Idle Quality, Hesitation VIN: 3VWCD21C0Y
Customer decided to take the vehicle to the dealer and see if there were any computer updates. One thing was, we removed the computer to check all the connections, reinstalled and it lasted about a 1 1/2 weeks. Strange.. Trouble codes: 17953 (Throttle Valve Controller), 17950 (Angle Sensor 1 for Throttle Actuator G187).
2005 Volkswagen Jetta GLS TDI 1.9L No Start, Cuts out VIN: WVWSR21J45
Well it was long and trying. As with many situations hind sight is always 20/20. The one code that reappeared always was the p0321 engine speed sensor. The scope pattern always seemed odd. We removed the sensor and inspected the tone ring. The tone ring had 5 ... Trouble codes: P0321, P0322, P0674, P2564.
2007 Volkswagen GTI 2.0L MIL Lamp on VIN: WVWFV71K27
This one turned out to be an odd fix, but certainly worth noting for anyone involved with these vehicles. At the bottom of our problem was a production change in the fusebox that we replaced. VW superseded the part number to the box that was originally insta...
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