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Prev Professional Automotive Repair Technical Discussions for July 5, 2010
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Open Help Requests for All Makes and Models
Help Request Answers
1988 BMW 325i 2.5L tps VIN: WBABB22030
This one is one of those i should probably run from . This car has some intermittent faults and fault codes 3 - 5 - 17 - 22 . It will surge on start up sometimes and run fine at other times . It's idle control is erratic and when driving feels as if all curren...
2001 BMW 740iL 4.4L Forward Gears VIN: WBAGH83401
Car hardly moves forward reverse is ok
1983 Buick Regal 3.8L Stall
im gonna need a real pro on this one--one that knows the Rochester feedback 2 barrel carb and its tuning. the problem is a flat spot off idle--transition fuel. when starting from a stop, the engine coughs lean and dies. Feels exactly like a bad accelerator pum...
1985 Buick Regal Grand National 3.8L Hesitation, Misfire VIN: 1G4GK4791F
Have misfire when accelerating. also will be intermittent. did find that the number 6 plug and wire had carbon tracking. replaced all plugs and wires. still have a misfire on load not as bad as before but still present and very noticable. fuel pressure good at...
1996 Chevrolet C3500 Silverado 6.5L Starting VIN: 1GBKC34F7T
Hi guys, this truck is our ramp truck we bought it this past spring. It has 240k miles on truck but motor has been replaced at some point ,not sure of mileage on motor maybe 50-60k miles? Just a guess. Anyways when the truck is hot and you shut it off it will ...
1998 Chevrolet Express 2500 4.3L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1GCFG25W51
Some cold starts this thing cant stay running, it back fires on accel, no misfire codes. It cuts out and runs poor until it goes into closed loop. Then it runs fine. Codes came on during closed loop= P0171 & P0174. Engine up to temp and driving around 25mph. R... Trouble codes: P0171, P0174
2003 Chevrolet Suburban 1500 LS 5.3L Valve Train VIN: 1GNEC16Z83
I have a noise in the valve train. A tapping that increases in volume from being barely discernable at idle to a sharp staccato sound above 2k rpm. Cancelling cylinders via injectors makes no change whatsoever. We removed the driver valve cover and ran the en...
2005 Chevrolet Tahoe LT 5.3L Ebcm VIN: 1GNEC13T85
Replaced ebcm, now i see it sets c0040, key on engine off, which it probably was to begin with. Thought i followed flow chart, verbatim. Oviously not. I have not reflashed or driven over the 8 mph yet. Any ideas? did i miss something in the text about error wi...
2005 Chevrolet Venture LS 3.4L No Start, Cuts out, Stall VIN: 1GNDV03E55
hey folks!this car come on the hook with no start problem.first of all i had to charge the batterr and install a new starter after the customer kept cranking.still no start till check for codes and p0386 show up,installed new crank sensor B and no luck,then wi... Trouble codes: P0336, P0386, U1000
2006 Chevrolet Silverado 3500 LT 6.6L MIL Lamp on, Goes into limp in VIN: 1GCJK33D96
The customer was driving and experienced a loss of power. He stopped and changed the fuel filter and continued driving for maybe 50 miles when he experienced the same problem. Thinking he may have had bad fuel he replaced the filter again (WITH NAPA GOLD FILTE... Trouble codes: P0087 (Fuel Rail Pressure Low)
2006 Chevrolet Cobalt LS 2.2L left front door latch VIN: 1G1AL55F66
HELP! Left front door will not open. Handles and linkages intact. Lock actuators (inside, outside and power) and linkages intact and "working". Feels just like the right side which works. Can see all linkages and latch parts that are moved by the linkages (inc...
2007 Chevrolet Equinox LS 3.4L Air Bag system VIN: 2CNDL63FO7
I had A customer come in with a Air bag light on. He said a dealer had diagnos it saying it needed a passenger presence module or a diagnostic module or both. We tryed the presence first then the diagnostic module no fix. The only code it had to begin with was...
2001 Chrysler LHS 3.5L No Start VIN: 2C3HC56G71
I have a 2001 Chrysler LHS 3.5 Liter engine. Had the computer reprogramed at the dealer. I can put the key in to start nothing happens. Dash lights come on no starter response.
2001 Chrysler Town & Country EX 3.8L Front & Rear Blower VIN: 2C8GP74LOI
Vehicle was perfect untill today the front & rear blowers stoped working. There is no power at the #10 fuse [40amp] and no power at the #12 fuse [25 amp]. I have power on the 2 circuits of the relays and continuity from the relays to the respective fuses. I ha...
2001 Dodge Grand Caravan Sport 3.3L Compressor VIN: 2B4GP44311
Hello guys, need some chrysler help here. Replaced compressor 2 mos. ago, along with new pcm and fan control relay, due to cooling fans not operating correctly. Compressor was replaced due to clutch burning up. Ran through tests on mitchell and can manually op...
2003 Dodge Grand Caravan 3.3L No Start VIN: 2D4GP44333
this van is a no start with no communication to computer i've checked all powers and grounds they're ok (checked with a headlamp test lite)i read in my verus scanneer that the ckp sensor shorts out and to unplug it and look for 8volt reference i have no voltag...
2008 Dodge Ram 2500 SLT 6.7L evaporator VIN: 3D7KS28A48
got this vehicle in for no a/c after around 15 minutes. ran vehicle and confirmed complaint. found fan motor coming on loud and poor airflow from vents. inspected with bore scope from drain tube and found evaporator freezing up. a/c working perfectly fine and ...
1993 Ford Crown Victoria LX 4.6L Poor Idle Quality VIN: 2FALP74W8P
Hi, this car has a problem with the idle control. It idles fine until the ac compressor kicks on and then the rpm drops to the piont that the compressor kicks back off. As soon as the rpm rises enough it will try the compressor again. It will usually take two ...
1994 Ford F-350 XL 7.5L Poor Idle Quality, Surge, Misfire VIN: 1FDKF38G8R
This truck is low milege purchased from highway department on surplus sale. Truck runs fine no codes and data stream looks normal. After truck gets hot it will stumble and sometimes die, check engine light comes on and it will run but is very rich. Scan tool w...
1996 Ford Explorer XLT 5.0L Mechanical VIN: 1FMDU35P9T
Good day all!this vehicle came in for coolant loss found oil way over full with coolant.diagnosis pointed to prable intake or head gasket failure.pulled intake didn't see anything definitive.so figured it had to be head gasket issue.had heads resufaced and che...
1997 Ford Taurus G 3.0L Cooling System VIN: 1FALP51U8V
this litteraly is one of my top customers!!! vehicle is driven around the block about 1.5 miles. Pull back into shop. Resivoir looks like a tea kettle spewing steam , and then lots of coolant boils over as the resivoir fills. Remove and inspect waterpump: imp...
2004 Ford F-350 Super Duty XLT 6.0L 2-3 shift VIN: 1FTSW31P04
This is a 04 6.0 with a torque shift auto. when cold truck does not command 2-3 shift untell you back way off the throttle then it will shift. After getting back into throttle it will hunt between what feels like 2nd & 3rd (possibly 3rd & 4th) briefly then beg...
2004 Ford F-350 Super Duty XLT 6.0L low power VIN: 1FSTW31P34
attention 6.0l experts, i need help. the symptom, is that at 60 mph, and above, this truck lacks power. this is a truck that was being diagnosed by a coworker, then dumped in my lap two weeks later. he found a code in the computer, that when he searched in id...
2004 GMC Sierra 3500 6.0L No Start VIN: 1GDJC39U54
We have a strange on here. Customer claimed truck strated for a few seconds then died and has not started since. We have fuel pressure,inj. pulse but no spark. Coils have 12V. and ground and ohmed out the control and ref. wires from PCM and coil harness. All f...
2007 GMC Sierra 2500 HD Classic SLT 6.6L Safety VIN: 1GTHK23647
Iinstalled new rims on this truck ..put in new tire pressure monitors right from gm ... Went through the reset procedure as in the manual staring at left front and ending up at left rear ..upon completion of the left rear it is supposed to single beep than dou...
1992 Isuzu Trooper LS 3.2L Excessive Emissions, Poor Idle Quality, Surge, Cuts out, Stall, Misfire VIN: JACDH58W4N
vehicle runs extremely rough and will not idle, feathering throttle to keep it running and scanner reports integrator at ~220 and above. Black smoke from exhaust, etc. Tested body and engine grounds, and disconnected alternator, the engine runs well with the a...
1994 Jaguar XJS 4.0L MIL Lamp on
Customer presented car with CEL on code 17 stored.States that car sometimes has long crank,but starts. Some times it will start on the 2nd or 3rd try.Says that it runs good on road . TPS had no glitches BUT I looked at TPS during cranking and it would drop out... Trouble codes: 17 (tps lower than min spec)
1995 Jeep Grand Cherokee Limited 5.2L Gear Oil VIN: 1J4GZ78Y1S
Vehicle came in with the teeth stripped off the pinion gear and all the bearings had been hot. Replaced the ring and pinion and all the bearings. Got a good pattern on the ring gear and the back lash was 8 thousandths. No noise from the front end and no clunki...
2006 Jeep Liberty Sport 3.7L No Start VIN: 1J4GL48KX6
vehicle wont start. No bus message displayed on odometer reading. Can data line down not cumminicating scan tool. SCI data line down. Looking for century key remote module. If anyone knows locations of module will help.
2005 Kia Spectra EX 2.0L drl VIN: KNAFE12135
drl lights inop. relay box in engine room changed. and relay changed. all control wiring checked ok
2003 Lincoln LS 3.0L temperature VIN: 1LNHM86S13
this vehicle came in for not cooling enough, it was cool at drivin speeds warm at idle. pressures high at 100, low at 50 temperature at 65. installed a expantion valve pressure are at high 100, low at 40 temperature at 57.
2004 Mercedes-Benz C240 4Matic 2.6L Hesitation VIN: WDBRF81J44
I've never seen a symptom like this before. The customer described the problem as a hesitation but it is more than and different than a hesitation. The idle quality is good, power is good, engine accelerates good but when trans should upshift it delays for a s... Trouble codes: P20D4
2005 Nissan Frontier XE 2.5L 4-5 shift VIN: 1N6AD07W75
The transmission shifts fine 1-2-3-4, then it downshifts into 3rd instead of upshifting into 5th. The only way to get it to shift back to 4th, without starting in 1st again, is to cycle the overdrive button. Then it shifts back and fourth from 3rd and 4th just...
2002 Oldsmobile Alero GX 2.2L OBD II monitors VIN: 1G3NK52F2C
OBD II readiness monitors for O2 & CAT will not set. It will set all other monitors evap, o2 heater ect. no problem time after time. I have followed a drive trace to the letter multiple times for these monitors. No MIL, or pending MIL codes. Do I need to run t...
2000 Pontiac Grand Prix SE 3.8L key wont return VIN: 1G2WJ52K2Y
top of the day fellow techs.I hope it's been a great 4th of july for everybody.this 2000 grand prix has been a pain in my side.the problem is the ignition key won't return to the off position after driving.I've driven the car and come to a stop, put it in park...
1983 Porsche 928 S 4.7L Excessive Emissions, No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, **no mil lamp** VIN: WP0JB0924D
customer purchased vehicle which was delivered to him on a flat bed the previous owner drove the car off the truck and parked it and left. after that the car never ran properly! found bad gas in tank drained and fill with fresh replaced filter and pump and fou...
1987 Porsche 911 Carrera 3.2L electric windows VIN: WP0EB0915H
need some help pinpointing problem with windows, neither window works, when testing switches all grounds. could not locate fuse for affected system. if anyone has any suggestions they would be greatly appreciated also speedometer and odometer don't work either...
2005 Toyota Tacoma 2.7L No Start, Stall VIN: 5TEPX42N25
this truck came in multiple codes p0351-p0354 all cyl issue truck runs great no misfire but keeps resetting same codes intermitently starts and dies and sometimes doesn't start for 8-16 hrs according to the customer. now unable to duplicate the stalling or the... Trouble codes: P0351, P0352, P0353, P0354
2005 Toyota Sienna LE 3.3L speedometer,abs,electric windows,air conditioning VIN: 5TDZA23C15
Ok toyota techs, this one has got me baffled. Customer called me over the weekend and said the brake lights were not working(but only the left and right ones) the center marker works. I was out of town, so I said it must be a fuse or something. They took it to...
1998 Volkswagen Beetle 2.0L Inmobilizer system VIN: 3VWBB61C7W
Hi, today at the mall, when I tried to open the car with the remote, it wasn't working, so I opened with the key, I turned on the ignition and the alarm went on for a while, so I tried to times but it was the same, I bought new batteries for the remote, but wa...
1999 Volkswagen Passat GLS 1.8L Abs Moduel VIN: WVWMA63B8X
Would like to know if anyone has used a snap on Modis to code abs module, and if you have what is the procedure I have a Modis with European and cannot figure out how to code used Module Thanks Joe
2004 Volkswagen Touareg V6 3.2L Cooling Systems VIN: WVGBC67LX4
Dealer diagnosed thermostat needs to be replaced. Can this be done without removing the transmission as the dealer says? mitchell flat rate is 10.1 hrs.

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2006 BMW 650i 4.8L Unknown VIN: WBAEK13456
I would like to thank everyone for there input. There was no play in the wheel bearings, although it sounds like the front left wheel bearing is going bad. I was also told about lower control arm bushings causing problems. The owner will be continuing to...
2000 Buick LeSabre Custom 3.8L Vent Temp VIN: 1G4HP54K4Y
Thanks to all who replied. Ended up removing the blower motor and cleaning the evap. core. System was still not very efficient while idling in the shop, but, blew in the 40's on medium blower speed going down the road. in the 50's on high speed blower. Not sur...
1996 Cadillac DeVille Concours 4.6L high pressure VIN: 1G6KF5295T
Thank you to all who replied...faulty equipment coupled with a bad low pressure sensor were the issues!
1995 Chevrolet C1500 Silverado 5.7L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 1GCEK14K6S
Sorry For The Wait And Thanks Again To Everyony For All The Great Help. The Problem Was The New O2 That I Had Put In. I Guess You Can't Always Trust A New Part. Many Thanks
2004 Chevrolet Silverado 3500 6.6L Unknown VIN: 1GCJC33264
Thanks everyone for all the help!I should have mentioned that this is a 2 wheel drive.Tyson from Utah hit right on!The middle u-joint was locked up.I have never had a u-joint that gave these symptoms.I used just the parking brake and shudder was still present ...
2002 Dodge Ram 1500 SLT 5.9L RS Hi-Beam, LS Low-Beam, Front Turn Signals, LR Tu VIN: 1D7HU18ZX2
Thanks for all the replies. Most of you had trouble with the power distribution box so I inspected it a little closer and notice a little bit of green on the bottom. I decided to take the box apart and found corrosion on the circuit board. Order a new box and ...
2008 Dodge Magnum SXT 3.5L Steering VIN: 2D4GZ37V68
Thank you guys. We thouroughly inspected all front end components and could not fault anything. Ordered in a set of raybestos extreme service brake rotors and put the advanced technology pursuit package brake pads in and the customer is surprised on how much b...
1985 Ford Ranger 2.0L Mechanical VIN: 1FTBR10C5F
Thanks Everyone for the help using the prybar technique worked for me i knew there was someway to do it but Old Age has taken it's toll on me.Have a great day!
2003 Ford Explorer XLT 4.0L Differential VIN: 1FM7U73K23
The transfer case control module was the culprit. I unplugged it and problem went away. After talking to several other shops each one has had there fair share of issues with the same problem. replaced module and no further issues.
2008 Ford F-250 Super Duty XL 5.4L No Start VIN: 1FTSX205X8
i finally gave up and called rick layton (diagnostic on wheels). ricks snap on would talk to all the systems and found out that the only problem that i had was that i had not plugged in the inertia switch (somehow i wish it had been more but oh well). his ids ...
1995 Honda Accord EX 2.2L Takes off in 3RD VIN: 1HGCE18600
Dale was spot on. Shift solenoid screen was completely clogged cleaned and all is well. Thank you all for the tips and insights very good for the brain.
1999 Jeep Grand Cherokee Laredo 4.7L No Start, Stall VIN: 1J4GW68N6X
it was the pcm i wiggled the wires at the pcm and it shut off then wiggled them again and it started so i shipped it to the dealer. thanx everyone who replied.
1999 Jeep Grand Cherokee Limited 4.7L blend door actuator VIN: 1J4GW68N1X
Thanks everyone that replied. Yes had to remove instrument panel and plenum again. I fixed the foam gasketing seal at top of plenum causing an air leak at mating point around center of instrument cluster and that leak reduced air flow out of righ...
2001 Lexus RX300 3.0L Hesitation VIN: JTJHF10UX1
I would like to extend my gratitude to you for your input on this repair. I cleaned out the MAF, which did not look dirty but it got clean nonetheless. The customer noticed a vast difference. I also decided to replace the rear sensor as it seemed to not rea... Trouble codes: P0300 (Random misfire), P0301 (Misfire 1), P0303 (Misfire 3), P0305 (Misfire 5), P0171 (along with P0174 - front and rear bake lean), P1130 (A/f sensor circuit range/performance malfunction).
1997 Pontiac Grand Am SE 2.4L Clatter in Engine VIN: 1G2NE52T6V
I want to thank all who tried to help on this tough situation but we did not ever get the car fixed because of how labor intensive it is to dig into the lower engine. We told the customer to drive it like it is until something worse happens and then put anothe...
2003 Pontiac Aztek 3.4L Stall VIN: 3UEIRJ38K3
custumer had hot wired ac compressor causing a non stable idle upon start up Trouble codes: P0300.
2000 Toyota Tundra Limited 4.7L No Start VIN: 5TBBT4815Y
Thanks to those of you that responded to my help request. My original theroy of a wiring issue was correct i guess. The lead from the sending unit to the pump (in the tank) was where my problem was located the new wiring kit from toyota as well as a new pump, ...
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