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Prev Professional Automotive Repair Technical Discussions for July 12, 2012
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2000 BMW 540i 4.4L No Start VIN: WBADN634XY
After replaceing DSC control unit, we reprogram the car with ISTA/P (BMW no a copycat) everything went OK, DME and EWS synch, have some warning information.When trying to start the starter motor cranck but engine is not starting, DME shows a tampering starter ...
2002 BMW 530i 3.0L Cuts out VIN: WBADT63422
Hello BMW techs: Have this 530i with an oil leak, valve cover and on the left side oil tube. I know the is an update for the crank breather sytem.Now the customer complained about stalling while driving but have not been able to duplicate, has all codes listed... Trouble codes: 0X87, 0X33, 0XF3, 0XF2, 0XA1
2000 Cadillac DeVille DHS 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KE57Y5Y
Hello all Just got done doing head gaskets and timeserts started vehicle and noticed right away that it had a misfire at idle and the MLS light was on. Increased rpm to around 1800 and noticed engine smoothed out. Checked for a misfire with the scanner, code p... Trouble codes: P0300, P0436
1996 Chevrolet Cavalier LS 2.2L engine VIN: 1G1JF5244T
This car with fire with gas pedal to the floor and cranking it sounds like it is flooded but plugs are dry and oil is ok. Replaced ignition module with used one does the same thing. Once the scanner would not communicate then suddenly did. The Theft System lig...
1997 Chevrolet Venture 3.4L Electronic VIN: 1GNDX06E2V
A/c system have dual system. Automatic controls Rear a/c works great. The problem is the front a/c blows luke warm air and a little bit of cold air can be felt at the fascia. Touching the a/c at the inlet of evaporator is ice cold, coming out is warm to touch....
2006 Chevrolet Silverado 2500 HD LT 6.6L glow plug light on VIN: 1GCHK23DX6
This truck came in with glow plug light on all the time. Traced wiring communication wires out from TCM to GPCM and found a broken wire-repaired broken wire, ohmed wires out to make sure that they were not open, grounded or shorted to voltage. Also checked con... Trouble codes: U0106
2006 Chevrolet Cobalt LT 2.2L Tcm VIN: 1G1AL15F26
vehicle came in with evap code po496. fixed that problem and took it on a test drive, now vehicle has code u0101 lost communication with tcm. anyone have any idea? need help.
2003 Chrysler Town & Country (Van) LXi 3.8L 8 VIN: 2C4GP54L43
cust brought me vehicle with intermittant no start/no crank condition. i was able to start the vehicle and take it for a test drive right of the bat. no real driveabilty concerns other than mil on p0725 displayed. after test drive i shut off and have not been ...
1996 Dodge Ram 2500 Truck 8.0L Misfire VIN: 3B7KF23W6T
Greetings: Figured I would see if someone else can give me some insight on this. Boss brings friends vehicle in w/ misfire at idle and can be felt when driving but has power. No codes. Genysis scan tool shows misfire on #7 but manual power balance of all cyl...
1998 Dodge Ram 1500 Truck 5.9L air in system VIN: 3B7HF13Z7W
Hey everyone, i have another weird one. I have this dodge that came in with leaking timing cover gasket. Did the timing cover gasket, thermostat, chain and all new gaskets. After installing everything back together filled with coolant, heater on, topped off wi...
2005 Dodge Ram 1500 Truck ST 5.7L Stall, Misfire VIN: 1D3HU18D35
This 5.7 dodge has a misfire most felt when coming to a hard stop. It is bad enough to stall at times. Starts right back up and runs fine. Misfire will hapen slighty from time to time on throtle tip in and on cold starts for the first 10 seconds then clears up... Trouble codes: P0300, P0307
2002 Ford F-350 Super Duty Lariat 7.3L diesel in coolant VIN: 1FTSW31F92
Hi this truck came in for lube service we noticed diesel in coolant, my machine shop tells i have to pull heads off to replace the injector cups one must be cracked i want to pull of injectors first to confirm. I am waiting for the customer to give me the go a...
2002 Ford Explorer XLT 4.0L Pats VIN: 1FMZU63E92
Simple one for you FOMOCO guys. Got this 01' Exploder that is a no crank with codes B1681 and B2103. When I plug my IDS in and command transmit to the transponder it responds as it should, dropping the voltage on the transmit wire from 12v to 0v. Identifix say...
2002 Ford F-250 Super Duty Lariat 7.3L no power VIN: 1FTNW20F42
This truck has 0 power on acceleration. It starts and idles fine with no evident misfires. On acceleration it makes no boost but has a loud hissing sound, almost like a clogged exhaust or air leak from the turbo. Customer was told to replace turbo by another s...
2003 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMZU7EK43
Vehicle intermittently sets rich codes. The first time it happened vehicle seemed to be running slightly on the rich side (fuel trims around 7 to 10) Couldn't find any cause for this as maf was normal, fuel pressure was normal and couldn't find any other issue... Trouble codes: P0172 (Bank 1 rich), P0175 (Bank 2 rich)
2003 Ford Focus LX 2.3L Compressor VIN: 1FAFP33Z03
when you go up hill the ac clutch goes off, BUT it will come on and off when it wants to at times not just up hill but thats when it seems to start.. on scan tool data it shows tps as in "part throttle" but compressor will still be off.watching ac clutch comma...
2005 Ford Expedition Eddie Bauer 5.4L brake lights VIN: 1FMFU18565
Randomly, while the vehicle is parked the brake lights come on, then just as randomly they turn off. This results in a drained battery. I remember GEM problems on earlier expeditions, but alldata doesn't show one that I can find on this year. The fuse panel an...
2006 Ford Mustang GT 4.6L clutch pedal VIN: 1ZVFT82H76
Is there a good trick to bleeding this system, bleeder for slave so close to trans tunnel hard to access, any tips are appreciated. Thanks David
2010 Ford F-250 Super Duty Lariat 5.4L Intake? VIN: 1FTSX2A59A
Still need help with this one, posting it again to see if I get any takers... Really stumped here. We removed the intake on this vehicle to access the firewall behind it for an aftermarket interior installation but now that we put it back on it makes a noise,...
2003 GMC Savana 2500 5.3L Misfire VIN: 1GTFG29TX3
Repaired Van 2 weeks ago for same issue. It is now back P0300. All cylinders are misfiring. Fuel trin 120 to 132 both banks at idle. Miss at lower rpms only. Fuel pressure 57psi KOEO. Engine runs great cold. Do these plastic manifolds crak on or warp and leak?... Trouble codes: P0300 (random cyl missfire)
2000 Honda Prelude 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: JHMBB6248Y
hello everyone , we have this honda prelude that came in with complaint of rough running on startup and mil on. the car does run rough on startup only intermitent and only for 10 seconds or less and clears up and drives great. the codes when it came in were fo...
2003 Honda Civic EX 1.7L A/c VIN: 1HGEM21963
We have this '02 Honda Civic from another shop. The compressor will not engage. The relay is not being activated with the ground signal from the PCM. Looking at the Scan Tool we see that there is not A/C signal being generated withing the PCM. Meaning that the...
2004 Honda Civic EX 1.7L compressor VIN: 1HGES257X4
Hi Honda techs, this civic is puzzling us. It origionally came in with a complaint that the ac didn't work. we found a couple of small leaks charged it and it seemed to work. She brought the car back after a couple of days complaining that the ac doesn't work...
2002 Jaguar X-Type 3.0L Mechanical VIN: SAJEA53C32
i have a jag that lost timing chain on left bank and bent valves need to remove timing cover alldata says need to remove engine was wondering if i could pull timing cover without removing engine need to determine damage for estimate for cust any info would be ...
1999 Jeep Grand Cherokee Laredo 4.7L No Start, Stall VIN: 1J4GW58N6X
This is one fine machine right here! Ok so this jeep will stall out intermittently, usually when hot. When it stalls out, engine will not restart unless it sits for up to an hour. will just crank no start ( no injector pulse, no spark, and no communication wit... Trouble codes: P0725
2000 Jeep Grand Cherokee Laredo 4.0L anti theft/skim VIN: 1J4GW48S5Y
We installed the fuel pump, cleared debris(rust) in tank, impacted fuel sock. Customer had everyone in the neighborhood(all master mechanics) crank the motor and come to the ingenious conclusion that it won't start. Dead batt. Now I get two messages in the cod...
2003 Jeep Liberty Sport 3.7L Misfire VIN: 1J4GL48K63
We have this Jeep in the shop with a constant misfire on Cyl. 3. Although it does not throw a code I've watched it with the misfire counter. I have done a compression test, tested for spark, tested for inj. pulse, and even moved injectors and coils around. It ...
2006 Land Rover LR3 SE 4.4L MIL Lamp on VIN: SALAD25436
Ok guys,from the start I told the shop owner that this 06 land rover lr3 4.4 was out of my league,Im not a european tech (american) this car belongs to one of his friends. Base on the mil codes shop owner to replace the throtle body dealer part (I said bad ide... Trouble codes: P0121, P0102, P2105, U2023
2006 Mazda 3 S 2.3L MIL Lamp on VIN: JM1BK12406
we installed original o2, customer still had. it appears that pcm is defective or terminals have poor contact. We need some ideas how to check contacts to pcm from harness side, as pcm has been replaced and 02 sensor has also. With harness disconnected at both... Trouble codes: P0130, P0134
2006 Mercedes-Benz E350 4Matic 3.5L cruise control VIN: WDBUF87J26
The informaion screen states "Display malfunction" & "Cruise control problem" Drive to dealer. The SRS light is also on the cruise control is inoperative. The rear window sunshade is up and inoperative. Thanks in advance.
2009 Mercury Sable Premier 3.5L Suspension Noise Sounds Like a worn Sway Bar Link VIN: 1MEHM42W69
This car came to me around 8 or 9K miles with a slight sway bar link rattle type of noise on the Drivers side over speed bumps only. Then as time went on it has progressively gotten worse to where the noise can be heard over slight bumps in the road. I sugge...
2003 Mini Cooper 1.6L compressor VIN: WMWRC33423
Car came with a/c inop, bad clutch. Replace a/c compressor and rec/drier. Recharge with .91 lbs R134a and oil. Works good with 40 low and 250 high side pressures. Electric fan cycles on and off at 300 psi. Compressor is very noisey, gets louder with higher rpm...
2000 Nissan Sentra GXE 1.8L air output VIN: 3N1CB51DXY
Hey Guys I have a 2000 nissan sentra that I recently replaced a evaporator on. I charged the system everything was fine checked the a/c and it was blowing nice and cold. Gave the car to a customer and she brought it back 30 minutes later saying its not blowing...
2004 Nissan Xterra XE 3.3L Poor Idle Quality, Surge, MIL Lamp on VIN: 5N1ED28Y94
Intermittent rough idle, surging at light load 30-40 mph, mil on. Freeze frame for p0132 showed 1875 rpm, 189 temp,17 mph, 77.3% load,7% ltft b1, 8.6% ltft b2, -25% stft b1, 3.1% stft b2. I thought vacuum leak b1, couldn't find anything. Cleared codes and drov... Trouble codes: P0132 (B1s1 high voltage), P0152 (B2s1 high voltage), P0158 (B2s2 high voltage)
1999 Saturn SC2 1.9L Stalls VIN: 1G8ZG1278X
Customer's car will stall intermediately- Everytime the fuse for the fuel injectors will blow. 10 amp fuse in underhood fuse block. Checked schematics- fuse only powers the injectors- no other power feed to anything else. Ohm tested injectors- nothing wrong.. ...
2004 Subaru Forester XT 2.5L Poor Idle Quality, Hesitation, MIL Lamp on VIN: JF1SG69614
NIGHTMARE! This Sub came in with a blown turbo (bearing) and lacking power. By the book, replaced turbo with Genuine Suburu parts and gaskets. As recommended, removed oil pan, oil tubes to turbo and thoroughly cleaned insides (cleaned screen and reinstalled in... Trouble codes: P0011
2005 Subaru Impreza WRX 2.0L low power VIN: JF1GD296X5
I have a wrx with no low end power, can't spin the tires on loose gravel. Once the rpm reach 4000 or so it takes off fine, maybe a bit sluggish but not terible anymore. From idle untill 4000 rpm it is terribly slow. car builds 1-2 psi of boost at 2000 rpm, 3-5...
1998 Toyota Tacoma DLX 2.7L Over Heating VIN: 4TAPM62N0W
I installed a new engine it came with a new water pump and thermostat all ready installed so put new radiator and cap belts started engine watched gauges as in a short time it was right below the red so felt the radiator hoses Top hot bottom cold so no water f...
2000 Toyota Camry CE 2.2L MIL Lamp on VIN: JT2BG22K5Y
Car come in with code P0401(Insufficient EGR flow detected). All the vacuum hoses are on the right place according to my Mitchell. The car would die, when I pull a vacuum on the EGR valve. I replace the EGR Vacuum Switching Valve. Clear the code, drove to run ... Trouble codes: P0401 (Insufficient EGR Flow), P0402 (EGR Flow Excessive)
2001 Toyota Sequoia SR5 4.7L Poor Idle Quality VIN: 5TDZT34A21
Thank you for reading this. This is kind of weird. Here is the problem. This car idles smooth as long as you don't engage the AC. Additionally, it will set misfire codes on most of the cylinders seemingly only at idle or when decellerating. Other than at idle...
2002 Toyota Camry LE 3.0L Compressor VIN: 4T1BF32K52
HELLO TOYOTA TECHS: I hve this 02 camry with no AC. Car came in after customer tryed to carge the system with over counter kits. I evacuated recharged system and found no leaks, but still comprssor won't go on when AC is requested. The green light on the knob ...
1993 Volkswagen EuroVan MV 2.5L Unknown VIN: WV2MC0706P
Hey all, This Eurovan came to us with an A/C compressor locked up. Customer stated that it hs been replaced 3 or 4 times in the past 4 years at other shops around the country. The dryer appeared to be original. We replaced the compressor, dryer, expansion valv...
2001 Volvo V70 X/C 2.4L a/c compressor shuts down during driving VIN: YV1SZ58D31
first thanks to all that take the time to look at this request. now this thing is becoming a problem. intial code led me to replace the fan motor behind the climate control panel, no big deal sys. worked great released car. cust. bring veh. back 3 days later a...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1967 Chevrolet C10 Pickup 5.3L 3-2shift
I extended the the arm on carb for the tv in ordered to get more throw. I was able to adjust it so we had a very minimul clunk on downshift and good upshift timing. Customer said it would pass. I am still disappointed with the way it works because it shifts...
2000 Chevrolet Impala 3.4L No Start, Stall VIN: 2G1WF55E1Y
Thanks everyone for your replys! The problem as described to me from the beginning was very odd. The problem was the vehicle would run fine until you had to re-fuel then it would run very rough and start and fall dead. I finally found the problem and that is t...
2005 Chevrolet Impala 3.8L Stall VIN: 2G1WF55K55
Customer has decided to "get rid of this dog" (his words not mine), we could never really find what were losing when the vehicle would stall. The only thing we found was a occasional wierd cmp sensor pattern, we replace cmp sensor and checked the magnet on the...
2005 Chrysler PT Cruiser Touring 2.4L engine VIN: 3C4FY58BX5
Thank you everyone that took time out to help me with this! As everyone said it turned out the PCM failed. Replced it with a new one and had it flashed and she runs like new. Thanks again Pete [...] Transmission Sumter SC NEVER PULL ANYTHING LOOSE THAT CAN ...
2001 Dodge Ram 1500 Van 5.2L No Start, Stall VIN: 3B7HC13Y51
thank you again to all of you fellow technicians,for all the help you provided me,and yes most of you were right on the target,when the truck stalled out I was loosing the power voltage at the PCM.also I noticed that my TPS was loosing the 5 volts signsl,I als...
2001 Dodge Caravan SE 3.3L MIL Lamp on VIN: 1B4GP25391
Almost all of you nailed it. It wasnt a short in the sheathing part though the wires were getting stuck together, it was a failure of the wiring right at the connector. 6 bare wire with 3 touching. oddly enough the 5v ref was intact but the others were telling... Trouble codes: 1496 (5 volt reference low code).
2010 Ford F-250 Super Duty Lariat 5.4L Intake VIN: 1FTSX2A59A
I have tried several things. I ran the vehicle with the air clean assy off and the vehicle still made the noise. I pecked on the IAC valve with no change to the sound. I pulled the intake and inspected it and could find nothing wrong and also put on new intake...
1999 GMC Yukon Denali SLE 5.7L No Start VIN: 1GKEK13R7X
Everything is still doing what it is supposed to do, so I can't check for the suggestions from you guys. Thanks for all the help. If it fails again, I'll try some of the ideas and let you know. Thanks again. I just love intermittent problems.
2002 GMC Sonoma SLS 4.3L No Start VIN: 1GTDT13W82
Thanks to all that replied. after truck running good for a week it went down again and was able to verify the fuel pump. Thanks again
2001 Honda Accord LX 2.3L Unknown VIN: JHMCG66531
thank for all the help guys i replaced the air flow ratio sensor from the dealer and this car work ok dont used after market sensor thank again
2000 Isuzu Rodeo LS 3.2L Misfire VIN: 4S2DM58W0Y
Thank you guys for taking the time responding to my post. Also apologize for describing the situation without the waveform that i was suposse to send alone with it, i guess other wise the post itself would it be more understandable...that was my fault,i'm so s... Trouble codes: P0335, PR1MA, 1GN1T, 'E'.
2002 Lexus RX300 3.0L Passenger Side VIN: JTJGF10U32
it ended up being the controller, for some reason it was sending the 12 volts to the air bag module, weird ! car was very clean and no water damage...
1999 Mercedes-Benz C230 Kompressor 2.3L MIL Lamp on, hard start VIN: WDBHA24GXX
Well, my customer has not returnedI suspect residual oil in the intake system. I would like to get a chance to check those orifices in the valve cover, that seems likely due to the age and mileage of the vehicle. Thank you to everyone who took the time to resp... Trouble codes: P0100 (Hot Film Mass Airflow Sensor Bank2/5), P0170 (Self Adaptation at Limit), P0243 (A/F Switch Over Actuator F Compressor M16/7).
2005 Mercedes-Benz E320 CDI 3.2L No Start VIN: WDBUF26J15
Thank you to all that replied. After checking the tsb for this situation we decided to install a new rail which came with a new pressure sensor and regulator. Unfortunetly this did not resolve our issue and we had the same pressure readings as before, so we in... Trouble codes: 2047 (Rail pressure monitoring via volume control valve-Rail pressure too low), 2051 (Rail pressure monitoring via pressure control valve-Maximum rail pressure exceeded).
2005 Mercedes-Benz SLK350 3.5L compressor signal VIN: WDBWK56F75
I replaced the front SAM unit and compressor works fine. Thanks for the help, just wanted to make sure I wasn't missing something before replacing a $550 SAM unit. Thanks again for the help.
2008 Mercury Milan Premier 2.3L Evaporator VIN: 3MEHM08Z18
The customer came and got his car. He said he will drive it and gather a little more info on when it does it. But to thoughs of you that thought adding a little extra freon to bring the low side up it just make the high side go up & the low side stayed @ 20 ps...
2007 Mini Cooper 1.6L MIL Lamp on VIN: WMWMF33537
Oddly symtem and code has went away, ordered new thermostat and have schedule customer back in. Thanks David Trouble codes: E225 (MAP Thermostatic).
2007 Nissan Titan XE 5.6L engine VIN: 1N6AA06BX7
thanks for the ideas guys, fought a little and won today. it's absolutely possible to r+r the engine with cats attached. using the engine leveller so the front of the engine is at it's highest point. and removing both motor mount completely. mitchell says to r...
2004 Pontiac Grand Am SE1 3.4L Poor Idle Quality VIN: 1G2NF52EX4
Car has been running normal for three weeks now. Replaced engine computer, and returned car to customer. Talked with her today and she says everything is good. The TP percentage is a calculation the ECM makes based on TP voltage. At .64 volts the ECM should ha...
1998 Saab 900 S 2.3L Computer VIN: YS3DD78B6W
2001 Volkswagen Beetle GLS 1.9L engine VIN: 3VWCP21C61
Had to adjust IQ manually at the pump set to 5.0 car idles and runs great thanks for all of the help.
1999 Volvo C70 2.4L Power seat function VIN: YV1NC56D4X
Thank you all who replied. You were right. Bad return spring on micro switch. All is well now.
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