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Prev Professional Automotive Repair Technical Discussions for March 29, 2013
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1993 BMW 318i 1.8L mixture formation VIN: WBACA42000
eng starts ,runs normal,when acelerating from rest under full throttle sticks in 3rd gear will go into 4th after driving a few kilometers at normal throttle,then pull up to idle engine surges badly then will cut out,wait a few moments then restart all okay til...
2005 BMW Z4 2.5i 2.5L Airbag light VIN: WBABT32050
Hi, This vehicle has a permanent air bag light on with a stored DTC of 98F6. The seat occupancy sensor (apparently a common fault) has been fitted with a new plug in occupancy simulator but has not cured the problem. After clearing the codes the airbag warning...
1995 Buick Riviera 3.8L Poor Idle Quality, Misfire VIN: 1G4GD22K3S
Vehicle came into the shop running very rough at idle. We hooked up scan tool and found the the stft 182 counts and ltft 149 counts with an o2 sensor reading of 13 MV. Idle smooths when propane is added to air stream and fuel trims come down with o2 reading in... Trouble codes: P0740, P0171, P0131
2007 Cadillac DTS L 4.6L Air Ride Level VIN: 1GEEH06Y67
This Caddi is a funeral coach - the air ride suspension is only on the rear & we do not have a wiring diagram that shows the air pressure sensor circuit in it. this car will cycle the air out of the rear when car is shut off. it will not raise the car when sta...
1981 Chevrolet G30 Hi-Cube 5.7L Unknown VIN: 2GBJG31M8B
This van has strange ac issues. It has been converted to R134. It blows cold and works well but can't get the charge right. No matter what charge you put on it it will freeze up or enough charge to not freeze up is to high of pressure on the high side. The sys...
1997 Chevrolet K2500 Suburban LS 7.4L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 3GNGK26J3V
this vehicle came in with a bad engine, spun rod. we rebuilt the engine, on first start up found out the vehicle had been setting for approx. 2 years.replacedc fuel pump, filter, and sock, drained tank and put fresh gas in, during first test drive , vehicle ra... Trouble codes: P0154, P0327
2003 Chevrolet Silverado 1500 5.3L Transfer Case VIN: 2GCEK19TX3
This vehicle came in for no 4WD. Diagnosed that the front axle actuator was not working, replaced actuator. After further diagosing we found the clutches inside of the transfer case were worn. We replaced the transfer case with a rebuilt. Now the pickup will s...
2003 Chevrolet Trailblazer LT 4.2L MIL Lamp on
I'm hoping to solve this issue soon due to smog test coming up So the truck functions fine, it doesn't give me horrible gas mileage neither does it hesitate nor take more than a second t start up, everything functions fine beside the CEL light for p0440 (evap ... Trouble codes: P0440
2005 Chrysler Pacifica Touring 3.5L MIL Lamp on VIN: 2C8GF68415
first issue a critter made a meal out of the knock sensor lead.there is only 8"of lead left from the connector.cannot locate the last 8" of lead or the mounting location.i found the chewed lead under egr valve.r&r time calls for 1.6hrs.thanks in advance. Trouble codes: P0325
2000 Dodge Dakota 4.7L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1B7GG22N1Y
Truck originally came to us from another shop. Vehicle owner brought to their shop running poorly and wouldnt idle with hard dtarting. Was told it had cam codes and a vaccum leak. They fixed vaccum leak and replaced cam sensor with non OE after that they found...
2002 Dodge Ram 1500 Van 3.9L Surge, MIL Lamp on VIN: 2B7HB11X32
This Van is a Work Vehicle and the Customer has delt with this problem for two Months. I Have Checked All Wiring and Voltages, With the ASD Relay Jumped I Have 12 Volts to Heaters and With the DRB III Preformed The Heater Test and Check Voltage on the Signal F... Trouble codes: P0031 (O2 Sensor Heater Low Voltage S11), P0037 (O2 Sensor Heater Low Voltage S12)
2005 Dodge Caravan SXT 3.3L Misfire VIN: 1D4GP45R95
Happy Friday everyone. In my hands I have aa Mini van that every other shop has worked on. It misfires randomly. The misfire counters on my Modis dont pick it up and it wont set a misfire code. I tried unplugging one wire at a time to try and identify a cylind...
2007 Dodge Ram 2500 Truck TRX4 5.9L MIL Lamp on, derates power VIN: 3D7KS28C77
This truck derates and sets a P1222 and illuminates the intake heater light when coasting downhill. Starts and runs fine until code sets. No excessive smoke except for a little black at cold idle after start up. It is my understanding that the fuel limiting va... Trouble codes: P1222 (Injector control circuit performance.)
2007 Dodge Ram 3500 Truck SLT 5.9L Vent Tube VIN: 3D3MX39C77
I have a 2007 dodge ram 3500 with 5.9 diesel engine oil leaking from a vent tube that on the drivers side of block. I've seen a few dodges with the same problem not sure what causing the leak. Please help. Not able to find anything on all data, but its a commo...
1996 Ford F-250 Eddie Bauer 7.3L No Start VIN: 1FTHX26F5T
Thanks in advance to everyone. I have my 96 F-250 7.3 powerstroke. It cranks but does not start i had it plugged it and still no start. i scanned for a code and got P1280 ICP sensor open or short to ground. I replaced the sensor and still no start but the code... Trouble codes: P1280 (ICP sensor)
1998 Ford Mustang GT 4.6L Rear wheel bearings VIN: 1FAFP45X4W
The car has the typical growling noise from the back that bad wheel bearings make so we replaced both with SKF brand bearings, used Mobil 1 75W-140 fluid and a bottle of Motorcraft XL3 additive. Afterwards the same noise is still there. Could the axleshafts be...
2002 Ford E-350 Econoline 5.4L perfonmance VIN: 1FTSS34L22
the vehicle has a misfire under load, approximately at 60 miles per hour. check engine light does not come on. Misfire does not happen all the time. no codes are found. system does not pick up the misfire. when coils and plugs were replaced vehicle ran great, ...
2004 Ford F-350 Super Duty King Ranch 6.0L engine VIN: 1FTWW33P84
Recieved the truck not to long ago with a shreaded water pump and broken belt. The customer said they heard a "pop" (guessing the belt breaking) didnt know what it was but kept driving untill the truck finally died on them about 2 miles later. We replaced the ...
2004 Ford F-150 FX4 5.4L forward drum VIN: 1FTPW14584
Hey guys : I have this 4r70w transmission that have a broken forward drum where the clutch snap ring seats. Truck came in with no reverse we replace the broken reverse band and it ran fine, 3days later it back with no forward disassembly tranny and found forwa...
2008 Ford Focus S 2.0L No Start VIN: 1FAHP34N08
car came in with no start, checked power and ground to transceiver good, replace it still get 1600 most of time 1602 once in a while. got different cluster checked tx/rx wires from transceiver good same issue got a second transceiver, same. powers and grounds ... Trouble codes: B1600, B1602
1993 GMC K2500 Sierra SLX 5.7L Headlights VIN: 1GTGK29K3P
Hey guys, Simple question. This vehicle has the halogen, replaceable bulb (not sealed unit) headlamps. Two per side, rectangular in shape. When on high beams, do all 4 lights come on or only two (which is what it is doing right now). Thanks! Ken.
2000 Honda Passport EX 3.2L fan bearing VIN: 4S6DM58W1Y
I am wondering if anyone has any ideas or has run across anything like this on a passport or rodeo.
2002 Honda CR-V EX 2.4L imrc VIN: JHLRD78832
I repaced the imrc valve and now have code p1077. Is there a certain way this valve needs to be installed?
2002 Honda Civic LX 1.7L No Start VIN: JHMES16552
the p0118 code is the only code showing. when code is cleared, it reappears. tested continuity from chassi ground to ect selonid ground. tested pin 4 & 5 in DLC. 5 grounded but 4 did not. pulled out passenger seat to check ground. Trouble codes: P0118
1999 Infiniti Q45 4.1L No Start VIN: JNKBY31A9X
after testing for a no spark lab scope shows the cam sensor is not giving a clean form. We order a cam sensor from the local dealer and the parts man says better check the magnets on the cams. NOW I am looking for the magnets and I can't find any info about th...
2005 Jeep Liberty Limited 3.7L over head compass instrument panel body modual VIN: 1J4GL58K75
electrical wiz kids, have a jeep liberty here that keeps blowing fuse 13 in inside fuse box. when fuse blows you loose instrument panel over head compass and for some reason the cruise control. jeep still starts and runs when this happens. I have unplugged EVE...
2007 Jeep Liberty Sport 3.7L mil lamp VIN: 1J4GL48K67
Hi Guys This car is running rough. Has p0300 and others. Figuring out what is causing it to misfire is easy. The trouble I'm having is the MIL is not lit with the engine running. The MIL is on with KOEO. No MIL with KOER with codes stored in PCM. It had 4 c... Trouble codes: P0300
1993 Lexus LS400 4.0L trans neutrals out VIN: JT8UF11E2P
A quick one for you Lexus tranny guys. Got this 93 LS400 that was rebuilt by a tranny shop. Once the trans gets hot it will neutral out and not move until it cools down, then it will pull again and shift until it gets hot. They called me in to make sure nothin...
1995 Lincoln Town Car 4.6L Stall VIN: 1LNLM81WXS
This car belongs to my Father-in law, and the issue is so random and intermittent that it's almost impossible to catch. Car dies, at any speed, accelerating, decellerating, cruising, coming to a stop, it can be cold, hot or warm (engine temp), any weather. It ...
2010 Mazda 3 S 2.5L Eps VIN: JM1BL1H58A
Got this from local bodyshop with EPS(steering) light on and Skid Control disable warning on(because of EPS, I'm ASSUMING!!!). Bodyshop put a used EPS assy in RF area. Now the warning lights are on for EPS(steering wheel icon) and DSC icon. Only codes are U014...
2007 Mercury Montego Premier 3.0L Compressor VIN: 1MEHM42127
Intermittently this compressor makes a loud rattling noise for a second or two on engagement and it spits a small amount of refrigerant out of the pressure relief valve on the line assembly. Doesn't do it every time, does it more often after the car has sat fo...
2001 Mitsubishi Montero Sport Limited 3.5L Radiator VIN: JA4LS41R51
This car keeps blowing out radiators, three in four months. Here's the story: Originally came in four months ago after overheat with bad water pump. Tested for head gasket damage, no combustion traces present. Replaced water pump, timing belt, tensioner, pu...
1996 Nissan Quest GXE 3.0L slighly high LTFT VIN: 4N2DN11W1T
Hi Guys, I am trying to set the base timing on this. Alldata says to run at 2000 until warm then snap rev a couple times, then idle for a bit, then shut off, then unplug TPS then restart, then snap rev a few more times, then idle for a bit more, then set ti...
2002 Nissan Pathfinder SE 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: JN8DR09X82
good moring fellow techs got a problem child here 2002 nissan pathfinder 3.5l idle issue ok car came in with a no start no idle issue check engine light on. pulled codes po455 po139 p1147 po158 evap code and o2 sensor codes so i smoked tested the air and eva...
2000 Pontiac Grand Am SE 2.4L cooling system VIN: 1G2NF52T6Y
Hey Hey Ya'll, I gotta think I'm missing something but can't seem to trip over it. This car will overheat at idle consistently. Fans come on low at 219 and will kick to high at 232. Will continue to climb until you shut it off. If you do not shut it down and ...
2004 Pontiac Grand Prix GT2 3.8L Electronic Power Steering VIN: 2G2WS54274
Here is a good one for you GM guys. The vehicle came in the other day complaining of variable assist light on and very tight steering. Power steering pump and rack were both leaking fluid so we recommended replacement which the customer ok'd. After replacing ...
1999 Saturn SW2 1.9L driveability VIN: 1G8ZJ8277X
This saturn showed up no start,found no fuel pressure,replaced pump and filter,starts and runs ok until you turn on headlights then fuel pressure drops to zero and will not run with lights on.Any help would be apperciated
1998 Subaru Legacy Outback 2.5L shift VIN: 4S3BG6851W
hello group, I have this subaru I have installed a motor into. I got the thing on the road and am getting a p0720, temp light flashing 16. when u first take off it seems to stay in first to long, does not matter hot or cold for the first shift after startup, t...
2000 Subaru Outback Limited 2.5L 1-2 shift VIN: 4S3BE6869Y
vehicle came in, new customer. coolant leak and trans, when warm looses all forward movement, but reverse still works. coolant leak was head gaskets. checked for codes, none found. pulled trans pan and found what looked like a gear tooth in the pan, and some s...
2003 Subaru Impreza WRX 2.0L No Start, Misfire, MIL Lamp on VIN: JF1GD29683
This turbo charged Subaru fuel floods at cold startup. Has to sit all night for it to happen, sitting almost all day in the shop starts fine, no issues. In the AM is very hard to start, when it does has misfires and rough run from the fuel. ECT showed 50 degre...
2006 Subaru Outback 2.5i 2.5L Hesitation, Surge VIN: 4S4BP62C76
Loss of power up hill feels kinda like a pluged cat. I droped the exhaust still have the same problem. there are no codes in the pcm and the sensors look ok not sure if anyone hase seen this or has a good direction to go
2007 Subaru Impreza 2.5i 2.5L engine oil VIN: JF1GD61687
Hello all, this is actually my first post so please forgive me if it's screwed up.Well we received this subaru with a blown engine(rod hanging out), proceeded to look for a long block but according to subaru only short blocks available.So we then got the short...
2000 Toyota Celica GT 1.8L MIL Lamp on VIN: JTDDR32T9Y
Hi everyone. Has anyone ran into this before? I know the computer is bad and not regulating the VVT oil control valve properly. The car is coming in soon to address this. My question is I can't get the rpm to change at idle if I manually energize the oil contr... Trouble codes: P1349 (Vvt system fault bank 1)
2002 Toyota 4Runner SR5 3.4L power steering VIN: 3J3HN86R22
Hello, We have this 02 4runner that has a knocking noise. The noise is only after warm-up and only if in any drive gear. Does not have noise in park or neutral. Listening with stethscope, did hear noise at bell housing area. I have experienced broken flex pla...
2003 Volkswagen Passat GLS 1.8L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: WVWPD63B83
we smoked checked the intake system. the new vent valve diaphram was blown again. we replaced the diaphram again and it blew again. i found a collapsed vac hose to evap system. Does anyone know what would cause the vacuum vent valve to keep going bad? are the ... Trouble codes: P1136, P0171, P1111
2009 Volkswagen Jetta TDI 2.0L Compressor VIN: 3VWRL71K49
Customer states he will only get warm air from A/C but after driving for 20 minutes starts working. Checked vent temperatures @ full cold 85 deg. F. Checked A/C for DTC’S no codes stored. Connected pressure gauges found 90 psi. on both high & low side no chang...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2003 Audi A6 Quattro Avant 3.0L sticks VIN: WAUVT54B73
this car is fixed. I was emailed lots of great information, From possible vacuum leak, to possible throttle body to it needs to be taken to dealer. The repair was the floor mats, the cust moved the mats and all is good, Thanks everyone Mark
2004 Audi A6 Quattro 4.2L Right Side Catylist
many thanks to all who replied , using a small 13mm wrench worked best on the bottom 2 nuts , the top nut got with the double extension and swivel combo , did not need to drop cradle there seemed to be enough clearence it was tight coming out but when it got i...
2002 BMW 330xi 3.0L MIL Lamp on VIN: WBAEW53492
thanks to all who replied.i installed a new disa valve.the valve mounting sufaces is silicone impregnated in plastic valve.the valve could have been sealed with rtv and fixed vac.leak as suggested.i assume the valve is original do to the condition of silicone.... Trouble codes: P0174, P0171.
2007 BMW 530xi 3.0L Warning Lights VIN: WBANF73527
Gentleman, The fix for this was the replacement of the ABS/DSC module. It was a can communication problem within the unit. Thank you for your replies. John
2007 Chevrolet Avalanche LTZ 5.3L Misfire VIN: 3GNFK12347
"Closed", see update info. Couldn't duplicate. Might have been sludge in a lifter passage, now clear, working great. Trouble codes: P0300 (multiple cylinder misfire), P0305 (Cylinder 5 misfire), P0171 (lean bank 1), P0175 (rich bank 2).
2007 Chevrolet Impala LS 3.5L No Start, died while driving VIN: 2G1WB58N17
hello everyone. thank you all for the help. the fix was a pcm. voltage dropped wiring on this oil leaking beast and all was ok. there was an excessive amount of doctored up front engine harness wiring. got vehicle running and explained and showed customer the ...
2008 Chevrolet Silverado 1500 WT 5.3L transfer case shift control module VIN: 2GCEK19J78
ok so i sent the truck to the dealer and they replace the tccm and reprogrammed it all good! thay said i must of had a defective one! or i f--- up! any way tk-u all of u for all the help
2005 Chrysler Sebring Limited 2.7L cluster VIN: 1C3EL65R55
thank you again for all the replies on this problem after checking all the power and grounds and anything else you can think of i finaly took gilbert from massachusetts advice and did a battery disconect and walla everything is working. customer was happy and ...
1998 Ford F-150 Lariat 4.6L Misfire VIN: 1FTZX18W5W
I'm Going To Close This For Now. Will Update When It's Finished. I Pulled The Right Valve Cover Because #1 Had No Compression And Found A Rocker Arm Off. I Was Able To Get It Back On Easily. Seems Like The Lifter Wasn't Pumped Up. Anyways, Got Rocker In Place... Trouble codes: P0301 (Cylinder 1 Misfire).
2003 Ford Taurus LX 3.0L control head VIN: 1FAHP56S53
sorry about not posting all the tests and checks, this is a friends car and he is trying to fix this himself. he lost his job and doesn't have a lot of money,we changed the in car temp sensor late last night and now everything is working fine. thanks to everyo...
2004 Ford F-350 Super Duty Harley-Davidson Edition 6.0L hydro boost VIN: 1FTSW31P44
PATRICK YOU"VE WON!!! Thanks to all that played. No signs of any exhaust leaks, swapped bearing hubs and no more noise.Actually, havent fixed it. Customer said leave it like that ! He hasnt been back yet, but ill keep looking for him, because we all know he wi...
1998 Lincoln Mark VIII 4.6L no 4th gear
Put a new direct clutch drum in it. Put it together. I have a air test plate for this trans (highly recommend) the direct drum would not engauge. long story short, found someone had put in a restrictor in the case for the direct drum, the orfice size must have...
2002 Mazda Protege ES 2.0L No Start VIN: JM1BJ22562
We spent a lot of time on this car & it is still not fixed. We checked all of the things we recieved in replies, we removed PCM & checked, no sign of water intrusion or burnouts. Informed customer that everything still points to PCM & there were 2 choices at ...
2005 Mini Cooper 1.6L Signals VIN: WMWRC33425
Thank you group for replies - the vehicle returned on thurs 3-28 for further inspection. I removed the cover for the rain sensor to inspect it and found the 4 wires torn out of it from the recent windshield replacement. Separated the wires & all systems not op...
2000 Pontiac Grand Am SE 2.4L Parking Lights VIN: 1G2NF52TXY
Thank for all of the repl1es and help. Plulled connector C-3 on RH IP junction block and found dead short on B1 brown wire circuit 9 marked IP lamp feed from Clipped wire and put all light bulbs and fuses in. Turned on park lights and still had...
2002 Volkswagen Jetta GLS 2.0L power windows VIN: WVWSB61J02
We are washing our hands of this problem child Jetta. Most of the replies we recieved told us to check the wires in the door jambs. The tech working on the car had checked continuity on the driver's door, and did check the other three. All were ok, no open...
2004 Volkswagen Touareg V8 4.2L battery VIN: WVGCM67L94
Hey everyone, so i got a very mixed collection of info on what the specs should actually be. Seems that .040amp is the most common so if anyone is every in need of the spec i would go with .040. I had a very hard time charging and checking this vehicles batt...
2005 Volkswagen Jetta GLS TDI 1.9L Heater Core VIN: WVWSR61JX5
Thanks for all the replies, quoted job at 7hrs plus O.E parts.
2007 Volkswagen Jetta 2.5 2.5L electronic traction control VIN: 3VWHG71K67
Thanks to those who responded. Robert and Charles were more or less on the right track. Let me back up here to clarify something I neglected to mention. The original customer concern was noise from the front of the vehicle that increased in intensity with spee...
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