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Prev Professional Automotive Repair Technical Discussions for December 30, 2004
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1991 Audi 200 Quattro 20v Avant 2.2L No Start VIN: WAUHE5440M
Car was towed in with a no-start condition. Tech found it has no spark but fuel pump is running and has fuel pressure. Using test light we found no signal at electronic injection valves. All fuses were checked, OK. Checked the engine rpm and TDC sensors with s...
1996 BMW 328i 2.8L washer pump VIN: WBACD4323T
hello all you bmw gurus. I am not a bmw mechanic as my specialty is gm and ford trucks. my friend bought this car at auction for his wife and the problem it exhibits is the washer pump does not work. I pulled the 2 wire connector off the pump and with the key ...
1997 BMW 528i 2.8L Accessories
When the speed of this car up to 40km/h the voice of radio turn very loud.The screen display :REG OFF. We try to test the radio system with Modic 3 but this tool can not enter radio system so we can not read the code and live data.What should we do?Any input w...
1993 Buick Regal Custom 3.8L Poor Idle Quality, Surge VIN: 2G4WB54L2P
This Buick will intermittantly idle poorly. It has a "rolling" idle or it may be described as a surge at idle. Sometimes it will do it just as the car is started, or it may not occur for 50 miles of driving. We have been chasing it for almost a year on and off...
1995 Chevrolet Corsica 3.1L heater VIN: 1G1LD55M65
heater is not getting hot enough (91 degrees at vent); after repair it worked ok (149 degrees)until a test drive then went back to not working. one of the hoses coming out of the heater core is not as hot as the other, but the flow appears to be good
2000 Chevrolet K3500 7.4L MIL Lamp on VIN: 1GCHK34J6Y
This truck came in with a p0172 and p0175 and also a hard start on a hot soak of about 10 to 20 min. fuel pressure was dropping of slowly. Checked injectors and found four dripping. Replaced all 8 inj with new bosch inj from linder tech also replaced rhe fuel ... Trouble codes: P0172 (Fuel trim system rich bank 1), P0175 (Fuel trim system rich bank 2)
2000 Chevrolet Tahoe 5.7L injector pulse VIN: 1GNEK13R9Y
Hello GM Techs, Tahoe came in yesterday with a hard start in morning. Scanned computer: Code P1626 Theft Deterrent Fuel Enable Signal not Received. When it cranks and no start- injector pulse is at 0. Car will start and run for about 1 second. 10-12 tries it w...
2002 Chevrolet Trailblazer LS 4.2L codes P1633, B1440 VIN: 1GMDT13S42
Hi everyone. This TrailBlazer came in with service soon light, 4x4 light, and ABS light on. The VCM, ATC, BCM, and IPC all had a pile of 'loss of voltage' and communication codes. We replaced the ignition switch which fixed most of it. Were now left with P1633... Trouble codes: P1633, B1440 (Ign 0 voltage loss to BCM)
2002 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEC13Z32
Hi I have this Tahoe in with a check engine light on with a cam sensor error code. I Replaced the sensor because my only diag. tool is my scanner and Alldata and Alldata has very limited info on checking this code. The car does have an extended crank times som... Trouble codes: P0431
1995 Chrysler Cirrus LX 2.5L No Start, Stall VIN: 1C3EJ56H4S
this cirrus starts and immediately dies. disconnect map sensor -no change. it cannot be kept running w/foot on accelerator.all scan data looks normal. no codes are stored. archives has a million cases of coil(distributor) failures, but the symptoms(and the fac...
1996 Chrysler Town & Country 3.8L MIL Lamp on VIN: 1C4GP54L3T
Looking for some direction on this van. Van came in with complaint of check engine light on. Code in system at that time was for cyl #1 missfire. It was in real need of a tune up. At this time I tuned it up & cleaned the injectors with motorvac and cleared cod... Trouble codes: P0300, P0301
2000 Chrysler Sebring LXi 2.5L starter VIN: 4C3AU52N8Y
hello chrysler techs I have a sebring coupe that when the temp gets below 10 degrees F. the starter is inop. The customer had it at the dealer last winter and they installed a new starter to try to fix the no start. That did not fix the problem. I have heard t...
2002 Chrysler 300M 3.5L No Start VIN: 2C3AE66G62
Hi, Chrysler techs, This car blows the S fuse which feeds the IGN coils. Coils all ohm @1 , Same as a known good car . If I disconnect PCM the short goes away. I'm thinking bad PCM, am I missing somthing?
1987 Ford Bronco Custom 5.0L Poor Idle Quality, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy VIN: 1FMDU15N3H
engine runs rough and extremely rich intermitantly cold and warm sometimes will clear oput and idle fine usualy loads up kills and stalls constantly ... breakout box not available.. tested tps volt.098 not above 1.0 volts as specs call for unplugged o2 sensor ...
1994 Ford E-150 Econoline 4.9L Misfire VIN: 1FMEE71Y9R
Greetings to all, Vehicle has an intermittent misfire at idle, cruise and under load. With scope connected to primary side of ignition on raster display I will get extra firing spikes intermittently on different cylinders. I checked duty cycle on pip signal- ...
1996 Ford Explorer Eddie Bauer 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMDU32X1T
Vehicle came in with two complaints: rough idle and check engine lite on. Scanned. Two codes identified. Cylinder 2 misfire. Ckd plugs, like new, but swapped. Swapped like-new wires--still cyl 2 misfire. Compression test on #2, #1 and #5 cyl--all 150 to 155 ps... Trouble codes: P0302, P0401
2001 Ford E-450 Econoline Super Duty Custom 7.3L Lock-up VIN: 1FDXE45F61
Hey guys. I need a little help on this one. The trans. has been working great until a recent highway trip. Customer states O/D cancel switch light started flashing all of a sudden. Pulled off to side of road, shut down, restarted, worked fine for a while, then...
2001 Ford Ranger Edge 4.0L oil pump VIN: 1FTYR14E31
can not find any info for r&i the oil pump does has any one done one have mitchell no help
2002 Ford Crown Victoria 4.6L window wipers VIN: 2FAFP71W93
We have a county police car. They may work for short time correctly as in few minutes. Then they only work at HI speed, there is no low or intermitent. I have replaced the Multi funct switch with updated version, I am having trouble finding the wiper control m...
1992 GMC G3500 Rally 5.7L No Start VIN: 2GTGG35K1N
Will not start cold found loss of injector pulse cold small amounbt of fuel poured into manifold will start. I have three vans of same year and same configuration with same problem. I am lokking to see if there has been a comon problem I have not heard of. All...
1996 GMC Topkick 366CID actuator VIN: 1GDJ7H1P4T
I work on cars primarily but I have a small fleet with 2 of these Topkicks.The problem is the park brake won;t release in below freezing weather.The fluid is getting moisture in it,changing the fluid cures the problem for a while. Does anyone know of a long te...
1999 Jeep Grand Cherokee Limited 4.7L engine VIN: 1J4GW68N5X
I am looking at this Jeep to buy to use as shop vehicle and to tow behind my motor home but have a noise in engine on start up. After about 15 minutes noise is gone. When first started there is a noise coming from the R/F of engine by the front of valve cover ...
2000 Jeep Grand Cherokee Limited 4.7L key will not come out VIN: 1J4GW4853Y
Boss ordered new lock cylinder and key from dealer,leaves town,then i ordered one because key wont come out.Pull lock cylinder out of vehicle everything works fine.Has anyone seen interlock problems w/these jeeps,please help!!!
2001 Jeep Cherokee Sport 4.0L No Start, Misfire, MIL Lamp on VIN: 1JFF48591L
OK,Attention jeep techs, this vehicle arrived at our shop after the customer called requesting price for injector replace (only #3 injector), he had vehicle at another shop and they found code po303 but didnt verify trouble source, reset the light and he took ... Trouble codes: P0300, P0301, P0302, P0303
1979 Lincoln Versailles 5.0L No Start VIN: 9W84F62430
Hello guys,i could use some help on this one. We did some brake work on this car, and then it sat here for a few weeks waiting for customer funds. When the customer came to pick it up it started fine then it stalled. I have done some testing on it ,but i have ...
1988 Mazda RX-7 Turbo 1.3L No Start, Stall VIN: JM1FC3327J
Hi all. Got this vehicle from another repair facility. They installed an engine but could not get it running after it ran for 15 minutes then died. First off found trailing ignition not working. Replaced coil with used coil fronm other shop. Got vehicle to run...
1995 Mercury Cougar XR-7 4.6L Misfire VIN: 1MELM62W5S
Car came in with misfire on #6 cylinder. Remove plug and it was the wrong type of plug and was damp. Used adjustable spark tester and it would jump the 30kv gap. The spark was good and blue. Ran running compression test and had 0 psi. Thought we had a rocker a...
1995 Nissan 200SX SE-R 2.0L Hesitation, Cuts out, Stall, Misfire VIN: 1N4BB42D9S
My sons 1995 Nissian will cut out, miss, and the engine will stop running when ever the engine is taken over 5500 RPM's. As soon as the key is cycled off, to on, the engine will restart and run fine, until he tries to exceed 5500 RPM's again. The optical senso...
2001 Nissan Xterra SE 3.3L Surge VIN: 5N1ED28Y81
The vehicle was brought in with the complaint that sometimes the gauges will fail, the digital odometer goes blank and the engine will loose power/surge similar to having bad fuel. The problems usually occur together BUT not always. When the performance proble... Trouble codes: P0325 (Pending code- Knock Sensor Circuit)
1992 Oldsmobile 88 Royale 3.8L cooling fans VIN: 1G3HY5316N
Fellow techs, Check engine light is on. Retrieved code 15 (coolant temp. sensor low input or circuit problem). Both cooling fans are inop. I unlugged the temp sensor at rear of block and the gauge on instrument cluster stopped registering, so I plugged it ba...
1998 Oldsmobile Bravada 4.3L blend air door VIN: 1GHDT13W2W
vehicle came in with a new controller and actuator installed the temp door will not move from hot to cold position i do not have a tech2 so i have no dtcs or datastream the act. has a 5v ref the mator portion of it has bat+ i can ground the controlside and for...
1997 Pontiac Bonneville SE 3.8L No Start VIN: 1G2HX52K5V
this car floods the spark plugs we pulled the plugs they were soaked with fuel.the inj.pulse m/s is 75.0 we got a used ecm tryed that it didn't help. thanks chuck
1997 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NE52T0V
DO NOT RESPOND TO THIS The vehicle was brought in 5 or 6 times in the spring for a no start situation. Everytime it would fire right up as soon as it was off the hook. Never missed a beat and started everytime at the shop. We tried cleaning the grounds, chang...
2000 Pontiac Grand Am SE 2.4L Excessive Emissions, Poor Idle Quality, Cuts out, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G2NF52T6Y
this has had the light go on and off for 2 years according to the owner, brought it out for smell out air ducts and to check light, it had a po303 # 3 miss fire- i changed plugs and checked ohms hot on the coils, looked for markes on coils and housing, checked... Trouble codes: P0303, P0300
1988 Porsche 911 Carrera 3.2L front brakes VIN: WP0HB0919J
thanks for taking a look here guys. this vehicle is used part time for competition. we have previously replaced brake pads rotors (with cross drilled) and brake hoses (braided stainless) and vehicle has always had good brake performance. vehicle has slowly dev...
1993 Subaru Legacy L 2.2L tach, temp guage, auto seat belts, hvac blower mot VIN: 4S3BC6332P
This Subby pops fuse #15- 10 amp. The only thing the manual show this powers is the Meter,Airbag indicator light. Checked All Data and it also goes to charge light, and maybe all instument cluster. We installed a breaker for about 30 minutes and no problem. Pu...
1996 Subaru Legacy Outback 2.5L Stall, MIL Lamp on VIN: 4S3BG6853T
This car is driving me nuts. When it first came in it had only the Idle Speed code. Which we cleared and checked out the controllor and from something I found in the archives, we replaced the pcv valve, looked pretty bad. Customer tried car and it died on her ... Trouble codes: P0505 (Idle Speed Malfunction), P1501 (Vehicle Speed Sensor Intermittent)
1997 Subaru Legacy LSi 2.5L MIL Lamp on VIN: 4S3BD6859V
Came in for PO136. Scan data showed Ov on sensor,replaced. MIL light came back on. Backprobed ECU found O2 Sensor voltage. Probable internal problem with ECU,replaced. Drove 20 miles ,scan data fine. Suddenly Sensor#2 dropped to Ov again. What I found was when... Trouble codes: P0136
1998 Subaru Legacy Outback 2.5L engine VIN: 4S3BG6854W
this car came in with a vibration at 1300 to 1500 rpm and returns at 2300 to 2800 rpm, we checked all mounts and exhaust system, dealer said timming belt replacement had cured all of the cars that they had seen with this problem. so we replace belt. it was one...
1999 Subaru Legacy L 2.2L shifter interlock VIN: 4S3BD4356X
intermitent problem. customer reports she is unable to move shifter from park without wiggling shifter and ignition key and pumping brake pedal. will not happen in shop. we checked all conections and linkages and customer returned with same problem. anyone see...
2000 Volkswagen Beetle GLS 1.9L No Start VIN: 3VWCF21C6Y
Car came in on a wrecker with loss of power and lots of smoke,restarded drove several miles same problem.When we got the car it would crank but it would not fire we noticed white smoke blowing out tail pipe,checked for dtc none,fuel ok,glow plugs,ok,inake very...
1995 Volvo 850 2.4L MIL Lamp on VIN: YV1LS5514S
good morning, can not get code for knox sensor out of computer. have replaced computer with used unit. it did change which sensor code was set. with original computer it had front sensor code and with used computer it set rear sensor code. has someone had a pr... Trouble codes: 433
1996 Volvo 850 GLT 2.4L cooling system VIN: YV1LW5543T
Car purchased at public auction(yeah,yeah, I know!!) with existing cooling system pressure too high. We replaced head gasket, and had head machined(.009 warp). Engine does NOT overheat, there is NO steam at tailpipe, NO leakage from hose clamps, etc. New press...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1996 Acura RL 3.5L Engine VIN: JH4KA9647T
Well, so much for my theory of balance shaft being off; all marks were dead on. As I was racking the vehicle to pull timing covers and inspect, I remembered a post from the archives regarding the transmission mount being a common problem, AND hard to see. I de...
1999 BMW 323i 2.5L Gearshift Knob VIN: WBAAM334XC
OK...everybody said to huff and puff and PULL the shift knob staight up and off... CAUTION: be sure you are wearing your chin strap cause it will pop like New Years Champagne with it blows!
1992 Chevrolet K2500 Cheyenne 6.5L engine VIN: 1GCGK24FSN
Thanks again for all of the replys. Most dealt with the fact that it had to have basic mechanical problems. The customer picked up the vehicle unrepaired. As of yet no answers to what happened or why. I ran out of time so I have to close this post. I contacted...
1994 Chevrolet Cavalier RS 2.2L No Start VIN: 1G1JC1448R
Thank's to all who repied. The fix was the timing chain tensioner was shot and the timing jumped. Replaced Timing chain, gears and tensioner and the vehicle started. It did smoke alot but let it run until smoke was gone and then replaced spark plugs. All is we...
1997 Chevrolet Venture LS 3.4L Poor Fuel Economy VIN: 1GNDX03E0V
I don't know if we will get the opportunity to try all your suggestions as that decision rests with the customer. Being the holiday season it may not come back in until the new year. If we do get it back in I will post the results of testing. I did however r...
1997 Chevrolet Malibu 3.1L Misfire, MIL Lamp on VIN: 1G1ND52M8V
Thanks to Steve, Roger, Deke, Javier, Charles, Rudy & 2 unsigned Tech's for responding. After rechecking the plugs & wires to make sure they were all good, and confering with the owner, I did another Injector Flush. This seamed to take care of the problem. How... Trouble codes: P0300 (Random misfire).
1998 Chevrolet Express 1500 5.7L MIL Lamp on VIN: 1GBFG15R6W
Thanks for your replys PO 121 has not re occured since 2nd new PCM was replaced.We were not able to get Cat.Monitors to run.Finally got bank 1 monitor to set,however bank 2 converter showed poor efficency.We had previously replaced both converters.Converters w... Trouble codes: P0121.
2000 Chevrolet Silverado 1500 4.8L Poor Idle Quality, Misfire VIN: 2GCEC19V7Y
Well, most of you were right. It was the intake manifold gaskets. It was the one peice manifold so the job went really easy. Thanks to everyone. This system rules!!! Trouble codes: P0300.
2000 Chevrolet S10 2.2L Surge, Misfire, MIL Lamp on VIN: 1GCCS1452Y
Net Techs, First I want to thank all those that offered help on this. I don't know if this fix will help any one or not but here goes. As I mentioned in the original post, only the p0300 would reappear. When I monitored the misfires only #1 was counting up. ... Trouble codes: P0300 (Random miss), P0301, P0201 (inj 1 circuit), P0201 (inj 1 circuit).
2002 Chevrolet Monte Carlo SS 3.8L Door Locks VIN: 2G1WX15K22
sorry for the delay on a post. the costomer has not brought the car back yet. all your replies were great and i thank you for your help.
1998 Dodge Ram 2500 8.0L abs VIN: 1B7KF23W3W
Thank you to the 4 who replied to this great mystery. After many hours of head scratching and poking around I finally came up with some answers. I'll just detail the tests that pointed me in the right direction. I connected an ohmmeter between ground and the...
2001 Dodge Ram 1500 Laramie 3.9L Misfire, MIL Lamp on VIN: 1B7HC16X01
we decarboned this motor, and it is got rid of the cold mis fire, it is been gone for a couple days. thank you for all the help. Trouble codes: 305 (cyl 5 misfire).
1999 Ford F-450 Super Duty Lariat 7.3L No Start, Hard Start VIN: 1FDXF46F1X
Well this truck seems to be fixed.After driving truck and running another self test a camshaft sensor code and exhaust pressure code came up. Due to high failure rate of cam sensor and new information from customer that truck died while driving I replaced sens... Trouble codes: 1690 (0381 -), 0381 (1212 -), 1212 (testing and results).
1998 GMC Safari SLE 4.3L Poor Fuel Economy VIN: 1GKEL19W4W
Nine replies overnite: Wow and thanks. Most replies suggest spark plug access thru the wheel wells, a couple suggest accessing rear plugs from the doghouse. Yes, we did use a large assortment of sockets, extensions & wrenches to access all. Additional thanks t...
2001 Honda Accord EX 2.3L Unknown VIN: 1HGC56691A
Hi All, I checked a TSB that Sean [...] recommended and it states that there are issues with the bearing races breaking down and sending material through out the trans. t.s.b. #02-062. The transmission is covered under an extended warranty for 5 years 100k m...
1994 Isuzu Trooper LS 3.2L code 37 VIN: JACDJ58W7R
thank all you guys who took the time to read my request and those who responded well you are lifesavers all three were right on the money with a bad ground it was the one near the starter it is attached to a splashsheild and had become corroded cleaned it and ...
1999 Isuzu Trooper S 3.5L 4 wheel drive indicator VIN: JACDJ58X8X
After testing several items, we found the upper vacuum solenoid valve that controls the front shift fork in the front axle to be defective. Replacing both solenoid valves, as that is how they are sold from the dealer, fixed the problem. Apparently this was a p...
2000 Land Rover Range Rover HSE 4.6L Electronic VIN: SALPV1649Y
Well this is a strange one Iwould like to thank every one who gave us the info for these rovers.The fix is the mass air flow sensor.Why we get a code for trans 3rd gear ratio is english to me .When i get these rovers back I will get back to fixing them and wil...
1991 Lexus ES250 2.5L Hesitation, Cuts out, Stall VIN: JT8VV22T6M
jumped fp and b+ connector in diagnostic plug and fuel pressure held- the open circuit relay under dash cured it- thanks a MILLION to you'all chuck
1995 Lincoln Town Car 4.6L battery
Key out switch is attached to the Clock Spring Assy. Replaced Clock Spring. Light Module was not seeing KEY OUT and turning off accessories. Thanks to all that assisted
1992 Mercedes-Benz 190E 2.3 2.3L compresion VIN: WDBDA28DXN
Here is what happened, for some reason unknown to me (after 20+years on Mercedes) the lifters stayed open just enough to keep two of the valves slightly open, a couple of the lifters had to be replaced the rest cleaned up and worked correctly. Thanks to the ma...
1994 Mercedes-Benz SL320 3.2L Radio VIN: 1290611223
This customer went out of town so I haven't got the car back. I bought some removal keys from the dealer that look beefier than the ones we were using. From the replies I recieved, there doesn't look like there's much hope of easily getting the radio out witho...
2000 Pontiac Montana 3.4L wobble VIN: 1GMDX03E5Y
Most of the responses thought it would be bad motor mounts or cv axles. All the mounts we're fine,so we put both axle shafts in and that took care of the problem. thanks
1999 Suzuki Grand Vitara JS 2.5L MIL Lamp on VIN: KFQ543R656
I sent the lady to Suzuki for cat replacement under emission warranty- O2 readings indicated no cat activity on the left bank. The 2.5 uses two cats, one attached to each exhaust manifold and a secondary downstream cat. I was plexed as to how some responded th... Trouble codes: 0420 (Catalyst system efficiency below threshhold).
1987 Toyota Camry DLX 2.0L removal VIN: JT2SV22J7J
since i already started work on the car before i asked for help i was hoping for a quick response. so i just went ahead with the removal as planed and removed trans with engine in the car it was hard! but i used a come-along to pull the engine to the front of ...
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