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Prev Professional Automotive Repair Technical Discussions for October 24, 2011
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1997 BMW 328i 2.8L Check Engine Liget VIN: WBACD4325V
we got this car from a diff. shop they installed new o2 sensors and mass air sensor, keeps setting same codes so we installed a new oil separator valve, still set the same codes 203,228,227 can see oil in the intake thought our new valve was bad replaced it ag...
1997 Cadillac Eldorado ETC 4.6L Theft VIN: 1G6ET1293V
First off thanks, Car displays on info centre Theft system problem. car will no start. It gives me a exp 34 code. which i cant find info on. It will start and die within 3 secs. The prndl lights are flashing on the cluster. Hvac controls dont work or light up....
2006 Cadillac DTS 4.6L cooling temp VIN: 1G6KD57Y66
Thank you in advance for any help. I got married with this caddy, i took over other tech and became my problem. Im having overheating problems low fan speed starts at 213f and high speed at 230f. After replacing pretty much every single component in this vehic...
2007 Cadillac Escalade 6.2L MIL Lamp on, Reduced power mode VIN: 1GYFK63857
Hello all, I'm having some difficulty with this Escalade. Vehicle will intermittent;y go into "reduced power mode" and set P2101 and P0341. Inspected throttle body, pedal sensor and all wiring. All physically looked OK. Cam sensor RPM on scan tool will become ... Trouble codes: P2101 (Throttle actuator position performance), P0341 (Camshaft position sensor performance)
1999 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W7X
Hllo everyone, thanks in advance, well here i am with this 99 chevy blazer 4.3l a/t that got towed in to my shop with a non starting situation,it cranks over but don't start. Apparently the customer was driving on the hwy about 50 mph when the truck die he sai...
2000 Chevrolet S10 4.3L MIL Lamp on VIN: 1GCDT14WXY
Hey guys, this S-10 came into the shop last week running really bad under a load. It would sputter and backfire and had no power. Another tech in the shop replaced the fuel pump because the pressure was way under spec, and the problem was still there. He then ... Trouble codes: P0171, P0174
2003 Chevrolet Blazer LS 4.3L Radio VIN: 1GNDT13X43
Had a aftermarket alarm system(removed). If you turn the key halfway off the transmission range display turns on. Also noticed the ignition power mode never displays running it is either off or cranking(even when it is not). The transmission and radio light up...
2003 Chevrolet Silverado 2500 HD 6.6L engine smoke VIN: 1GCHK23173
I've got a customer that has a 03 chev. with a 6.6 duramax that smokes bad at idle in drive and smoke goes away around 1800 rpm. In park it doesn't smoke at all. Put it in drive at idle and it will start smoking badly. When the engine is cold, it doesn't smoke... Trouble codes: P0234, P1093 (Fuel Pressure low while power enrichment)
2004 Chevrolet Tahoe Z71 5.3L transfer case VIN: 1GNEK13Z84
Well this truck has me pulling my hairs i just think its something simple that i am missing. The customer brought me the truck that 2wd and 4wd hi lights where both on so i checked the truck the truck was in 2wd raised it on a 4 post lift i was able to switch ...
2005 Chevrolet Silverado 2500 HD 6.0L Misfire VIN: 1GCHK23U95
Hope to find some help...05 chev has single misfire on cyl 5 at idle ,reach 1500-2000 rpm them #1,6,8 start..# 5 and 8 are the most frequent...plugs been checked..coils checked and swapped with no change ..have tried cleaner for injectors and have just finishe... Trouble codes: P0300
2006 Chevrolet Impala LT 3.5L park lights VIN: 2G1WT55K66
looking for park lamp relay,mod says it could be in underhood fuse box or in rs instrument fuse box,dont see it in either spot,taillights dont work,scan bcm says park lamp switch on and relay on.
2007 Chevrolet Silverado 1500 LT 5.3L Hi speed LAN VIN: 1GCEK19J57
Hi for all, thanks for looking and your time and help. this truck had a short in fog lamp which cause a fire( behind the dash exactly light SW)inside the truck,the harnis not avaliable with same option so I repaired it using another harnis all wires repared us...
2007 Chevrolet Impala LT 3.5L No Start, Poor Idle Quality, Hesitation, MIL Lamp on, Tachometer is inop. VIN: 2G1WT58KX7
This vehicle was brought in for the tach. inop, no power, hard start and check engine light. This car will start somewhat easier after its warmed up. Scanner tested and found P0335 and P0336. Followed flow chart and replaced CKP sensor with new GM - no change.... Trouble codes: P0336 (Crankshaft Position CKP Sensor Performance)
1982 Dodge D150 3.7L Surge VIN: 1B7FD14HXE
ok this is a oldie its a dodge slant 6 1/2 ton pickup that surges all the time ideling or50 miles an hr down the road it has electronic fuel control on air cleaner but no wires going to carb i remembered the metiring rods wore and i couldnt find any so i repla...
1999 Dodge Caravan 2.4L No Start VIN: 2B4FP25B3X
Vehicle does not start, timing is in spec, cam to crank timing good, keyways ok, has spark, has injector pulse, shows rpm on scan tool, fuel pressure is in specs, will not start with cam sensor unplugged, compression is #1 0, #2 150lbs, #3 90lbs, 150 wet, #4 1...
2003 Dodge Intrepid SE 2.7L Starting VIN: 2B3HD46RX3
This vehicle came in no start, no crank and the shift indicator not lighting up park or neutral. With a scanner hooked up it showed the same that the dash showed- no park or neutral. I then replaced the trans range sensor (fun job) and have the exact same prob...
2007 Dodge Caravan 3.3L MIL Lamp on VIN: 1D4GP23R37
vechile came back same code, retested system have smoked twice, tested system in three different parts purge to nvld,canister by it self, tank by itself,what i don,t understand is if do bay test always sets po455 large leak,I have pinched line behind canister ... Trouble codes: P0441
1988 Ford F-250 XLT Lariat 7.5L Poor Idle Quality, No Power VIN: 1FTHF26G9J
Heres one for the books!!! Customer has this 1988 truck. The original engine used a lot of engine oil but ran real good. He buys a used '92 engine but the same 7.5L. Puts it in and it starts up and runs for about 30 min. and quits. Won't start up again. Takes ... Trouble codes: 23 (TP/FIPL sensor out of range), 34 (EGR EVP closed valve signal too high)
1995 Ford Mustang 3.8L Hesitation VIN: 1FALP4049S
Ok guys, here is my technical question of the day. 1995 Ford Mustang 3.8L V-6 we have installed a used engine and had to transfer over the camshaft synchronizer. The factory Ford manual says to install the sensor with the proper alignment tool at 26 degrees ...
1998 Ford Ranger XL 3.0L No Start, Stall VIN: 1FTYR1OU8W
vehicle cranks and starts for app 1 second and stalls like a gm with an antitheft problem.will do that everytime.fuel press is 60 psi.tried a module because I had one.unpluged module and cranked and have a steady rpm sig.pushed clutch and held to crank after i...
2001 Ford Windstar SE 3.8L Misfire VIN: 2FMZA52421
we have an 01 windstar with a #4 misfire under load runs ok until you load it we swapped injectors #4 with#6 miss stays at cyl #4 no coolant loss did all intake gaskets Is there an issue with spark under load? (computer) we pulled valve cover no problem there ... Trouble codes: P0304
2002 Ford Taurus SE 2-Valve 3.0L trans shift solenoid VIN: 1FAFP55U22
Vehicle came in with MIL on & Trans light flashing but seesm to run fine! scanned & found 10 DTCs! I feel like electrical problem(loss of power or ground) but dont know where to begin. All tests in shopkey say if other codes present fix first!!! Any common pro...
2003 Ford Taurus SE 3.0L Battery Light ON VIN: 1FAFP59S43
Customer came in with an intermittent no start. When we got the vehicle it was a start and stall issue. At times the vehicle would start and the battery light was off. Other times the vehicle would start and stall and other times is would start and continue ru...
2004 Ford F-150 XL 4.6L Reverse VIN: 2FTRX18W44
2004 4r70w customer said he put it in reverse and heard a "pop" noise. now no reverse. goes into drive fine, but did not road test due to no reverse, but the customer did drive it here but didn't mention any other problems. put air test plate in place of valve...
2007 Ford Explorer XLT 4.0L Poor Idle Quality, Misfire VIN: 1FMEU73E17
Good Morning, I have an '07 ford explorer with a 4.0 sohc engine. The truck came in with a rough idle complaint, off idle engine runs smooth. It has 2 codes P0316 & P0304 . I have swapped things around to try to move misfire but no luck. Performed compression ... Trouble codes: P0316, P0304
2008 Ford E-150 XLT 5.4L Temp. Fuel Gauges Out Of Sync. VIN: 1FTPW14V48
Customer just purch.vehicle came in with temp and oil press. Gauges wrapped around not in sync with panel writing.the gauges appear to be working.other issue is back up camera comes on for arond 3 secs.when put in r with no pic. Then goes out. Same with alarm ...
2008 Ford E-150 4.6L Instrument Cluster VIN: 1FTNE14W88
Van towed in for no start, cluster doesn't work accept for illumination and battery light when key is on.pcm won't allow starter to operate also has code p1260 passive anti-theft in pcm,don't think van has pats. Pcm will communicate as well as abs,airbag,secur...
2001 GMC Yukon SLT 5.3L Noise VIN: 1GKEK13T01
Okay guys, this one is driving me crazy! Ive got this Yukon that makes an intermittant buzzing noise from the fuel pressure regulator. The vehicle originally came in with the complaint of low idle and rough running. Another tech here at the shop diagnosed it a...
2005 GMC W4500 Forward W4S042 5.2L Surge, Lack of power VIN: JHDC4J1645
Don't have much experience on these Isuzu diesels. This truck had the original air and fuel filters. The complaint was lack of power climbing hills and a surge at cruise. I checked for codes none found. Low speeds around town no problem, above 40 mph start to ...
2005 Infiniti G35 X 3.5L Mechanical VIN: JNKCV51F75
Picked up this G35 from customer pretty abused. Trying to put it back together. Have a noise on startup sounds like timing chain. I am thinking it has a bad tensioner. It is quiet after startup. Just wondering if anybody has done one and if the primary chain t...
1997 Isuzu N NPR 5.7L Wipers & T.Signals VIN: 4KLB4B1R8V
Engine will not start unless signal and wiper levers are moved around. Lights in dash on but dim. If I attempt to crank engine, then disconnect LCS connectors, the bed lights will stay on until the L. headlamp fuse is removed. At that point the engine will fir...
1989 Jaguar XJS 5.3L No Start, Stall VIN: SALTY5846K
The engine starts fine at times, runs ok until hot, then stalls out. Restarts fine, runs for awhile and stalls again. Other times, it starts and loads up right away with fuel, fouls out spark plugs. It will not restart until plugs are cleaned (we have changed ...
1998 Jeep Wrangler Sport 4.0L No Start VIN: 1J4FY19S2W
I have been working on this one for 1 week and have nailed down a couple of issues. First I have no spark. Second I have a 35-40 ohms on the ground wire coming out of my PCM for my Cam, Crank, Temp, Air temp, TPS, Cruse, O2s, and fuel pump module. I have cut t...
2002 Jeep Liberty Limited 3.7L Poor Idle Quality, Hesitation, Poor Fuel Economy VIN: 1J4GL58K32
After reinstalling head restarted vehicle and it still running very rough compression now good (150psi) @ all cylinders after futher diagnoises found no ground signal to coils #1,3,and 5 . then checked wiring between pcm and coils ,good continuity between them...
2004 Kia Rio 1.6L Hesitation, MIL Lamp on VIN: 1FMZU72K15
Hello kia techs i have 1 that is stumping me .this kia will drive normal if you clear the pcm and start over after driving for 10 minutes the rear 02 sensor starts climbing to .8 and stays there the front looks normal but my fuel trims start heading for the ne... Trouble codes: P0172 (Rich)
1998 Land Rover Range Rover SE 4.0L No Start VIN: SALPV1240W
vehicle is a cranking no start.engine is flooded. spark is ok compression ok injector pulse seems to be pulsing at twice the rate of spark. very fast just for cranking.all injectors seem the same.fuel pressure at 35psi.any ideas?replaced spark plugs. plugs get...
2003 Lexus ES300 3.0L poor/no shift quality VIN: JTHBF30G63
car came in with p0746 shift solenoid a, ohm checked solenoid and found bad replaced solenoid and found same issue, replaced transmission and found same issue doesn't seem as though car has 1,3, or 5th gear. can't be certain if it is in limp mode with just 2nd...
2006 Lexus LX470 4.7L trans temp light VIN: JTJHTOOWO6
car came in with a trans temp light on in dash . i test and could not get light to come on. i let it cool down and test drove again syill no light. spoke with customer and was told that the transtemp light will come on for a while and then go off. i scanned fo...
2001 Mercedes-Benz C240 2.6L Door locks + lights VIN: WDBRF61J81
After replacing the problematic rear sam do they have to be reprogramed to read properly and what is blocking the COM with all the other modules only have access to Engine and Trany
2001 Mercedes-Benz ml270 2.7L glow plugs VIN: WDC1631132
vehicle has glow plug light on dash all time,the fault is glow output stage overcurrent,fault setting conditions are,flow of current within the glow output stage to high,,possible cause of fault,short circuit in the glow plug circuit,have replaced the glow plu...
2006 Mercedes-Benz S500 4Matic 5.0L Satellite Radio VIN: WDBNG84J56
Hello Members, I have a problem with the satellite radio system on this car. Driving down the road, the radio says acquiring signal very frequently. Even in open areas. I scanned the system and came back with 3 codes. D241 Open circuit between N87/5 and A2/82 ...
2002 Mercury Sable LS 3.0L No Start, Surge, Cuts out VIN: 1MEFM55S42
hello friends, having a repeat failure of oem fuel pumps on this vehicle. 4 pumps mow in less than 1 year. purchased from dealer. pumps become erratic. low pressure, no pressure. car has a module or driver for the fuel pump. any suggestions about repeat failur...
2008 Nissan Altima SL 2.5L Cuts out, Misfire, MIL Lamp on VIN: 1N4AL21E18
Hey guys need help on this one, This nissian come in from a body shop checked codes throwing a p0302 swaped coils and plug still same code. threw a injector in it still nothing checked for spark and all cyinders but #2 have a spark, found 14 volts going to the... Trouble codes: P0302
2004 Pontiac Grand Prix GT1 3.8L No Start VIN: 2G2WP54214
this car will run and idle normally but if you shut it off it will not start and will lose injector pulse and spark. This happens every now and then regardless if hot or cold. Replaced the crank sensor and same problem. Checked the inputs and outputs on ICM an...
1993 Saab 900 Turbo 2.0L Coolant Leak VIN: YS3FD49YX6
This car came to us with the complaint of the coolant reservoir going empty every 2 or 3 days. The car is only driven about 8 miles a day round trip to work. We have pressure tested the cooling system with no leaks found. We added a flourescent dye to the cool...
2002 Saturn L300 3.0L MIL Lamp on VIN: 1G8JW54R02
hi everyone, So I have a saturn L300 with a 3.0, code p0128. I know it needs a thermostat but alldata is a little vague on the replacement procedure,looks like intakes have to come off but my concern is the coolant pipe attached to the t-stat housing does it ... Trouble codes: P0128
1991 Toyota Land Cruiser 4.0L No Start VIN: JT3FJ80W9M
Thanx for any help on this one in advance, If this Landcruiser is cold it will crank over and start and run,,,if it is warmed up to full operating temp it stays running as well. but if we turn it off when it is hot it will crank but it has no spark and will n...
1999 Toyota Camry LE 2.2L Cooling Systems VIN: 4T1BG22KXX
Customer called this morning stating while driving to work blinking MIL white smoke from tail pipe, Temperature guage not yet fully hot (had started vehicle 5 min prior). Got vehicle towed. Found cooling system pressurizing with combustion gasses.My concern is...
2005 Toyota Corolla LE 1.8L Electronic VIN: 1NXBR32E45
hi everyone I need some help with this corrolla.I gor 4 transmiision codes, these codes are for automatic transmiision,however this car has a manual trans.P0974 shift solenoid A contrl circuit high; P0977 shift solenoid B control circuithigh; P2716 Pressure co...
2010 Toyota Hilux 3.0L Intake Sludge VIN: MRODZ22G30
You have to see this to believe that a vehicle with such low mileage could have an intake with so much tar like substance in the system. (I am happy to email pictures of the intake opening, EGR and intake body, which were taken after a BG diesel cleaning induc...
2001 Volkswagen Passat GLS 1.8L Interior Lights VIN: WVWPD63B31
Looking for help in diagnosing interior lights inop. None of the interior light work, including vanity mirrors, glove-box light. Checked all fuses (that I could find). Checked for power at center dome light switch, none present. Un-buried comfort control modul...
2005 Volkswagen Jetta GL 2.0L Mechanical VIN: 3VWRA69M45
Greetings to all just finished putting on a head on this vw jetta 2.0 bbw engine.was towed in last weel because t belt broke and bent the valves.we sent the head to a machine shop to get a valve jod done.we installed head locked the cam up in the rear with too...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2000 Audi A4 Quattro 2.8L MIL Lamp on VIN: WAUDH28D4Y
Upon further testing we found that the ports in the head nearest to the cylinder were clogged with carbon. Per our technical service hotline we attempted to clean the ports with combustion chamber cleaner to decarbonize. This did not work , so we advised the c... Trouble codes: P1423 (AIR injection no flow bank 1).
2003 Audi A4 1.8L revese engagemet VIN: WAVAC48H83
Thanks for all the replies. As it turns out we took the vehicle to our not so friendly Audi dealer. They mated the tcm with the vehicle and also did an updated reflash on the software. This reman trans has a new tcm from factory installed in the unit. Vehicle ...
2003 Audi A4 1.8L Alarm VIN: WAUVC68E63
Thanks for all the replies. Most suggested a failed alarm horn. The customer has not returned with this vehicle, BUT, I ended up calling Identifix and got some good diagnsotic information: Alarm horn uis located behind wheel well shroud in right rear of veh...
2003 BMW M5 5.0L Poor Idle Quality, Surge, Misfire VIN: WBSDE93403
THAK YOU ALL FOR YOUR INPUT. YES I HAD THE O2 SENSOR LEADS CROSSED. ONCE I REVERSED THEM MY STFT WENT TO 0 ON BOTH BANKS. VEHICLE QUIT SURGING AND THE MISFIRES WE3NT AWAY. AGAIN THANK YOU FOR YOUR HELP DAN Trouble codes: P0171 (Alternating from bank to bank during different key cylces), P0175 (Lean on bank 1 rich on bank 2 or rich on bank 1 and lean), P0172 (On bank 2), P0174 (Misfire 0n start up), P0316 (testing and results).
2005 Buick LeSabre Custom 3.8L Sdm VIN: 1G4HP52K55
Finally. I removed the two purple data wires from the connector of the SDM connected them together and had complete communication.Then connected the two wires directly to the SDM and the system would not communicate pulling the system down.Replaced with anothe...
2006 Buick Terraza CX 3.5L cruise control VIN: 5GADV23L66
Sorry folks- We were told by GM dealer that the EBCM was a plug & play- but it had to be reprogrammed- We did that & cruise problems are all fixed- Wierd- Cruise control would still work when the ABS had a trouble code- but would not work with no ABS codes- ...
1983 Chevrolet C70 C7D064 8.2L slow return to idle VIN: 1GBS7D4G5D
I checked the adjustment of the buffer screw, it was ok. At this time the farmer needs to use it, I will probably get the truck back after harvest and dig into it deeper.
2007 Chevrolet Suburban 1500 LS 5.3L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNFK16377
Replaced all DOD lifters and canister shutoff valve. Stabilitrack faults cleared once vehicle was running correctly. Thanks for all the input guys. Trouble codes: P0300 (Random Misfire), P0301 (Cyl 1 Misfire), P0449 (Evap Vent Control Circuit Intermitent), C0561 (ABS Module RAM/ROM Circuit).
2005 Chrysler Town & Country (Van) 3.3L rotors, drums VIN: 1C4GP45R25
ok tried cutting rotors and drums also new calipers hardware etc tie rods ok does not pulsate untill 55 or 60 mph??? also put on new hubs could it be tires out of balance??
2003 Dodge ram 1500 5.7L Cuts out, Stall VIN: 1D7HU118D8
Thanks to all who replied. Robert from Ohio was right on the money. One new ignition coil and a very happy customer.
2004 Dodge Ram 2500 Truck ST 5.9L No Start VIN: 3D7KU28CO4
Found number 2 and number 6 fuel return rates very excessive and bad. replaced injectors and all is well!!
2007 Ford Crown Victoria Police Interceptor 4.6L cigar lighter VIN: 2FAFP71W37
Finally found the correct part #: 5W7Z-13A726-AA. Thanks to all who replied.
2002 Lexus ES300 3.0L cruise inop VIN: JTHBF30G92
Thanks for the replies, guess this was just one of those problems needing a "reboot" (though I can't remember ever doing that to a Jap car). Been fine for days now and I'm calling this fixed. Thanks again, Steve
2003 Lincoln LS 3.0L Misfire VIN: 1LNHM86SX3
well we ran comp. test second time. same readings. cylinder five seems to skip every other comp. stroke.We are not equiped to tear engine apart.Also still concern about comp. since all my test done in stall just cranking.Miss is prominent under load.We recomen... Trouble codes: 352 (coil circut).
2003 Lincoln LS 3.0L Front Suspension VIN: 1LNHM87A92
1992 Mercedes-Benz 400E 4.2L hard start VIN: WDBEA34ENB
Customer satisfied with the repair of poor idle; will live with the extra cranking
2007 Mercedes-Benz CLS550 5.5L Speedometer VIN: WDDDJ72X67
Both members that replied suggested the same course of action, however the vehicle has not returned to the shop. When it does come back I will try what was suggested. Thanks to the members who replied, Rich
2000 Nissan Xterra XE 3.3L Poor Idle Quality, Stall, MIL Lamp on VIN: 5N1ED28Y8Y
This one is fixed. It turned out to be the MAF sensor. The thing I hate is that the data fell within the perameters for the vehicle. Old MAF 4.3- 4.5 g/s New MAF 3.8- 4.2 g/s Hot idle. Not much difference but enough to cause the fuel trims to peg out on the ... Trouble codes: P0131 (O2 circuit low voltage b1s1), P0325 (Knock sensor).
2001 Nissan Sentra CA 1.8L Cuts out VIN: 3N1CB51D61
Thankyou all so much for all the help on understanding how this Maf system works. Im sure this will help me for future repairs. It had corosion in the green wire near MAF conector, but outside of wire insulation looked fine.I was getting 1.4v at idle on green ... Trouble codes: P0100.
2004 Saab 9-5 Aero 2.3L Abs VIN: YS3EH59G94
Thank you to all who replied. We had the right module, same part number as original, and the technician was programming in ESP. What he was not doing was programming for the correct chassis type. The vehicle is an AERO with 17 inch wheels, he had it set as a s...
2000 Volkswagen Golf GTI GLS 1.8L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: WVWGH21J6Y
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