Automotive Technicians Technical Discussion and Fixes for Dec 29, 2006

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	Help Request	Answers
	1997 BMW 750iL 5.4L Stall VIN: WBAGK232XV Problem did not exist before tank repair. Customer states that the fuel gauge seems accurate, however, at 1/2 tank the vehicle runs out of fuel. When customer tops up fuel, gauge reads full and will run strong until runs out at 1/2 tank again. I have obtained ...	View
	1994 Buick LeSabre Custom 3.8L No Start VIN: 1G48P52L4R Happy New Year to all. I could sure use some help on this car. It will fire up then drop dead after about two seconds.Acts like a VATS problem. There's no injector pulse after it dies. There is good spark. Turn the key off then it will restart and drop dead th...	View
	2000 Buick LeSabre Limited 3.8L no 4th gear VIN: 1G4HR54K3Y Vehicle just won't go into 4th gear.	View
	2001 Cadillac DeVille 4.6L Poor Idle Quality VIN: 1GEEH90Y71 Vehicle idles high sometimes, sometimes idle will drop off and car will stall. code P0507 stored but has not come back.Vehicle RPM @ 1100, desired rpm 1000, vehicle spec @650.When commanding idle with Tech 2 willdrop down to 500, but IAC count never drops belo... Trouble codes: P0507 (Idle System High)	View
	2007 Cadillac escalade 6.0L tpms VIN: WE56TR6798 I have a 2007 escalade I need some information about the tire pressure monitoring system. this truck lost 3 wheels in a wreck and wheels and senors and tire have been replaced. I need to know how to program the replaced sensors. I have tried after entering lea...	View
	1968 Chevrolet Camero 454CID Engine I.D. VIN: 124378L842 Hi Gentlemen, Just tring to identify this Chevy BB casting # [...]. Thanks, Sam	View
	1990 Chevrolet Corvette 5.7L Misfire VIN: 1G1YY238XL Hello all, I have a 1990 corvette that has 3 dead cylinders at all times, #5,6,7 CYLINDERS. Have scope tested igntion and even replaced all igniton components except internal distributor parts, have tested compression-good, have scope tested injector pattern...	View
	1994 Chevrolet Astro 4.3L No Start, hard start This vehicle came in with a no start condition. We found good fuel pressure and wet plugs. Coil wire was faulty. We replace plugs, wires, cap and rotor. We also checked for a leaking injector. We removed the intake manifold tuning valve and looked in with a bo...	View
	1996 Chevrolet K1500 Cheyenne 5.7L No Start VIN: 2GCEK19R3T Hello out there and happy new year! Please help us!! Customer phoned with no start condition - mid Dec, I went on a road call and vehicle started (after a few tries) and I drove it to the shop. It started up fine for the next couple of days, then it did it aga...	View
	2002 Chevrolet S10 4.3L drive shaft VIN: 1GCCS19W82 Vehicle has a vibration at about 20, 40 and 55 mph accompanied by a noise. Replaced drive shaft w/aftermarket built drive shaft. This unit was made with a single u-joint on each end instead of cv joint. Noise and vibration is a lot better but still present. An...	View
	2003 Chevrolet S10 4.3L Timing chain VIN: 1GCCS19X53 Customer came in with noisy motor under load. First suspected Idler pulley but after replacing, noise still there. Removed serpentine belt to disconnect all accessories and under brake load, noise is still there and predominant around the timing chain. Wonder...	View
	2005 Chevrolet Trailblazer LS 4.2L engine tick VIN: 1GNDT13S55 Hello everyone, I have this Trailblazer with a 4.2L engine that has what I believe to be a valve train ticking noise. When it came in the coolant in the overflow was down so I thought there could possibly be antifreeze in the oil. Drained and pressure checked ...	View
	2004 Chrysler Intrepid 3.5L No Start VIN: 2C3HH56M44 Hey guys, This one would not start the day after Christmas, towed in. Plugs were fuel fouled, flooded. Scanned for codes, none found. RPM signal present on scanner, no trouble seen with anti-theft system, no spark present on coils. Occasionally the engine will...	View
	2002 Daewoo Lanos S 1.6L MIL Lamp on VIN: KLATA22612 Hello fellow techs! I was blessed with this boat anchor. customer had some work done recently somewere, and ever since her MIL light has been on. i pulled the codes through global obd2 with my snappy mt2500 (the only way i can) and got p1336 58x crank relearn ... Trouble codes: P1336, P0420	View
	1998 Dodge Ram 2500 5.9L convertor VIN: 3B7KF22D1W out of logical ideas!! help please!! this vehicle came in with the tcc not holding under load. the transmission was overhauled with a new torque converter and all the sonnex valves and new electrical. same problem, the transmission works perfect until you gi...	View
	2000 Dodge Intrepid 2.7L Stall VIN: 2B3HD46R2Y We have checked all the basics on this vehicle and i have no idea where to go from here. we replaced cam sensor with factory part, when vehicle stalls rpms drop to zero and engine shuts down. this will happen every fifth or sixth time you take for a test drive...	View
	2005 Dodge Magnum SXT 3.5L Steering VIN: 2DFGZ48V25 Hello, we have this Magnum that wanders severly. On smooth roads it drives great...no pull or wander. However, when on roads that have any crown, it will dart hard one side or the other. If your not watching close, it will dart to the curb hard, then you corre...	View
	1991 Ford Ranger 2.9L valves/ lifters/ rockers we have a 91 ranger in which the customer had removed the engine for whatever reason and never reinstalled one .we purchased a wrecked ranger so as we would have a complete unit to replace the missing engine with. due to the collision damage it was not possibl...	View
	1995 Ford F-350 XL 7.3L leak VIN: 1FTJW36F4S hey guys see if you can help me with this one. i have a friend that has a powerstroke that warps the lid for the fuel filter on one side only, enough to cause it to begin leaking. happens between two to six months. can not see any melting on cap or anything an...	View
	1997 Ford F-150 Lariat 4.6L Misfire VIN: 1FTDX18W8V THANKS TO ALL THE experianced FORD TECH'S DRIVABILITY IS CRUMMY ! ONE THING IS OUT OF PLACE THERE IS A ARCHING SOUND FROM CYLD # 7 ?? IF I REMOVE PLUG WIRE FROM SPARK PLUG ARCHIN NOISE GOES AWAY, IF I PLACE A SPARE PULG INTO WIRE AND WILE ENGINE RUNNING GROUND... Trouble codes: P1000	View
	1997 Ford Probe 2.0L Hesitation, Surge, Stall VIN: 1ZVLT20A8V i recieved this job after an aftermarket shop installed a 96 motor in this 97. it wouldn't start. if you held your foot on the throttle it would start but would die after you took your foot off the throttle. tested and found that the iac valve was siezed and f...	View
	2001 Ford F-150 King Ranch 5.4L oil pressure VIN: 1FTRW08L21 Greetings Ford Guru's. This 5.4L came in about 4 weeks ago with an on again/off again oil pressure light. We prudently checked the actual pressure with a mechanical gauge and found it to be about 18 psi at hot idle and about 55 psi at highway speeds. We've see...	View
	2003 Ford E-250 4.2L Poor Fuel Economy, MIL Lamp on VIN: 1FTNS24253 After performing the TSB described above the van was good for aprox. 350 miles. Then the MIL came back on with all the same codes excluding the p0300 misfire code. I performed this TSB with care, properly tourging bolts in sequence and cleaning sufaces perfect... Trouble codes: P0300, P0171, P0174, P1131, P1151	View
	2003 Ford Taurus SE 3.0L No Start, Stall, no door power locks VIN: 1FAHP53U73 This vehicle will die while driving down the road or at idle, Won't crank at times and rapid clicking heard. If brake pedal is depressed,clicking stops and engine will crank and start. Also when clicking is heard the remote power door locks won,t work until br...	View
	2003 Ford Crown Victoria 4.6L 1/2 shift VIN: 2FAFP71WX3 Recently, car developed a 1-2 shift and a 2-3 shift, which the customer calls a "hard shift." You could also call it a shudder, it seems to be lugging the engine down. It doesn't do it all the time, but when it does, both the 1-2 shift will be hard and the 2-3...	View
	1998 GMC K1500 Sierra SL 5.0L No Start VIN: 1GCEK19M4W Towed in, no start. Checked fuel pressure, 60 lb, marginal. Installed motor vac with shop fuel, adjusted fuel pressure to 64 lb. Checked for injector leak down, marginal for #7 at first but detergeant must have cleaned it and it now seals. Plugs were soaked, c...	View
	2001 Honda Civic LX 1.7L No Start, Cuts out, Stall, MIL Lamp on VIN: JHMES15551 Vehicle came to us for maint and check eng light on, pulled codes w Mastertech, had coolant temp malfunction and temp gauge didn't register. Did 90k w/t belt, cust needed car and would return for further diag. Cust gone 2 days, called complaining of engine run...	View
	1993 Jeep Cherokee Sport 4.0L No Start VIN: 1J4FJ68S7P Guys please help me on this one. I'm pulling my hair out. @130,000 Miles vehicle had a no start. Replaced coil and was fixed. Car returned yesterday on the hook. Cranks but won't start. Customer said he was driving and it just quit on him. Checked spark fro...	View
	2002 Jeep Grand Cherokee Overland 4.7L right side air blend door VIN: 1J8GW68JSZ I quess I could have a faulty control unit but probably not.I am helping out a friend and he pulled a code that said faulty contoller.So he replaced it with no change .Possibly a relearn may be needed?Drivers side ATC works fine .This is a dual zone system.Rig...	View
	1991 Mazda B2200 2.2L check engine li VIN: JM2UF1130M My mazda just hit 200,000 miles and the check engine light just came on, the engine has no problems does anyone know how to turn it off or reset the computer, I have a scanner but the truck is too old to have a connector can anyone help?	View
	2001 Mazda 626 ES 2.5L rear end VIN: 1YVGF22D61 would appreciate any help from mazda techs. knocking noise from rear suspension over speed bumps or wash board type roads.	View
	1999 Mercedes-Benz E320 3.2L Unknown VIN: WDBJF65H9X I have this MB E320 sedan that has no other driveability issuse except the MIL is on. With my scan tool I have gotten the MB codes 120, 121,and 135 for the transmission. I'm not a transmission guy but was wondering if this is a computer problem and not really ...	View
	2000 Mitsubishi Eclipse GT 3.0L alternator VIN: 4A3AC54L6Y This 2000 Eclipse is not charging. When cranked, battery light goes out. However, battery voltage starts to go down until the battery and brake lights starts flashing on the dash. What are the different voltage requirements at the alternator ? According to the...	View
	1988 Nissan Sentra 1.6L No Start VIN: JNIPB22S4J Well guys this one is nuts. The car was running just fine one day and the next day it wouldn't start. Thats when all the strange stuff started happening. The lights on the ecm won't lite up, the relays click on and off randomly, spark shoots out of the coil wi...	View
	1995 Nissan 200SX 1.6L engine VIN: 1N4AB42D9S Hello all you good Nissan fellows. I hope you all had a good X-mas. Car came in on our hook, no start. Cranks good. So I go through the normal steps visual look over, I find the distributor hold down loose, sweet... but no would not fire... Check fuel psi, 4...	View
	2002 Nissan Pathfinder SE 3.5L fuel tank VIN: JN8DR09Y62 vehicle initially came in with service engine light and customer complaint of vehicle will not take in fuel when filling. verified both complaints. engine light found being evap vent control valve(leaking) replaced fuel tank for complaint of unable to fill tan...	View
	1999 Oldsmobile Alero GLS 3.4L Long crank time VIN: 1G3NF52E9X HELP PLEASE This one has me realy wondering when this eng is cold and you try and start the car it will crank and crank it may buck a little and then it will start and idal and run fine it has set no codes in any mudule now this is where I get confused I have ...	View
	1991 Saturn SC 1.9L No Start VIN: 1FTWW33F93 I'll apologize ahead of time for the basic post, guys, but I have talked to all the techs I know personally and NO ONE has ever replaced the fuel pump on a Saturn. Why is this? Are these pumps that good? Anyways, I'm doing a friend a favor by replacing his f...	View
	1996 Saturn SL1 1.9L Cuts out VIN: 1G8ZG5285T This vehicle arrived barely running with a po336 crank sensor code stored. Lab scoped sensor on purple and yellow wires both erratic, replaced sensor. Now vehicle starts and runs normally to 2700rpm at which point it acts like a rev limiter kicks in also tach ... Trouble codes: 336 (crank position sensor performance)	View
	2003 Saturn Vue 2.2L Poor Fuel Economy, MIL Lamp on VIN: 5GZCZ23D23 Vehicle came in with p0172 and a complaint about poor gas mileage. We found a vacuum leak at the intake manifold cyl#1. After repairing the leak a smaller vacuum leak was also found at the injector o-rings. Now at idle the fuel trims all stay normal and even a... Trouble codes: P0172 (fuel trim rich condition)	View
	2003 Saturn Ion-1 2.2L No Start VIN: 1G8A152F73 hi customer stated this car ran fine no ck engine light no symptoms, went to start car in driveway and had no start condition, no codes stored, scanned sensors iat and ect read -40 degrees, iac reads 192333 lt fuel trim -81 5 volt reference at iac tps map iat ...	View
	1990 Toyota 4Runner SR5 3.0L MIL Lamp on VIN: JT3VN39W3L this 4runner was brought in for check engine light coming on with code 52 (knock sensor). the owner replaced his own engine, knock sensor, and pigtail harness. during testing i found there is alot of noise on this circuit. while checking grounds and wiring i f... Trouble codes: 52 (knock sensor), 22 (water temp open or short)	View
	2000 Toyota Sienna LE 3.0L MIL Lamp on VIN: 4T3ZF13C9Y P1130 Code Trouble codes: P1130 (O2 Sensor Bank 1 - Sensor 1)	View
	2006 Toyota Prado 3.0L electrical This car was driven by owner and parket at his home garage. After a 15 minutes the car got fire by the engine compartment near the battery and the fuse block. Any idea of what can cause this. This is a turbo diesel engine electronic controlled. All battery ter...	View
	1986 Volvo 740 GLE 2.3L Excessive Emissions, Poor Idle Quality VIN: YV1FX8850G This car came in with a rough idle concern. I have checked the somewhat limited info in Alldata and have followed the test prodecure to determine that the MAF, throttle switches, coolant temp sensor, ECU grounds, fuel injection relay all are within the specs l...	View
	2000 Volvo V70 R AWD 2.3L transfer case/ angle gear VIN: YV1LV60D6Y Good day gentlement, I've run into some bad luck with this vehicle and it is totally eating my lunch. About a year ago I installed a used angle gear(volvo calls it that) in this car (transfer case). On this most recent visit while test driving the car, we hit ...	View
	2004 Volvo XC90 T6 2.9L atf VIN: YV1CZ91H64 This unit is blowing out ATF under highway conditions, I believe. Nothing leaks out when run stationary. It broadcasts the fluid so I can't tell where it's coming from other than somewhere in the lower right or rear quadrant. It's not coming out of the window ...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1997 Audi A4 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAUBB88D7V Thank you for all of your replies. Here is what we found. The intake cam timing was off a tooth. The plastic chain guides were worn out. Customer did say oil light had been coming on. Looks like we have a oiling problem. We need to replace oil pump, timing cha... Trouble codes: P1338 (Bank 1 Camshaft position Sensor Open circuit/short to ground.).	8
	1996 Buick Roadmaster Collector's Edition 5.7L Level Control VIN: 1G4BT52P7T On this particular vehicle, the customer only noticed the compressor running when it had a lot of weight in it. When removing the weight, he never noticed it. We found a leak in an air line repair fitting, that only leaked under higher pressure. After repairin...	6
	2002 Buick LeSabre Custom 3.8L door locks, cig lighter, garage opener, courtesy l VIN: 1G4HP54K82 Well This one went to the dealer after some checking... turns out there was a ground issue witch was the only thing left that made since but I had no luck finding out which ground was at falt...	5
	2002 Buick LeSabre Custom 3.8L column VIN: 1G4HP54K32 Thanks Chuck and John, greasing the Steering gear upper seal was the cure. Thanks for all the help.	7
	1996 Chevrolet K1500 Cheyenne 5.7L No Start, Misfire VIN: 2GCEK19RXT Thanks to Gary from Az. & David from Wisc.The dist.drive gear was stripped.I'm curious as to how long it took y'all to find this? After looking at the replies I removed the cap and turned the cap& dist.cap back and twisted harder to find the dist.would finally...	15
	2001 Chevrolet Monte Carlo LS 3.4L cooling fans just a quick thank to all that replied. Sorry it taken a while to post a close i was out on an injury and just returned to work. This vehicle turned out to have a shorted ecm causing the high speed fan to not come on. Programed new comp and installed and fans ...	4
	2001 Chevrolet Silverado 1500 5.3L hard start VIN: 1GCEK19T91 Thank you all for your advice. Found it hard to believe, but we had a defective ac delco fuel pump. We had a hard time finding a place to hook up guage because of steel and hard plastic lines, but when we finally did, we lost pressure when cranking. New fuel p...	17
	2002 Chevrolet Suburban 1500 LT 5.3L No Start, Stall, MIL Lamp on VIN: 1GNFK16Z62 This one is fixed. I had to go under 2003 in mitchill to find the code p0179 and the wiring for this truck. That ecm fuse number 2* sent power to the FCM on this flex fuel truck. I found the module next to the fuel filter and check the Wiring harness for it up... Trouble codes: P0179.	7
	2004 Chevrolet Malibu 2.2L Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G1ZS52F04 we found out that the cat was under warranty. the car went to the dealer and the customer is going to let us know how things nwork out. thanks for all the help.	15
	1979 Dodge Class A 440CID All VIN: 22M30059S- Customer decided to have a 'friend' help him with it. I really appreciate the prompt replies... Just goes to show how valuable this site is. Happy New Year, Gus	4
	2001 Dodge Durango R/T 5.9L Unknown VIN: 1B4HS28Z01 We checked the cooler for a restriction like many of you said. Good flow. We flushed the cooler. Installed another used transmission. Shifts like a champ. I guess just one of those things you get when buying a used one. Thanks for all the replies. Happy Holida...	4
	1987 Ford Thunderbird Sport 5.0L mil VIN: 1FABP61F7H No MIL is required for ANY FORD CAR in 1987, and most 1988 do not except for 1.9L TBI. The info was faxed to me by Cal state BAR. This fax was out of same Mitchell Emission Control applications book that the smog shops use and you better believe I am gong to o...	5
	2000 Ford Explorer XLS 4.0L drive belt VIN: 1FMDU62X4Y Had to close before we knew for sure a new damper would fix this. They are on factory back order from Ford with no shipping date. We tried a aftermarket unit from Napa but it was terrible. The hub was pressed on 1/2 groove different that it should have been pl...	25
	2002 GMC Sierra 2500 HD 6.0L abs VIN: 1GTHK29UX2 We never could see anything funny with a speed sensor (using a lab scope too), but looking at data, found the left front dumping pressure. quite a few said replace the bearing instead of just sensor, so we went that way, when we removed the bearing, we found t...	38
	2001 Honda CR-V EX 2.0L 1-2 shift VIN: JHLRD18631 The problem was a stuck valve caused by the countershaft bearing coming apart. I noticed a noise when running the vehicle on a lift and determined the transmission needed to come out. The second time I put a shift monitor on the solenoids the computer was comm...	4
	2002 Hyundai Elantra GT 2.0L MIL Lamp on VIN: KMHDN55D82 Well it seems that the main problem is that my Solus scanner did not show fuel trims and the diagnostic info was very limited. Ran a wave form on the B1S1 HO2S and found that the sensor was not responding fast enough and readings were low, at 200ppm HC sensor ... Trouble codes: 1166 (Lambda bank control limit bank 1).	5
	2006 Hyundai SANTA FE 2.2L Safety VIN: KMHSG81WPT Well I took this car to the dealer. The only scanner that works is from Hyundai. All of us spend money every year updating ours tools and the car makers keep changing. The problem was solve replacing the driver safety belt assy.	7
	2001 Jaguar S-Type 4.0L Cooling Systems VIN: SAJDA01P31 Thanks to everyone for the input. We did find a bad thermostat which did fix the problem. Also found out there was a new calibration for this vehicle available. Happy New Year	13
	1996 Jeep Grand Cherokee Laredo 4.0L Hesitation, Cuts out, Stall VIN: 1J4FX58S1T I want to thank all the input given on this vehicle. This was the fix. The distributor was replaced with a reman distributor (A-1). It appears when the reman the distributor they do not drill the hole for the gear according to specs. The sycn was out just enou...	19
	2003 Mazda Protege DX 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: JM1BJ2255X thanks to all who have taken the time to help me. your knowledge and experience means alot to me. the problem that cured the 03 mazda protege was the egr valve. along with the cylinder 4 coil. which i also recommended, but customer did not want. the car runs l... Trouble codes: P0300 (random cylinder misfire).	6
	1996 Mitsubishi Galant ES 2.4L MIL Lamp on VIN: 4A3AJ56G1T customer did not approve service but the reply was correct about asensor for man. pressure Trouble codes: P1400.	3
	2000 Nissan Maxima GLE 3.0L Stall VIN: JN1CA31D4Y Thanks for all the help on this one. Although the reading from the MAF did not seem off, a new MAF fixed the problem. Do to the high request for these sensors from the dealer, the price dropped way down on this particular one ( just over $100). Thanks again......	8
	1990 Oldsmobile Toronado Trofeo 3.8L Radio / A/C VIN: 1G3EV13C7L Thanks for the help. I don't know, nor can I confirm whether or not the last 4 of the VIN will unlock the CRT unit. It is more than just a radio, it is the ATC and NAV unit with some type of theft unit. (Although, it did not keep the car from starting, nor did...	3
	1996 Plymouth Voyager 2.4L No Start VIN: 2P4FP25B5T thanks to all who replied.after checking all wiring to crank and cam sensors,double checking cam and crank timing installed new pcm and shazam it runs.	12
	2000 Pontiac Bonneville SE 3.8L Stall, MIL Lamp on VIN: 1G2HX54K8Y thanks for all the replies. i ended up changing the pcm and problem seems to be gone. i went with the pcm because i couldnt believe that i had 2 maf sensor that were bad and would cause the same thing. there must have been a short in the pcm to cause the maf t... Trouble codes: P0101 (Mass Air Flow Circuit Out Of Range).	7
	1993 Saturn SC2 1.9L Stall VIN: 1G8ZG1574P Well it has been over a week and the car is still running so I will say it is fixed. We had some great suggestions and I appreciate all the help. Most of the suggestions were basics and I like to reinforce them to the kids. I was frustrated that we never fou...	11
	2000 Saturn LS1 2.2L dash lights,security VIN: 1G8JU52F5Y HI techs, I replaced the bcm and all is well.The bcm did have to be reprogrammed by the dealer.Thanks to all who responded.	8
	1998 Subaru Legacy Outback 2.5L TCC Solenoid VIN: 4S3BC6858W Thanks so much for all the very helpful replies! We pulled the transmission pan back off, and scrutinized the wiring harness.Found a slight cut in the harness to the solenoid(thankfully it is quite accessable).We cut out the suspect section and re-spliced the ...	7
	1990 Volkswagen Golf GTI 8-Valve 1.8L No Start VIN: 3VWDK21G4L Thanks again for all of your help. This one is finally fixed and out of my shop! I had a 3 volt drop between the fuel pump relay and the main power to the injectors. It was unclear which wires ran for the back of the fuse box to the injectors since the colors ...	7
	1991 Volkswagen Golf GL 1.8L No Start VIN: 3VWFA21G6M well i would like to thank those that took the time to respond. i did replace the starter, bat +/- cables and the car cranks over wonderfully. it will start then stall within a couple of seconds, then no start there after. i had a vw master tech stop on out an...	8
	2001 Volkswagen Passat GLS 1.8L Misfire, MIL Lamp on VIN: WVWPD63BX1 Thank you for all of your help and I found this one by looking at the throttle body when the problem was there. The thorttle plate was suck out a little bit. By takeing it apart and looking at the motor itself found that the inside magnets were broken on the i... Trouble codes: 16684 (Ramdom misfire), 16685 (1 misfire), 16686 (2 misfire), 17705 (Pressure loss at conettion before charger), 17972 (Thr. valve before base), 17976 (Thr valve).	4

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