Automotive Technicians Technical Discussion and Fixes for Oct 29, 2010

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	Help Request	Answers
	1986 Alfa Romeo Spider Veloce 2.0L Lighting VIN: ZARBA5419G This is really strange. The turn signals on this vehicle work even when the key if off. In reviewing the factory diagram for the turn signal/flasher wiring, the ignition switch is not even on the page, and it shows that both are powered by fuse 5 which is hot ...	View
	1983 Audi 4000 1.7L Poor Idle Quality, Stall VIN: WAUFA0814D Hello old school cis guru's, we have a weard problem with this audi,starts up fine cold idles ok but when you drive it slow over a bump it stalls, also intermittant at idle or coming to a stop it stalls. We found if you bang on the intake boot it will stall to...	View
	1991 Buick Park Avenue 3.8L starter interupt relay VIN: 1G4CW53L4M Hello everyone and thanks in advance. I am need to locate the starter interupt relay. This vehicle will not start and I've verified that there is no voltage to the transaxle position switch. And the 10 amp fuse between the ignition switch and the starter inter...	View
	1997 Buick Skylark Custom 3.1L anti theft VIN: 1G4NJ52T7V car came in start then stalls theft system set.. customer said she had the problem appx 3 years ago and they replaced the lock key and tumbler assy and worked good for the 3 years.. now problem is reaccurring..we could not duplicate it.. i disconnected the con...	View
	2002 Cadillac Escalade EXT 6.0L assist VIN: 3GYEK63N52 hello all. have this caddy,and when your pulling into a parking spot then turn then straighten wheel it momentarily losses assist in steering wheel very intermitten. have replace hydroboost cause it was leaking, and replaced pump. still having issue. any help ...	View
	2004 Cadillac SRX 3.6L Traction Control VIN: 1GYEE63754 Vehicle came to me for traction control enabled message coming up speratically in message center. Drove the vehicle and drove the vehicle never happened for me. A day or 2 later the guy came back and said it was acting up, went for a ride with him and sure eno...	View
	1992 Chevrolet K1500 Silverado 5.7L Hesitation, Cuts out, Stall VIN: 1GTEK14H9N Towed in Starts and idle fine. Tested fuel pump within specs. Road tested stalled. While on the road and no start cranked had blue spark. Replaced fuel pump with ac delco fuel pump and still does the same. Checked egr-okay Where to look? Thanks in advance for ...	View
	1994 Chevrolet Caprice Classic 4.3L No Start VIN: 1G1BL52W5R not sure about this system, i pulled up a wiring diagram for this vehicle and checked the red wire for power with key on. there is power. i assume the distributor that sits behind the water pump is my problem but not for sure. please help with any suggestions.	View
	1998 Chevrolet K1500 Silverado 5.7L 2-3 shift dear gm techs I rebuilt this 4l60e due to no 2-3 or 3-4 shift, however I have the same problem. I airchecked the transmission before reinstallation and found no problems. Could the valve body affect this? or perhaps the pressure sensor? (it has no readings in...	View
	1999 Chevrolet Tracker 2.0L MIL Lamp on VIN: 2CNBJ13C6X This Tracker came in with the check engine light on. Scanned ecm and found code P0400 in memory. This is an Egr flow code. Both 12v power supplys to Egr are good, the control ciruits work with the ECM - I tested with a labscope to check the voltage. I do not k... Trouble codes: P0400 (egr)	View
	2000 Chevrolet Tahoe 5.7L No Start VIN: 1GNEK13R6Y Installed new Delphi pump, due to intermittent starting failure with no fuel pressure. After installation, pump primes with key up and primes after key down again. Pump DOES NOT always prime with key up. Checked ohms on grounds, checked out fine... Main concer...	View
	2003 Chevrolet Blazer ZR2 4.3L front VIN: 1GNCT18X23 when engage front axle it will grind but wont ingage light stays on all the time showing four wheel drive is engaged. i have changed 4 wheel drive switch and encoder motor vac switch and gear and washer kit in front axle . it will engage some times. but lite s...	View
	2004 Chevrolet Silverado 2500 HD LT 6.6L Oil usage VIN: 1GCHK23114 Customer has been traveling across country and developed a severe oil leak on the passenger side of the engine so bad that he has been down 6 quarts twice. I cleaned off engine and ran on hoist to look for leak. I see blow by vapor comming from the PCV vent tu...	View
	2007 Chevrolet Malibu Maxx LT 3.5L battery VIN: 1G1ZT68N87 car came in with a draw about three weeks ago and while checking for the cause it just went a way. we did let it sit for about an hour to make sure the modules went to sleep.the car is back with the same draw. this time we found if you pull the bcm fuse #20 it...	View
	1997 Chrysler LHS 3.5L Cuts out VIN: 2C3HC56F9V vehicle contiues to stall after replacing timing belt and cam and crank sensors as well as cam sensor pigtail shows code 11 loss of cam or crank signal usually occurs after warmup Trouble codes: 11 (loss of cam or crank signal)	View
	2002 Chrysler Town & Country Limited 3.8L No Start VIN: 2C4GP74L22 Vehicle was involved in a collision ran great after the wreck but now its dead in the water. It turns over but does not fire and gauges/odometer don't respond when key is turned on. Fuel pump comes to life with the key on. No spark at the plugs. My guess would...	View
	2006 Chrysler 300 C 5.7L Misfire VIN: 2C3LA63H66 p306,p1416, both codes for #6 cylinder, no compression, intake valve not opening, have replaced #6 mds solenoid, no change to misfire, performed function test on #6 six mds solenoid and other three all worked clicked normally. ran engine with valve cover off a...	View
	1998 Dodge Stratus 2.4L MIL Lamp on VIN: 1B3EJ46X7W hey guys have this stratus with cel on.all three codes are for circuit faults and do not come back right away after being cleared.if i perform the atm tests the components work every time even while wiggling connectors.i replaced the leak detection pump for th... Trouble codes: P1490, P1495, P0645	View
	2003 Dodge Neon SE 2.0L Poor Idle Quality, Surge, Stall VIN: 1B3ES26C93 Hello. This Neon will run rough shortly after starting it. Slightly and progressively gets worse, sometimes stalling. Then it clears up and runs fine. It will do this almost every time you start it, hot or cold. When it acts up the front o2 sticks and you can...	View
	2005 Dodge Ram 3500 Laramie 5.9L No Start VIN: 3D3LS38C75 Truck towed in with crank/no start. When key is on the voltmeter does not move and the fuel pump relay and pump are cycling on and off like a turn signal. All warning lights come on as normal. I had 350ma draw and suspected bad Cummins ecu but when ecu was unp... Trouble codes: P1602 (PCM not programmed), B00DY, A1RBA	View
	2006 Dodge Sprinter 3500 2.7L Excessive Emissions, Surge VIN: WD0PD54436 This message is for another tech here in my shop, I am not a diesel tech, so am not much help to him. Here is what is going on...Surges at highway speed, also blows black smoke when surges. Scaned - no faults, will surge while power braking in the shop also, i...	View
	1996 Ford Mustang 3.8L Hesitation, Surge, Misfire VIN: 1FALP4042T Has a miss at idle #6 & #3 set cam sensor miss went away but has a rough idle Has 150 psi on all cyl good fuel pressure nice injector spray patturn.	View
	1998 Ford Expedition XLT 5.4L Hesitation, Misfire, MIL Lamp on VIN: 1FMPU18L0W HELP, Never had one so hard to fix. Missing under slight load most of the time. Truck came from another shop in which they put new coils and plugs in it but still missed on cyl 7. They then put an injector on at cyl 7. Still misses so he brought to us. I swapp... Trouble codes: P0307	View
	1998 Ford Explorer XL 4.0L Reverse VIN: 1FMZU34EXW Thanks in advance! This is my father's work truck. He came out of a store and went to back out. Put it in reverse and it just made a ratcheting/Grinding noise and did not move. In drive the truck runs normally until you let off to coast, especially at 40-60mph...	View
	2003 Ford F-250 Super Duty XLT 6.0L Stall, Delayed restart VIN: 1FTNW21P93 Replaced #2 and #6 injectors at he same time within a month. Within a week it started to stall and not restar until cooldown(6 to 10 minutes) found that it would cut out but not stall when pulling/wiggle the engine harness. Replace harness.prior the ipr and ci... Trouble codes: P2363 (Injection pressure regulator open), P0290 (Injection pressure low)	View
	2004 Ford Explorer XLT 4.0L Surge, Cuts out VIN: 1FMZU73K24 at approximately 4000 rpm while watching fuel pressure on modis when vehicle appears to disengage transmission, pressure drops to 5# for a moment recovering to initially [...]# then settling in at 40PSI, the vehicle drives normally 95% of the time. a...	View
	2004 Ford E-450 Super Duty 6.0L no power cold VIN: 1FDXE45P64 any help would be appreciated---vechicle produces 17 psi of boost when hot but no boost cold---vechicle passes koer test---can anyone tell me what would prevent boost cold??? thanks, tony. Trouble codes: P2262	View
	2006 GMC Envoy SLT 4.2L block heater VIN: 1GKDT13S76 third block heater is now burned out again. is GM having a poor quality heater for this car. do i go with a after market heater and what brand	View
	1995 Honda Accord LX 2.7L Cuts out, Stall, MIL Lamp on VIN: 1HGCE6647S Hi Guy's, This car has good fuel pressure, just did tune up, cap, rotor, wires fuel filter and injection service. the problem is on any kind of moderate acceleration the engine will shut off ( loses injector pulse) fuel pressure stays right up you can keep the... Trouble codes: P1361, P1381	View
	2001 Honda Civic EX 1.7L No Start VIN: 2HGES25701 Hey Honda guys need some help on th, have this civic with the imobilizer light flashing and a no-start. Is there anything that I can do to reset the system or is this thing going to have to go to the dealer for reprogram. Original key, actually test drove the ...	View
	2003 Honda Odyssey EX 3.5L rear ac VIN: 5FNRL18673 Hello all. I have this Odyssey that came in back in june for rear ac not blowing cold. The front ac works just fine. I checked the pressures and they were ok. High side around 175 and low side around 30.I did the feel test on the lines at the rear ac and the i...	View
	2000 Infiniti I30 3.0L Cuts out VIN: JNKCA31A0Y hello fellow techs, We have a vehicle at our shop, when its warmed up it stalls at idle . At 2000 rpm engine will surge 500 rpms when held steady throttle. No vacuum leaks, tried a new maf(no-help), cleaned the throttle body really well including iac passage-... Trouble codes: P0175	View
	1987 Jeep Wrangler 4.2L detonation VIN: 2BCCZ81JXH need a little help on this one. on slight acceleration you can hear the engine detonating ( or pinging as some post called it ) i have checked all the basics the timing is at 9 deg at 1600 rpm as per instructions with vac disconnected ( this has manifold vac t...	View
	2003 Kia Sedona LX 3.5L drain VIN: KNDUP13143 Looking for spec for acceptable parasitic draw for this vehicle...customer claims vehicle has to be jump started after sitting for about 5 days. Battery/alt/stater have passed all tests...the only fuse that seems to affect drain is "memory" 10 amp mini in fuse...	View
	2006 Mazda 3 S 2.3L Mechanical VIN: JM1BK34396 This car has a rod knocking noise that only can be heard a the rpm range of 1500 to 4500. You can remove the spark on cylinder number 2 and the noise will go away. I was thinking this could possibly be a rod bearing??? I did take a oil sample and looked into i...	View
	1989 Mercedes-Benz 300SEL 3.0L A/C fuse blows VIN: CA25D4KA42 Looking for under hood fuse/relay panel identification of relays. They seem to be labeled A through I, printed on the panel under the relay. Relay H and I specifically get hot to the touch, engine on or off. Removing relay H drops the draw to 0. In order to co...	View
	2004 Mercedes-Benz C320 3.2L hard start VIN: WDBRF64J44 need help has a hard start after sitting over night has an extended crank and rich codes Trouble codes: P0172, P0455	View
	2000 Mercury Sable LS 3.0L Convertor VIN: 1MEFM59S1Y Hi All, This car came in 3000 miles ago with the transmission light flashing and code P0741 stored. We have seen this before and checked condition of fluid. It was yellowish and smelled burned so we recommended complete transmision replacement with Ford unit.W...	View
	1997 Plymouth Voyager 2.4L Headlights VIN: 2P4FP25B1V Hello group: I actually think I figured this one out already but need some imformation. Voyager came in with no headlights,dash lights or parking lights. Hooked a modis to it and accessed the bcm. Turn headlight switch on and scanner reads headlight request as...	View
	2003 Saturn Vue 3.0L Poor Idle Quality, Stall, Misfire VIN: 5GZCZ63B03 We just replaced the front bank head gasket on this vue for and external coolant leak. After engine was reassymbled it ran very poorly and set misfire faults for every cylinder on the front bank. Upon performing a compression test found 0psi is 2 holes and 80p...	View
	1992 Subaru Legacy 4x4 2.2L ride quality VIN: 4S3BJ6320N ok, got one we could use some help with here. 5 speed vehicle has a substantial vibration at 40 mph, espescially on decel. the first tech to look at it noticed the RR wheel was somewhat wobbly. we obtained a used hub/knuckle assy and control arm and installed ...	View
	2003 Subaru Outback 2.5L engine VIN: 4S3BH67583 Help!!! Don't know if it's us or the Subaru gods have it in for me. 2.5 sohc timing belt failed at road speed, bent all valves. Vehicle had good maint. record. Customer stated no running problems prior to belt failure. Pulled heads, engine looked good inside. ...	View
	2002 Toyota Camry LE 3.0L readiness monitors VIN: 4T1BF32KX2 Hi Toyota Techs, I have a 2002 camry that came in with ck engine light on and a p0430 code for bnk 2 cat. looking at scanner I saw that bnk 2 rear sensor was a little faster than bnk 1 but not very much. client needed car to go thru emission test to renew tag... Trouble codes: P0430, P0116	View
	2005 Toyota Highlander 2.4L master cylinder VIN: JTEGD21AX5 Calling alll Toyota specialist. I have a 2005 Highlander w/disc brakes front and rear that is running me up the wall. It has no rear brakes unless you pump the brakes it will hold pressure and not bleed down until you release the pedal, next application only f...	View
	2004 Volvo XC70 2.5L Differential VIN: YV1SZ59H84 Transmission service light is on as well as check engine light,also customer is complaining about ABS light on at times speedo in op at times and vehicle down on power at times. CEM-1A64 AOC control module single missing.Active code. Code returns as soon as i...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2006 BMW 325i 3.0L window programing VIN: WBAVB13596 thanks guys i followed the procedure as outlined in mitchell and also followed your suggestions the fix was to install another motor 3 cheers for napas rebuilde	7
	2004 Cadillac CTS 3.2L Clutch VIN: 1G6DM57N54 Not a lot of help on this one, but those who suggested hydraulic problem were right. I flushed the clutch system and the pedal came back to normal. I didn't see any signs of fluid leakage. The customer wants to leave it alone for now and see if the pedal deter...	4
	2005 Chevrolet Silverado 2500 HD 6.0L Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCH1629VX well im not calling this one fixed. the customer has left and driven 1k miles without the light returning and his milage has jumped from 8mpg to 10.5mpg he is ok with it for now. still cant exsplain a simple misfire and that buggs me exspecially when the vehic... Trouble codes: P0300.	38
	1999 Chrysler Town & Country LX 3.8L Computers VIN: 1C4GP64L0X THANKS FOR THE HELP MY CCD BUS HAD 2.5 VOLTS AT IGNITION OFF AND 10 WITH IGNITION ON THOUGHT I HAD ALL MODULES UNHOOKED BUT FORGOT ABOUT THE HEATER AND REAR WIPER MODULE MANUALL TEMP CONTROL. STARTED PULLING FUSES UNDER DASH UNTILL I HAD A VOLTAGE WERE IT ...	16
	1992 Dodge B250 5.2L No Start VIN: 2B4HB25Y9N sorry for taking so long, just wanted to make sure it was gone and fixed, it ended up being the computer i guess the 3rd one is the charm, thanks for all the replys	9
	2002 Dodge Caravan SE 3.3L Misfire, MIL Lamp on VIN: 1B4GP25302 Thanks to all. Oddly enough we found the problem in the connector to the injectors. We were looking in the area of the injectors and when we moved the harness the engine ran worst. It looked like acid was in the connector and ate some wires. Did repair and ... Trouble codes: P0301 (Cylinder 1 Misfire), P0305 (Cylinder 5 Misfire), P0300 (Random Cylinder Misfire).	14
	2003 Dodge Grand Caravan 3.3L Starting VIN: 2D4GP44333 thanks to all , all replys were pcm. pcm fixed it, just hard these days with one shot pcm's. Forward control module was also defective but owner declined repair. It is not a control for the starter. Trust your gut and thanks again for the push.	10
	2004 Dodge Ram 2500 SLT 5.9L Cuts out, Stall VIN: 3D7KU28C94 The vehicle left and never came back as of now. Everyone who wrote felt it was a fuel problem. The advice was to check the lift pump, as well as check the injector return flow. One writer posted the procedure for checking the fuel system. If I get to look at i...	4
	2000 Ford Windstar LX 3.8L Lighting VIN: 2FMZA6148Y i would like to thank kirk, henry, greg, and dave for taking time to answer. it is not fixed, it got into a minor accident, we will have an other go at it, onced it comes out of the body shop. thanks steve	4
	2002 Ford Explorer Sport Trac XL 4.0L 4&4 VIN: 0001231111 thanks to all replaced 4&4 computer every thing is fine now thanks again	4
	2004 Ford F-150 Lariat 5.4L Misfire VIN: 1FTRWO7673 I do applogize for taking so long to close this. Unfortuntyl I nevere could figure it out. It was weird because it would come and go. Myself and another tech took the the truck for a very long test drive useing his Verus. Right when we thought we had it pinpo...	20
	2005 Ford F-450 Super Duty XL 6.8L No Start VIN: 1FDXF46Y05 Bob was close, James hit it on the head. They mounted the hydraulic pump for the domp bed right against the left o2 sensor and it finally cut thru on its self. have to move hydraulic line so this does not happen in the future. thanks for those that responded. ...	5
	2006 Ford Ranger XLT 4.0L No Start VIN: 1FTZR45E76 Even though fuel pump amp draw, pressure and volume were OK, we installed a new factory fuel pump module and problem has not returned. Trouble codes: P0232 (fuel pump seondary circuit high).	6
	2000 GMC K3500 Sierra SL 7.4L Erratic fuel guage a VIN: 1GDJK34JXY I really hate to admit defeat especially on autos, However this fuel system has stumped myself and another. All of the wiring is correct and shows proper voltage and grounds. The sending units and balance modules are new as is the PCM and fuel relays. There we...	6
	2001 Honda Civic EX 1.7L ring gear Thank you for all the information, this is a very good, trusting customer, as well as a friend. I printed out all your responses and let her read them. This helped my situatin enormously. I stand by my work 100% and if this was a fault of my own, I would eat i...	10
	2005 Jaguar XJ8 L 4.2L Fan/T-stat/Gauge VIN: SAJWA79C55 Thanks to everyone who responded! As I suspected, replacing the thermostat cured the circulation problem and brought the engine temps back to normal with no more excessive fan operation after shut down. The concensus of responders regarding the fan strate...	7
	2003 Land Rover Discovery SE 4.6L Starting VIN: SALTY6433A thanks everyone for the good advice.i replaced the crank sensor.and I hav,ent seen them sence. I guess that is a good sign.the gas filter is in the tank.thanks everyone	9
	2001 Lexus RX300 3.0L rotors, pads VIN: JTJHF10UX1 After making sure that all of the brake components were in good working order the concensus was that the ACDelco ceramic brake pads that I used are the culprit. The customer declined to replace them with OE pads as the Delco pads leave less brake dust on the w...	18
	2001 Mercedes-Benz C240 2.6L front marker lights VIN: WDBRF61J01 replaced the front sam module and had it coded lights are fixed thanks for all the replys on this issue and hope to be of help to others when needed	5
	2001 Mercedes-Benz CLK320 3.2L Shifter VIN: WDBRN47J62 Thanks for the help, I monkeyed around with it for awhile yesterday and was able to get it adjusted correctly. Thanks again!	4
	2004 Mercedes-Benz CL55 AMG 5.5L active body control VIN: WDBPJ74J74 thanks to everyone that replied. vehicle is repaired we swapped a pressure supply unit(accumulator, pressure sensor,block assembly) from another vehicle that was leaking with no change. we swapped suction restrictor valve with original & pressure built up to ...	4
	1995 Mercury Cougar XR-7 4.6L Surge, Stall, MIL Lamp on VIN: 1MELM62W3S Everyone hit this one on the EGR but that was minor. The issue was carbon blocking ports to idle air controler. Thanks for everybody's help. Trouble codes: P1407 (No egr flow detected), P0171 (Lean bank 1), P0174 (Lean bank 2).	14
	1991 Mitsubishi Galant VR-4 2.0L compressor VIN: JA3CX56U5M Thanks for your help everyone. I ended up replacing the compressor again and that fixed the bouncing high side pressure but the valve blew again while i was driving which was a good thing because i figured out that it blows at 7500 rpms which is well over red...	4
	1994 Mitsubishi 3000GT SL 3.0L Stuck In 3rd Gear VIN: JXRY006187 THANKS EVERY BODY FOR YOUR HELP, THE PROBLEM WAS BROKEN OIL PRESSURE SOLENOID VALVE WIRE (BLUE/YEL)BY THE CONECTION, FEW TIMES THAT I TESTED THE WIRE, IT WAS OK ,BECUSE FOR SOME RESEON WIRE WAS BROKEN IN SIDE THE COVER.ONCE I FIX THE WIRE EVERYTHING WAS GREAT....	6
	2002 Oldsmobile Aurora 4.0L Poor Idle Quality, Surge, Stall VIN: 1G3GS64C12 thanks for the replies. I love this place. I have gotten a few people to join. anyway the boot/gasket that goes between the intake and t/b was the fix, bottom firewall side had a tear in it about an inch long. part#[...] Trouble codes: 171 (right bank lean), 174 (left bank lean).	2
	2005 Subaru Impreza WRX STI 2.5L Security light VIN: JF1GD706X5 This was a students vehicle: We tried all possible suggestions, but none seemed to be successful. Finally we tried a method that was correct, but the remote did not beep as it should. Open driver side door with key, go inside the car hold the remote to open fo...	2
	2007 Toyota Camry CE 2.4L Valve Cover VIN: 4T1BE46K37 My worry was that I was missing something that the Toyota techs have seen commonly. Doesn't appear to be a common problem, so I replaced the valve cover, damaged coil pack, and with no other apparent problems, car is down the road.	4

(Also Available: All, Asian, Chrysler, European, Ford, GM.)