Automotive Technicians Technical Discussion and Fixes for Apr 8, 2014

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	Help Request	Answers
	2003 Audi A6 3.0L converter VIN: WAUJT64B93 Audi came in with CEL and PRND blinking. Diagnose check engine light to a shorted rear o2 on pass side. replaced sensor erased codes all good there. for a short time all seemed good. car came back next day with PRND blinking again. when this happens it will no...	View
	2004 BMW 525i 2.5L Unknown VIN: WBANA53564 This vehicle came in limp mode with codes: 4F90 - ratio monitoring gearshift 2-1, 4F84 - ratio monitoring clutch D, 5149 - CAN time out PM. I can find no information on these codes. ATF is full and very clean. Codes have been cleared. Vehicle is not in limp mo...	View
	2004 BMW X5 3.0i 3.0L cooling system VIN: WBAFA12020 Hi Technicians, I need a bit of help with this vehicle.Vehicle came in 3 months loosing coolant.Found radiator leaking.Replaced radiator and cap.Vehicle returned loosing coolant 1 month ago.Pressure test radiator no leaks found externally but oil and water mi...	View
	2006 BMW 760Li 6.0L No Start VIN: WBAHN03506 Engine cranks but does not start. Autologic shows good fuel pressure. Valvetronic is in limp home mode. DME1 reads 1 volt for battery voltage (live data, it also has no communication with alternator and EGS). DME2 12.4 Volts.(has valvetronic fault). Fuses chec... Trouble codes: 27F3, 277D, 28D7	View
	2001 Chevrolet Venture LS 3.4L front wendows VIN: 1GNDX13E61 car came in both front windows intermitent .After testing left door wires and motor and seeing nothing wrong I replaced the left door window switch and every thing worked. Car came back and the left window is very intermitent,it will work for a while then quit...	View
	2006 Chevrolet Trailblazer LT 4.2L MIL Lamp on VIN: 1GNDS13S26 I got this trailblazer in from another shop where they had be shotgunning parts at it. Has a hard PO411 every time the system test runs. Baro reads atmospheric at 14psi as does the air pressure sensor static or running. When I activate the air pump with the so... Trouble codes: P0411	View
	2007 Chevrolet Silverado 2500 HD LT 6.6L Cruise Control VIN: 1GCHK236X7 I have 2 customers , with both are haveing the same problem, the cruise control will not set or turns itself off, when the temp outside is colder. Works better as outside temp rises. No codes, no tech bulletins, no record in repairs. Any help wi;; be greatly a...	View
	2001 Chrysler Sebring LXi 2.7L flexplate/converter VIN: 1C3AL56UX1 Car came in with knocking noise when cold, could not confirm on first visit. When left overnight, found flexplate broken around crank bolts. Removed broken/cracked flexplate and noticed 1 bolt hole was modified(poorly) I figured it was because it was improperl...	View
	2004 Chrysler Sebring LX 2.4L Cruise control VIN: 1C3EL46X84 Cruise control does not operate correctly. Continues speeding up past set speed until it hits about 10mph over the set speed, then the bleed solenoid opens and closes causing the car to slowly surge. On solus pro, in the speed control pids, it shows vehicle sp...	View
	2005 Dodge Grand Caravan SXT 3.8L refueling VIN: 2D4GP44L45 We have a fleet of six handicap converted vans that we service. This van is new to the fleet and has a unique problem none of the others have had. The fuel tank is not stock and is relocated. The conversion company removes the control valve and rollover valve ...	View
	2006 Dodge Magnum SXT 3.5L Electronic VIN: 2D4GZ47V86 This is an awd magnum that has two new wheel speed sensors but doesn't read properly. r.r. reads 0 l.f. tries to read a little. The transmission will not shift out of 1st. Does it need all wheel speed sensors for shifting? What does the sensor pick up in the h...	View
	2008 Dodge Ram 1500 SXT 5.7L MIL Lamp on VIN: 1D7HU18218 Thanks for any help you can give, I hope some Chrysler techs can point me in the right direction. About a month ago I was given this truck with an EGR valve on the seat. The part came from NAPA, the customer had the truck scanned at AutoZone and was told it ha... Trouble codes: P0404 (EGR Position sensor)	View
	2008 Dodge Ram 2500 SLT 6.7L drivetrain VIN: 3D7KS28A38 Hi Folks, This vehicle came in for a service and a brake check.Brakes were fine,test drove the vehicle,and under acceleration it is fine,but on deceleration when you get to about 45 mph,you start feeling a vibration.And the slower you coast down,the worse it g...	View
	2002 GMC Sierra 3500 SL 6.6L Trans Shifting VIN: 1GTJK33132 We have a 3500 Sierra 4X4 Truck That Recently Went Into Limp mode the customer thinks.Was pulling horse trailer & it started shifting weird.Then trans temp guage went up higher than normal.Then had no reverse & R On PRNDL Was Flashing when it had no reverse.Af...	View
	2006 GMC Sierra 2500 HD SLT 6.0L No Start, Stall VIN: 1GTHK29U86 This customer can home one night shut it off the next day Start and then stall So anyways, Truck starts and then stalls every time start stall start stall start stall. I have no communication with scan tool for PCM/ECM I can Keep it running as long as I spray ...	View
	2005 Kia Sorento EX 3.5L battery VIN: KNDJC73395 every 3 to 6 months this car will have a dead battery after setting for four hrs. customer will go to work and at lunch time the battery will be to weak to start. tow truck will jump start and the customer will drive to the shop. we charge the battery and do a...	View
	2001 Lexus RX300 3.0L DLC No communication with PCM VIN: JTJGF10U21 No communication between the DLC connection and the ECM. Had a problem communicating with BCM and ECM, went through the ground junctions and found one had a bad coonnection. cleaned all grounds and tightened. Car now has communication with a scanner to the BCM...	View
	2002 Lexus SC430 4.3L MIL Lamp on VIN: JTHFN48Y62 I am hoping someone can lend a hand because we are all out of ideas. This sc430 came in overheated to the point that the timing belt teeth had been stripped off due to a piston seizing in its bore and caused all or most of the valves to bend. The heads were se... Trouble codes: P1349 (Vvti malfunction bank 1)	View
	2005 Lincoln Town Car Signature 4.6L no brake lights New customer came in with no lower brake lights we checked the obvious parts bulbs fuses wiring etc. and got a "rebuilt" LCM that got very hot and ran down battery. hen we got a second "rebuilt" unit that did not function and then put in a used LCM which acted...	View
	2002 Mercedes-Benz E320 3.2L SBC module VIN: WDB2110422 "Service Brake visit workshop" warning on. check brake found front brake pads worn down to the sensor. Replaced the front brake pads and sensors. We scanned the SBC system found code C249F, service threshold reached. Warranty for the hydraulic unit was over. W...	View
	2006 Mercedes-Benz ML500 5.0L Front SAM VIN: 4JGBB75E06 Truck towed in w/ no crank, no start; Checked fuses & found 70a fuse for front SAM module (under RHF seat) blown. Upon further investigation found front SAM module connector "D" burnt. Dealer states that front SAM part # has been updated 10 times, new SAM inst...	View
	2007 Mercedes-Benz E320 Bluetec 3.0L catalytic converter VIN: WBDUF22X67 After failing emission test twice in two months and the local MB dealer is giving up so we are tasked with diagnosing this problem. No fault codes present now or during either test. No one has cleared codes and it has 5,000 miles put on odo since first test. V...	View
	2001 Nissan Maxima GLE 3.0L Ecu VIN: JN1CA31DX1 Burns ecu up as fast as you plug it up	View
	2005 Nissan Xterra Off-Road 4.0L SRS system VIN: 5N1AN08W75 The SRS light resets after 3-4 days with B1065 Assist A/B Module(front passenger) . I could not find any problems with wiring or connectors. Nissan says to replace air bag module and if that does not fix it to replace the air bad diagnosis unit. I am not very ...	View
	2006 Nissan Pathfinder SE 4.0L MIL Lamp on VIN: 5N1AR18U76 Hi folks. this 06 pathfinder came from an auction and blongs now to a local used car lot. It was a basketcase to begin with. transmission oil cooler failed and mixed tranny fluid and coolant, on top of having blown head gaskets. fast forward . the tranny is re... Trouble codes: P0021	View
	2000 Pontiac Bonneville SSEi 3.8L climate control VIN: 1G2HZ5417Y climate control is inop. on the display it have three dashes and does illuminate. I've tried to communicate but it will not with versus or tech 2. I did notice that carpet was soaked so I removed it to check for water damage none found. I also check all ground...	View
	2005 Pontiac Grand Prix GTP 3.8L Battery VIN: 2G2WR524X5 Hello again and any help on this issue will be great. Car came in with Battery Saver Mode active. The customer had the vehicle somewhere else and had the battery and alternator replaced there, of course they never got any deeper. Battery checks out and alterna...	View
	2007 Pontiac Grand Prix GT 3.8L Shifting VIN: 2G2WR55447 After replacing the cracked head we were test driving the Grand Prix. It was shifting hard. I know these have known issues with pressure contol solenoids. I brought it back to the shop and the fluid was low, but not low enough to cause problems. Topped off flu...	View
	1971 Porsche 914 4 1.7L fuel pump relay VIN: 4712910864 Here's hoping some of you older Porsche techs are still around! The fuel pump relay uses 4 pins: 30 to batt, 87 to f/p, and here's where the problem lies. Pin 86 should be 12v from pwr supply relay, 85 ground from ecu to energize relay. But on this cars circui...	View
	2008 Suzuki SX4 2.0L MIL Lamp on VIN: JS2YB41368 The one thing I've noticed is that if I erase the code and emission data as soon as I restart the car the long term trim Starts at 20.3%. I would think that it should star counting up the short term first and adding the long term trim as the short term trim re... Trouble codes: P0171 (Running lean)	View
	2001 Toyota Sienna LE 3.0L Oil Light VIN: 4T3ZF13C41 Thanks in advance. This sienna comes in complaining that she had to have it jumped because the battery was dead. now when the key is removed from the ignition switch the cluster stays lit until you use the turn signal switch then it all goes blank until the ne...	View
	2007 Toyota Tacoma 4.0L Pedal goes to the floor VIN: 5TEUU42N17 ounce in while the pedal will goes to the floor maybe 3 to 4 times out of the year !	View
	2000 Volkswagen Jetta GLS 2.0L Starting VIN: 3VWSA29M2Y Car towed in-was at two other shops. Car cranks but does not start. What I find interesting is that the dash warning lights do not light up w/ key on but will come on w/ brake pedal pressed and will blink on/off w/ hazard switch on. I do have power at instrume...	View
	2002 Volkswagen Passat GLS 1.8L Oil Pressure VIN: WVWPD63B12 the oil pressure pegs our gage past 100 psi at cold idle ,it will come down to 25 psi,@ hot idle, than 60 psi 2000 rpm .I have read that the oil pump has a 14.5 bar blow off valve ,which is over 170 psi ,also the oil cooler has a pressure relief valve in it ,b...	View
	2005 Volkswagen Jetta 2.5 2.5L ac system VIN: 3VWPG71KX5 customer state that the ac works for 5 mins and stops and as he drives throughout the day ac works again and some times stays cool longer than 5 mins. we check the ac system is full of freon compressor works fine no noise ect pressure is within specs i just do...	View
	2007 Volkswagen Jetta 2.5 2.5L Surge VIN: 3VWGF71K37 For the VW experts. Had this car in and customer complained of intermittent high idle. Also had a check engine light on. Scanned and found the P0171. Checked for vacuum leaks with the smoke machine and found none. Checked the MAF sensor for dirt and debris, no... Trouble codes: P0171 (System Too Lean), P0507 (Idle Control System RPM Higher Than Expected), P2279 (Leak In Air Intake System)	View
	2006 Volvo S60 2.5T 2.5L Poor Idle Quality, MIL Lamp on VIN: YV1RH59226 this volvo came for a problem that happens intermitently the rpm and the temp gauge dont works the selenoid of the shifter is clinking (like if we have the brake on) the abs light goes on the check engine light go on and the engine is running bad and sometime ... Trouble codes: U0002, P0600, P0700	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2005 Audi A6 Quattro 3.2L Misfire VIN: WAUDG74F25 Thanks for all the replies. It was a bad fuel injector. I decided I was going to swap injectors to see if it would switch cylinders. It was a little work getting to the injectors, pulled plenum, then high pressure fuel lines, then manifold containing bank 2... Trouble codes: 00077, 00571.	7
	2007 Audi A8 Quattro L 4.2L Air Suspension VIN: WAUMV44EX7 The Einstein saying of doing the same thing over and over and expecting a different result is the definition of insanity does not apply to European car repairs especially when it comes to reprogramming. After several attempts with the launch tool, height calib...	3
	2005 Cadillac CTS 3.6L valves VIN: 1G6DP56785 Well folks, I finally got her going. Valve job, new chains, guides, and tensioners and Im' out the door. We opted to fix rather than to replace the engine. The cause of the failure was left bank tensioner lost it's spring tension and poor oil quality. I used s...	11
	2003 Chevrolet Tahoe LT 5.3L Heated seat, left VIN: 1GNEK13Z63 First, thank you to all that responded with help. It was found that the problem was in the LF door module,(LF window switch). What was throwing me off was that the problem did not exist in the doaner vehicle I was swapping parts with, or so I thought. I ended ...	9
	1999 Chrysler Sebring LXi 2.5L Excessive Emissions, Poor Idle Quality, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 4C3AU52N3X Well thank you very much for all those who replied. I got allot of response on checking EGR valve. I had tunnel vision because it looked new. So I removed the egr valve plugged the vacuum port and wow it ran great. So for the hell of it i smoked just the egr v... Trouble codes: P0300 (Random misfire).	16
	2005 Dodge Grand Caravan SXT 3.8L cluster VIN: 2D4GP44L25 All replies were helpful in this case. the pci bus was shorting to B+ intermittantly. All the readily accessible modules weren't the cause of course. the breaking point came after I had looked over the wiring under the IPM. thinking I had it fixed I test drove...	8
	2005 Dodge Dakota ST 4.7L Mechanical VIN: 1D7HW28N85 I am closing this out due to time limitations but the customer is going to install a re-man valve body this week. The customer was kept in the loop the whole way and made the decision to try the pack so he is OK with the outcome. He or I will be attempting to ...	8
	1998 Ford Explorer Sport 4.0L No Start VIN: 1FMYU24E3W Hey it´s fixed! I thank you all for your kind and helpful suggestions. All I needed to do was cut and swap the 2 ckp sensor wires and the datastream instantly showed RPM. Better yet the engine started and ran. It did have a new aftermarket ckp installed so as ...	31
	2004 Ford Explorer XLS 4.0L No Start VIN: 1FMZU72K24 Thank you all for the help. I found out vehicle had been wrecked in the right rear corner 2 yrs ago. Traced wiring from fpdm to pump. Ground was open. Found wiring rotted badly due to shotty body repair. It was so bad I cant believe this vehicle drove in here....	14
	2007 Lexus ES350 3.5L MIL Lamp on VIN: JTHBJ46G47 Well I blew this one because I relied on the "Automatic" test only. It did pass 3 times and it did set the 2 codes exactly with the fuel cap removed. This is the path I usually use when testing Euro cars as well as Chryslers that have an "Automatic test". I DI... Trouble codes: P0455 (Gross evap leak), P0441 (Evap incorrect flow).	12
	2007 Saab 9-3 Aero 2.8L Air conditioning VIN: YS3FH51UX7 Went back to check wire connections between ambient temp.sensor and bcm(did trace those wires before and no remarkable resitance shown). This time, one of the wires showed a higher resistance than the other one. Traced wires again and found damaged wire where ...	14
	2005 Saturn Ion-2 2.2L door latch Finally got this one wrapped up and back on the road. The window fell out of the regulator grips. Also a bolt fell out that aligns the regulator to door plate. I knew the rods were bent do to everything colliding. The rod that opens the latch from the door han...	4
	2006 Subaru Legacy GT 2.5L MIL Lamp on VIN: 4S3BL67636 Thanks to Tad & Paul for replying. I didn't get much response on this one? maybe no one has much experience with this DTC or those who have didn't see the post? I did not do anything to fix this car as I cleared the code & the Light has NOT come back on fo... Trouble codes: P2009 (Intake Manifold Runner Control Circuit Low Bank 1).	2
	2001 Toyota Camry CE 2.2L Poor Idle Quality VIN: 4T1BG22K01 THANKS TO EVERYONE THAT SAID THERE MIGHT BE AIR IN THE SYSTEM. I BLEED PRETTY GOOD THE FIRST TIME, BUT I GUESS THERE'S IS MORE AIR IN THE SYSTEM. I RE-BLEED THE COOLANT SYSTEM ONCE AGAIN AND TEST DRIVE THE VEHICLE; IT IDLE NORMAL. THE VEHICLE IS OUT FOR ONE... Trouble codes: P0300.	13
	2006 Volkswagen Jetta 2.5 2.5L No Start VIN: 3VWGN11K96 I thank you all once again for your helpful suggestions. The real fix turned out to be a wiring problem near throttle body and MAP sensor. The MAP CMP and CKP a share a common 5 volt power supply. This 5v power was shorted lo at the damaged MAP harness. The ke...	5
	2012 Volkswagen Passat TDI SE 2.0L MIL Lamp on VIN: 1VWBN7A36C thanks everyone for your time. i had to replaced nox sensor with wiring and modual comes in one piece.it was bit pricy $356.00. car was not under warrenty due to mileage. thanks again Trouble codes: P2200, P2209.	5
	2002 Volvo S80 T6 2.9L No Start VIN: YV1TS91D92 Well this one is fixed. Finally got the guts/irrationality to try a junkyard PCM(even thought i allegedly had a good one). That gave me back the check engine light and everything stared working normally from a communication stand point. Of course I couldn't...	9
	2004 Volvo XC90 T6 2.9L Unknown VIN: YV1CZ91HX4 Thank u guys I reset the e brake with info you guys give me thank u guys again	6
	2005 Volvo XC90 2.5T 2.5L Poor Idle Quality, Hesitation, Stall VIN: YV1CZ59225 I sure appreciate the help on this one. Of the six replies 2 were exactly what I Asked for, and the other 4 went into more detail which probably saved my butt. Changed the hose pipe from the oil trap to the air intake, and cleaned the throttle body. Also c... Trouble codes: 120D, 440B, 4400 (fuel tank system low).	6

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