Automotive Technicians Technical Discussion and Fixes for Sep 23, 2011

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	Help Request	Answers
	2003 Acura MDX 3.5L Misfire, MIL Lamp on VIN: 2HNYD18693 Replace engine with used (see repair history). All went well, first road test the vehicle ran great. Performed alignment, road tested again to check steering wheel centering, vehicle misfired, code P0304 - found #4 coil was no good, swapped it out, road tested... Trouble codes: P1399 (Multiple cylinder misfire), P0304 (Misfire 4 cylinder), P0401 (Misfire 1 cylinder), P0700 (Transmission code - 3rd pressure switch circuit), P0300 (Random misfire), P2237 (Ho2s b1 s1 1p line high voltage)	View
	2001 BMW 525i 2.5L Excessive Emissions, Hesitation, Misfire, MIL Lamp on VIN: WBADT43431 Vehicle came in with 10 codes, misfire 1 - 6, and 4 codes for oxygen sensor limit codes. (Would list exact code numbers but I forgot to save repair order info in scan tool). Found crankcase vent hose under intake leaking. It was hanging on by a thread, complet...	View
	2004 BMW 745Li 4.4L Mechanical VIN: WBAGN634X4 Hello BMW techs, This 745il came in with several codes/issues: P0492 and P0491 Secondary Air System, low flow detected, both banks. 2774 Engine switch off time, plausibility - 27B8 Differential pressure sensor, intake manifold, plausibility - 2727 and 2721 O2 ...	View
	2001 Chevrolet Camaro 3.8L OVERDRIVE 4th VIN: 2G1FP22K61 the problem this car is presenting is:hard shift from 1st to 2nd (sligthly harder than normal),and it will be fine all the way through,but after driving this car for 6 or 7miles the transmission will start sliping (that is the engine will rev-up to 2500 -3000-...	View
	2005 Chevrolet Suburban 2500 LT 8.1L Hesitation, Surge, Misfire VIN: 2GNGK26GX5 under part throttle up a hill the engine feels like it is missfiring, but no missfires show up on the moniters. at half or more throttle it doesnt act up. power brake the truck and it doesnt act up. the truck never throws the check engine light.	View
	1997 Dodge Dakota SLT 5.2L No Start, Poor Idle Quality, Stall VIN: 1B7GG23YXV At times it will not start. This problem is very intermittent, so it is hard to diag and get data. Sometimes I can't get data from the pcm. Sometimes the CEL will be on all the time KOEO and sometimes it won't be. Sometimes it will not start unless I hold the ...	View
	1997 Dodge Intrepid ES 3.5L 2-3 shift VIN: 2B3HD46F0V Thanks in advance for your help!! This beast has engine flare-up when attempting 2-3 shift, and as a result goes into limp mode. All cvi readings ar well within normal range. I replaced the input speed sensor. It had failed the ohms test. I did the "loss of pr...	View
	1998 Dodge Grand Caravan SE 3.3L button lights climate control VIN: 1B4GP44R8W i have a caravan that when you start the vehicle the lights on the rear wiper, recir., a/c buttons begin to flash, after 10 mins of driving they stop flashing. i just got a 1998 plymouth voyager in and the same buttons flash for 10 min and then go out. has any...	View
	1999 Dodge Durango 5.9L pressure sensor VIN: 1B4HR28ZOX vehicle came in with abs and brake lite on.scan codes 35,36 rear sensor open,no signal from rwss,and 72 rom checksum error.replaced rwss,clear codes,start and it then it set codes 65 and 78.internal relay(cab),and brake foundation.tested brake sense switch fai...	View
	2011 Dodge RAM 1500 5.7L Instrument Cluster VIN: 1D7RV1CT8B Body shop inadvertantly cut a small gauge wire under the hood in the large connector in front of the power distribution box, small yellow wire with a black tracer. We think it was a bus wire. Now the front power windows are inoperative the instrument cluster s...	View
	1997 Ford Explorer Limited 5.0L Excessive Emissions, No Start, Poor Idle Quality, Cuts out, Misfire VIN: IFMDU35P1U hi everyone I have this 97 explorer here no start no code. put a set of plugs in it want to start it also pop though intake ,I have to spray quick start to get it started . once it is started it will run but very rich black smoke .it also run with intake hose ...	View
	2000 Ford E-350 Econoline XL 6.8L MIL Lamp on VIN: 1FTSS34S2Y Help!!! we have this 2000 ford e-350 news van that has got us to the point of being commited. This van only sets the codes at idle in gear. Long term trim goes to positive 12% and short term goes to 33.3%. Have done multiple smoke tests at different points aro... Trouble codes: P0171 (Bank 1 lean), P0174 (Bank 2 lean)	View
	2000 Ford Mustang 3.8L drive VIN: 1FAFP4442Y Hi, I'm not a trans guy. Got this mustang(mine) that trans will not initially engage drive gear. You can actually rev the motor in drive as if it were neutral. After a minute or two it engages and drives.. I tried a new filter and solenoids to no avail. Lookin...	View
	2009 Ford Focus S 2.0L unknown VIN: 1FAHP36N59 First noticed a hard pedal after the car had sat outside for a full day while at work. After several days I experienced the same thing early in the morning on one of the colder days so far this year. Since then it has happened on and off for a week or so at di...	View
	2001 GMC Yukon Denali 6.0L Poor Idle Quality, Hesitation VIN: 1GKEK63U11 I also have a just answer GM Tech help me, but with the recommendation of the TAC module; I installed the new TAC module and the original PCM (not new, but the original one) and I still have DTC's: P1125 and P1286. Originally I had DTC's: P0171, P0300, P1276,... Trouble codes: P1125 (p1286-), P1286	View
	2004 Infiniti G35 3.5L No Start VIN: JNKCV54E14 Hi There. We had to overhaul this engine because it ran out of oil. Now it will not start. It is a six speed standard. I am not sure whether the flywheel is on properly. The mechanic says that there are two dowel holes on the flywheel. They are at opposite sid...	View
	1994 Jaguar XJ6 4.0L windows,& tail lights VIN: SAJHX1746R please write back @ [...] thanks for the help	View
	1999 Lincoln Town Car 4.6L evap canister vent solenoid VIN: 1LNHM82W9X hello Techs, I have fuse 21 under hood shorted. There a lot on this circuit Heated oxyen sensors, Trans solenoids, Canaster vent solenoid,EGR vac reg, etc. After unpluging most all connecters to these items including the PCM. We found out that the two wires ru...	View
	2004 Nissan Pathfinder Armada SE 5.6L MIL Lamp on VIN: SN1AA08134 This armada came in with check engine light on. No drivebility issues. The code stored in memory is p1273.the freeze frame indicated that the code sets in closed loop at operating temp [...] c. Driving speed at 40km and rpm at 900. Both 02 sensors and fron... Trouble codes: P1273 (Air fuel sensor b1s1)	View
	2005 Nissan Armada SE Off-Road 5.6L No Start Howdy everyone. I have one that seems simple, but I want to see if you Nissan gurus think so. Car came to us from local garage. It would not start no spark no nothing. They did their testing and condemned the ECM. Towed to us and wanted the ECM replaced key pr... Trouble codes: U1000 (Can Communication Error Store In ECM)	View
	2000 Oldsmobile Bravada 4.3L Ck Eng Lite VIN: 1GHDT13W0Y Customer bring s car in for a nagging ck eng lite... No driveability symptoms or complaints,just the light. I understand from reading alldata that there are several conditions which may cause this...customer(and i) is reluctant to pull valve body and rebuild w...	View
	1992 Toyota Cressida 3.0L remote alarm system VIN: JT2MX83E3N OK, I've got a 92 cressida that lost it's remote. It has a TDSE system, but the TVSS owner's guide is useless to reprogram the remote. This Cressida DOES NOT have a reset button on the main ECM which is above the glove box, I removed it, there is no reset butt...	View
	2009 Toyota Prius 1.5L not run VIN: JTDKB2OU69 Hi, Toyota hybrid techs, I have a serious problem please help me.when I turn the ignition sw.ON all accessory turn ON but when i try to put it in drive or revers there is no change it just moves to "N" it will not switch to "R" or "D" but it does switch back t...	View
	2006 Volkswagen Jetta 2.0T 2.0L Poor Idle Quality, Surge, Cuts out, MIL Lamp on VIN: 3VWAJ71K46 Vehicle came in with the complaint that it felt like it was coughing. Upon initial test drive vehicle had a very long crank time and check engine light was on, and had a very bad hesitation, and felt like it was starving for fuel. Upon checking fo codes i foun... Trouble codes: 18725 (fuel pressure regulator 2 performance), 16471 (fuel rail/ system pressure- too low)	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2005 Audi S4 Cabriolet 4.2L trans/dr..shaft VIN: WUARL48H65 thanks for all replies,except (jake)were all helpful.determined it was trans related.googled audi/hoot noise,came up with service bulletin to reprogram trans computer.torque converter noise 3rd-4th shift.sent to audi dealer.thanks again bill.(also learned to g...	5
	2007 BMW 335i 3.0L Hid Lights VIN: WBAVB73547 Well thanks guys!! Long story short. Finally got the car back, did the quick and easy swap of the bulbs and they were find. Tested power and ground going in to control module, good. Nothing coming out. To double check it wasn't a command issue the tech swapped...	11
	2003 Chrysler PT Cruiser Limited 2.4L MIL Lamp on VIN: 3C8FY78G33 The pcm was the fix. The car didn't set the code after I completed the drive cycle after I connected new pcm and started the 1 trip showed the code I drove it and checked when I returned and there were no codes present. Thanks for the replies Trouble codes: P0141.	4
	1997 Dodge Ram 2500 5.9L Hesitation, Misfire, Backfires in exhaust VIN: 1B7KF26ZXV Thanks for all the help guys but sorry to say the truck is not fixed but what I can say is we checked the customers work and he did fine with parts and firing order and such I even scoped the secondary ignition with no problems found and put a vaccum gauge on ...	11
	2000 Dodge Ram 1500 Laramie 5.2L Poor Fuel Economy VIN: 3B7HC12YOY I wish I could say I got the customer to either switch back to his factory wheels(he has them at home)OR have his PCM reflashed for the 20" wheels and then REDO the mileage test, but I haven't been able to convince him to do it. I had a hard enough time expla...	30
	1990 Ford Ranger S 2.3L Charging VIN: 1FTCR10A7L SORRY SO LATE GETTING BACK THE PROBLEM WAS IGNITION MODULE. ALL IS WELL NOW. THANKS TO THOSE WHO REPLIED.	7
	2001 Ford Ranger XLT 4.0L MIL Lamp on VIN: 1FTZR15E31 THANKS TO ALL THAT REPLIED. I DECIDED TO CHECK ALL THE HOSES AGAIN AND FOUND THE LARGE EVAP VAPOR LINE WAS KINKED BECAUSE THE EVAP CANISTER WAS MOVED AFTER SPARE TIRE HOLDER WAS REPLACED . I MOVED THE CANISTER FORWARD TO REMOVE THE KINK. DROVE THE TRUCK ALL... Trouble codes: 174 (lean bank 2), 171 (lean bank 1).	22
	2003 Ford F-250 Super Duty Lariat 6.0L Parking lights, dash lights VIN: 1FTNW21P53 Thanks you for the replies. David suggested to look for moisture issues and replace the fuse box and GEM. No signs of moisture and I would having a hard time replacing those without knowing for sure that they were the issue. I had already inspected the bulbs a...	7
	2005 Ford F-250 Super Duty XL 6.0L No Start VIN: 1FTHX2547M Customer finally let me take is apart with the intension of replacing the HPOP,updating the fitting at rear of pump,insalling updated oil supply tubes to oil rail, and replacing the dummy plugs in the front of the manifolds. With the cover off of the oil pump ...	15
	2006 Ford E-350 Super Duty 5.4L Stall VIN: 1FBNE31L76 this has been a brainscrachter, the van has been driven time and time again and still no stall. i am not calling this one fixed but i will return van back to customer and have them drive to see what happens. thanks again to all for your help	7
	2002 Honda Civic EX 1.7L Srs Light On VIN: 2HGES26782 replaced the drivers side buckle and because the switch was giving bad readings. still had the srs light coming on intermittently. Replacesd the SRS unit and all is happy. Thank you for all the info.	8
	2006 Hyundai Santa Fe GL 2.4L No Start, MIL Lamp on VIN: KM8SB12B86 Appreciate the input I received, unfortuneately I was unable to duplicate the fault. Offered customer the option of replacing the sensor or waiting for another failure. Customer opted to replace the sensor and hope for the best. I would still like to understan... Trouble codes: P0338 (Crank position sensor signal high).	4
	1996 Jeep Grand Cherokee Limited 5.2L No Start, Poor Idle Quality VIN: 1J4GZ78Y0T First of all I want to thank everyone who replied, I replaced the ckp sensor with a oe part,no change but what I did notice was the magnet on the oe sensor was twice as strong as the aftermarket.After replacing the ckp sensor I rechecked each sensor at the pcm...	7
	2004 Jeep Grand Cherokee Laredo 4.7L parking brake VIN: 1J4GW48J04 Thank you all for the help. sorry it took me so long to reply. I found that this was a normal thing with these jeeps had three other jeeps in the past week come in and the same thing.	10
	2006 Jeep Liberty Sport 3.7L Misfire, MIL Lamp on VIN: 1J4GL48K76 AFTER 4 DAYS IS DRIVING, I WAS UNABLE TO GET THIS VEHICLE TO ACT UP. DID CHECK ENGINE COMPRESSION, OK. I DID SWITCH UP STREAM O2 SENSORS AROUND, SO IF THIS PROBLEM REOCURRS I CAN CHECK THE FREEZE FRAME DATA TO SEE IF ANYTHING CHANGE. CUSTOMER HAS PICK-UP THE V... Trouble codes: P0300 (Random missfire.).	12
	2002 Land Rover Range Rover HSE 4.6L steering VIN: SALPM16482 Thankyou to all your repies, we replaced the Panhard bushings with aftermarket parts and drove it we still had this shake. finally we took it to the dealer and they pointed out that there should me no movement in panhard rod bushings and i still had flex. we i...	14
	2004 Lincoln Aviator 4.6L Compressor VIN: 5LMEV68H14 Thanks for all your help everyone. I did install relays , am waiting for customer to drive vehicle a while to see if it is fixed. I will update post when i find out.	4
	1983 Mercedes-Benz 380SL 3.8L Misfire, #6 & #7 flooding out VIN: WDBBAA5A7D Thanks to all who replied. After following diagnostic procedures given by many of you, we found that the warm up regulator was our problem. We replaced the warm up regulator and vehicle is running fine.	11
	1999 Mercedes-Benz SLK230 Kompressor 2.3L retractable VIN: WDBKK47F4X Well I am embarrassed to say we had a switch in the rear compartment that was not plugged in-stupid on our part to have missed it but it is fixed finally-thanks to all who replied that it was probably one of the switches being open	9
	2004 Mercedes-Benz S430 4.3L Mechanical VIN: WDBNG70J94 I would like to thank everybody for taking the time to reply. Steve from Florida was huge help. This is a 722.9 trans and it must have been one of the first to get it. The vin does have to be coded to the valve body (equipment I do not have). I doubt that a va...	5
	2003 Mercury Sable GS 3.0L MIL Lamp on VIN: 1MEFM55S53 thanks for the replies i preformed the ford diagnostic flow chart for fuel cap light stuck on with no dtc and i have no voltage to black with white wire coming out of pcm. i am waiting for a used pcm.	8
	1996 Nissan Maxima GLE 3.0L Computer VIN: JN1CA21D9T This one seems to be fixed. I wanted to wait a few weeks before closing this. Thanks to all of you who replied, I ended up replacing the a/c relay, diode was built in. I also ran a new wire from the ECM back to the relay to be on the safe side. Called my cu...	6
	1973 Porsche 911 T 2.4L Mechanical VIN: 9113110439 Thank you for the information and I apologize for posting this without looking at it more. The lower warning light is always blinking and I assumed that was the alt light. The upper light was the one that stayed on until revving engine, duh. I am worried for m...	14
	1999 Saturn SW2 1.9L Stall VIN: 1G8ZK8273X FIRST AND FOREMOST - THANK YOU ALL SOO MUCH FOR INPUT!! CAHRGING SYSTEM IS "GOOD" (14.32v) LOADED WITH EVERYTHING BUT LIGHTS ON. MATT FROM N. CAROLINA ALONG WITH SEVERAL OTHERS HIT IT, WE DEFINETLY HAD VOLTAGE DROP AT GROUNDS - CULPRIT WAS SPLICE GROUND BEHIN... Trouble codes: P1583, P1583, P1640 (Quad driver module a).	9
	2003 Saturn Vue 2.2L engine control module VIN: 5GZCZ33D83 Wow, I can't believe it was something SO simple! Remember when you were first starting out in the field and the experienced tech in the shop told you to always START WITH THE BASICS!? Well, he was right! To recap; I did start with the basics in the sense of my...	9
	2004 Saturn Vue 2.2L No Start, MIL Lamp on VIN: 5GZCZ23D24 Hi to every one that try to help,unfurtunately none of the suggestions were any help, I even thou fuse for ecm/tcm is OK there was a cut in the orange wire that is live at all times wich harness lume clamp securing it to the intake manifold was cuttng in to it... Trouble codes: U2105 (Lost Comm With PCM).	8
	2006 Volkswagen Passat 2.0T 2.0L 1-2 Shift VIN: WVWAK73C46 AFTER TRYING THE SHIFT ADAPT RELEARN PROCEDURE MULTIPLE TIMES WITH NO SUCESS,WE REMOVED VALVE BODY INSPECTED FOR WEAR LOOKED GOOD, DROVE THE CAR A WEEK TO SEE IF IT WOULD LEARN ON IT,S OWN NO LUCK. BACK IN THE SHOP SCAN FOR CODES ONLY AN ABS CODE FOR RT FT SEN...	4
	1994 Volvo 960 2.9L no start, engine cranks VIN: YV1KS9519R Hey Guys! well, we have a car that NOW starts up every time and steers "like butter". Following the advice of many responders,We cleaned the small ground wire connections at the left side motor mount, as well as the grounds on the right frame and engine block ...	10
	2004 Volvo XC90 T6 2.9L No Start, Poor Idle Quality, Misfire, MIL Lamp on VIN: YV1CZ91H74 Well, I Believe It Is Fixed. Don't Really Understand Why But After Getting The Replies I Looked Closer At Bellhousing And Found 2 Empty Holes. 1 Below Starter And 1 Near The Top Of The Bell. Very Hard To See And The 1 Below Starter Was A Pain To Install. Anyw... Trouble codes: 280A, 3503 (Misfire At Least One Cylinder), 3553 (Misfire 5), 3563 (Misfire 6), 3543 (Misfire 4), 5200 (RPM Sensor).	9

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