Automotive Technicians Technical Discussion and Fixes for Sep 16, 2013

Join Now

Prev	Professional Automotive Repair Technical Discussions for September 16, 2013 International Automotive Technicians' Network (iATN) - Members Only	Next
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for All Makes and Models

	Help Request	Answers
	2006 Audi A6 3.2L MIL Lamp on VIN: WAUAH74FX6 Hello Audi Techs, This car came in with a BMW battery and fault codes. We suggested to the customer to put the proper battery in the car and register it to the car with the Ross Tech software. My question is can having the wrong battery in the car cause other ...	View
	2008 Audi A4 Quattro 2.0L MIL Lamp on VIN: WAUDF78E98 I'm having trouble finding any information for this code. My Snap-on Verus has no information. Alldata has nothing either. Any Audi techs out there have any help. Car seems to run fine. I cleared the code and it hasn't returned yet, but I bet it will soon. Trouble codes: P2187 (Bank one system too lean at idle. no signal/intermittent)	View
	1987 BMW 325i 2.5L Poor Idle Quality, Surge VIN: WBABB130XH Hello all, I've got this bmw here with a crazy idle issue. I do not have a scan tool to hook up to this car so all my testing is permeative to say it best. Idle ranges from 800-1600 rpm. Feels like vacuum leak but none were found. I jumped tps switch into idle...	View
	2007 Buick LaCrosse CX 3.8L Compressor VIN: 2G4WC58247 Customer states that ac intermittenly stops blowing cold. Customer says that compressor stop working as in the clutch wont engage. We cant duplicate the problem. There are no codes anywhere in the system. Just wondering if anyone has had any of the same condii...	View
	1991 Cadillac Seville 4.9L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1G6KS53B3M Vehicle came in running poorly. code 46 present. Not much in ALLDATA on code. test fuel pressure-good. Monitor o2 on both banks, found right bank running rich. Found inj pulse width on Rt bank cutting back to compensate.. Spark strong. EGR valve on affected ba... Trouble codes: 46 (Right to left bank fuel imbalance)	View
	1999 Chevrolet Corvette 5.7L MIL Lamp on, Temp gauge erratic VIN: 1G1YY22G4X Hello All... this vette came to me with a complaint of erratic Temp gauge and hesitation. Its setting codes P0117 and P1114. I tested the ECT circuits 718 and 410 from sensor to PCM by loading the circuits with a headlight... good and bright no problems with c... Trouble codes: P0117 (ECT sensor circuit low voltage), P1114 (ECT sensor circuit intermittent low voltage)	View
	2002 Chevrolet Cavalier LS 2.2L Brake line VIN: 1G1JF52412 In the steel brake lines to the rear drums there is a connector in each line What are they called. Could they be an inline proportion valve. One of these leak brake fluid. I think I have seen these a few times in the past but have never had to do anything with...	View
	2003 Chevrolet S10 4.3L clutch pedal VIN: 1GCCT19X43 Customer ruined transmission, replaced transmission, slave cylinder and master. clutch pedal is firm but has to be pushed to floor to get into reverse. We installed shim behind flywheel and problem is still there. there seems to be no air in the system. It wil...	View
	2005 Chevrolet Silverado 1500 4.3L Engine VIN: 1GCEC19X55 Drive vehicle after warm between 30-50 mph it has a low whistle/moan noise.sounds like it is from engine area. Checked intake and other related parts for leaks.. None found... Any help would be greatly appreciated... Thanks..	View
	2007 Chevrolet Silverado 3500 HD WT 6.6L Engine bad VIN: 1GCJK33667 Hello everyone. I received a 2007 Classic body style 3500HD LMM Duramax with a bad engine (sounds like a broken crank). Now here is my question, as I have not changed a duramax yet; The owner has located a low mileage complete engine from a wrecked 2009 C-5500...	View
	2009 Chevrolet Silverado 1500 LT 5.3L Surge VIN: 3GCEC23069 Truck has a hard surge(jerk) on light acceleration worse on slight grade low speed. No misfire counts on TECH2, fuel trim -6 or better when acting up.Does not seem to matter what gear trucks in. ANY THOUGHTS, THANKS	View
	2001 Chrysler Town & Country EX 3.8L no shift VIN: 2C8GP74L11 Vehicle came in with complaint of no shift. Appears to be in limp home mode, stuck in second. My auto xray was able to retrieve a po700 code, but my genisys evo could not communicat with tcm or inst. cluster although the dash works fine as does speedo. It does...	View
	1996 Dodge Neon 2.0L MIL Lamp on this car keeps putting the mil light on for code p0171, lean condition, it runs beautiful, has had a complete tune up, except for a fuel filter because there isn't one in its place is an accumulator. I have replaced the fuel pump assy, it had an exhaust manifo... Trouble codes: P0171	View
	2003 Dodge Stratus SXT 2.4L No Start, Surge, Cuts out, Stall VIN: 4B3AG42G43 Greetings and thanks in advance for reading this request. Vehicle came in on the hook. We have never worked on this vehicle before. Owner said it had died going down the road. Battery was dead from flashers left on. Charged battery and attempted to start. No d... Trouble codes: P0135	View
	2004 Dodge Ram 3500 ST 5.9L No Start VIN: 3D7MA48C74 Hey guys got a problem here which is causing me to loose sleep... This cummins diesel I have here fails to start...I am not a diesel guy at all...probably should not have taken this job on... but I did, no turning back now. Just finished putting injector seals...	View
	1988 Ford F-350 Custom 7.5L Stall VIN: 2FTJW35G2J customer has attempted to fix truck himself for the last year or two. finally gave up and brought it to us. we verified that the truck stalls when the rear tank is selected. we tested fuel system pressure and it drops off to 0 when the rear tank is selected. ...	View
	2000 Ford F-350 Super Duty XL 7.3L Poor power VIN: 1FDWW36F9Y This truck is right on the edge of ok. It is old enough to suspect injectors but I am confused by a few numbers and what is out there on IATN. My MAP sensor reads 14 koeo and at full throttle it will hit 17, 18. the EBP reads 17.9 koeo and it goes to 18.9 at i...	View
	2002 Ford Focus LX 2.0L No manual 1st gear, harsh upshift VIN: 1FAFP33P92 This vehicle has no manual 1st gear and a harsh upshift that I thought was 1-2 but according to scanner it seems to skip 2 and go 1-3. There have been no fault codes with this vehicle. I rarely post here but I'm at my wit's end! As indicated I have replaced th...	View
	2002 Ford Explorer XLT 4.0L fuel pump VIN: 1FMZU63E32 Thanks for any help you can provide. I'm 2 days from a vacation & i was hopping someone has seen this. This explorer was towed in as a crank no start. Turns out it has no fuel pressure. There was no power getting to the inertia switch. Find out fuse 26 which i...	View
	2005 Ford E-450 Super Duty 6.0L fluid VIN: 1FDXE45P05 Tis is a E450 motor home . The powersteering fluid will burp out reservoir random . This is a remote reservoir .Any ides would be great.	View
	2006 Ford F-250 Super Duty XLT 5.4L Cuts out VIN: 1FTSX20576 Thanks in advance... This truck is kicking mt butt.ive had it here for a few weeks now.truck loses power under load (interstate on ramp)but if you let up on the throttle a hair it picks the power back up normally.i have no trouble codes.i have replaced the mas...	View
	2002 GMC Savana 2500 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GTGG29R62 Vehicle was brought in with complaint of bucking/making noise. Drove, noted solid CEL in park, once in gear flashing CEL and notable misfire. IAT reading was initially boucing between -38f and 262f with short periods of somewhat normal functioning. Wiggle test... Trouble codes: P0112 (IAT Ckt low), P0113 (IAT Ckt high), P0300, P0327 (Knock sensor 1 signal short/low), P1111 (IAT Ckt intermittent high), P1112 (IAT low volts intake plenum switch)	View
	2002 Honda Accord LX 2.3L Misfire VIN: 1HGCG56472 car came in about three weeks ago with a miss cond. same three codes came up and it was missing at the time, replaced spark plugs and cured the miss. car came in today with a miss and the same three codes for misfire, replaced spark plugs , did not fix it. I h... Trouble codes: P0300, P0303, P0304	View
	2008 Honda Accord EX 2.4L vtc actuator VIN: JHMCP26858 this car came in with a rattle on a cold start .so i changed the cam gear/actuator on the intake cam.now im getting a cam correlation code.the car seems to run good but has a throaty sound when accelerating,like it is out of time.removed valve cover and timing...	View
	1999 Isuzu Rodeo LS 3.2L 1st VIN: 4S2CK58W5X ok tranny gus need help on this 99 isuzu, we rebuilted this trans and after a week came back because its shattering when in first gear only, we got it out opened it everything seems fine, put a new band,band servo, band solenoid,another valve body, and still s...	View
	2008 Jaguar XK 4.2L Radio VIN: SAJWA44B48 This car's radio will not operate on the AM frequency - no sound can be heard. The stations can be changed, but even on the strong channels there is no sound or static. The odd thing about all this is that the FM frequency channels work fine. The problem is en...	View
	2004 Mazda MPV LX 3.0L abs VIN: JM3LW28A44 we have codes C1165 RR speed sensor input cirquit fault and C1235 RR wheel speed sensor input missing. The light will be off and it will come on and then go off with the car idling in park. Driving down the road all my WSS read the vehicle speed. I also checke...	View
	2005 Mercedes-Benz E500 4Matic 5.0L Suspension VIN: WDBUF83J45 This vehicle was in a minor accident and the right front air strut was broken. I replaced it and now it will not charge up. I realize that I may have to tow it to the dealer for this, but do I really have to? Prior to replacing, I heard the strut attempting to...	View
	2004 Mercury Grand Marquis LS 4.6L coil VIN: 2MEHM75W34 scanned code 353 coil c primary secondary malfunction. coil melted. replaced coil and plug test ride ran fine. two days later towed in coil bad again blew fuse 8 replaced coil and fuse started 3 min running coil exploded and caught fire. checked voltage at coi...	View
	2001 Nissan Sentra GXE 1.8L Poor Idle Quality, Hesitation, lack of power VIN: 3N1CB51D91 Hi. I'm attempting to help and elderly neighbor of mine on my day off. I tried to hook up my scan tool but the Genesis is not communicating. Her son said they took it to the Nissan dealership and they said it was the fuel pump. He said they wanted $1300 to fix... Trouble codes: P0171	View
	1970 Porsche 911 S 2.2L Ignition VIN: 9110101766 looking for a vintage DUAL IGNITION MAGNETTI MARELLI DISTRIBUTOR CAP AND ROTOR for this vehicle dual ignition cap and rotor LOOKED ALL WEEKEND ON THE INTERNET ,, ANY HELP APPRECIATED THANK YOU RON CAR IS MODIFIED WITH CARBS NOT FUEL INJECTION	View
	1997 Porsche Boxster 2.5L MIL Lamp on VIN: WP0CA2986V car has 2 hard codes ,, i cannot find the evap vent valve i can not find any info on location of the vent control valve , removed the right front fender liner there is no valve on the canister just a blank for one / also there is no pressure transducer visib... Trouble codes: P0447, P0453	View
	1997 Saturn SC2 1.9L No Start, Stall VIN: 1G8ZG1270V after running for 5 to 10 minutes this car will die losing the ground to the fuel pump relay. After sitting for 5 to 10 minutes the car will start again. .have takenseveralmovies with thebtech lll but see nothing. The gn/w wire will hickup 5 to 10 seconds. Bef...	View
	2006 Toyota Avalon XLS 3.5L battery VIN: 4T1BK36B56 Battery drain... traced first to "Cut/DCC" fuse in under-hood fuse box... this fuse feeds three adjacent fuses in the under-hood fuse panel: "Dome", "Rad #1", and "ECU B"... drain will only cease by pulling ALL THREE of these fuses at the same time! Hard to th...	View
	2008 Toyota Prius Touring 1.5L MIL Lamp on VIN: JTDKB20U68 pump working good and system fully bled customer took vehicle. After 3 days of heavy driving approx 300 miles customer stated master caution lamp came on customer stopped the vehicle and had it towed we found code poa93 again scanned system and no issues found... Trouble codes: P0A93	View
	2001 Volkswagen EuroVan MV 2.8L Misfire VIN: WV3AB47011 I hope someone can lend a hand here. I am not too familiar with the VW's. Vehicle came in with the complaint of an intermittent misfire. I ran the vehicle for awhile and I was able to duplicate the problem. P0300 comes up and it seems 1 or 2 cylinders are mi... Trouble codes: P0300	View
	2002 Volkswagen Jetta TDI 1.9L MIL Lamp on VIN: 3VWSP69M92 I am having a problem trying to retrieve check engine codes on this car,as an ase certified master tech and a vw specialist with 28 years experience on these cars i got puzzled on this one... This car suffered an engine run away [wide open throttle with key of...	View
	2003 Volkswagen Passat W8 4.0L communication issue VIN: WVWUK63B13 We are looking for the next plan of attack. Here is some background info: has an aftermarket radio, we unplugged the radio harness from the factory connector, no change, no communication to ECM. We went to the obdII diagnostic connector and tested pin #4 for g... Trouble codes: P1635	View
	2006 Volvo S40 2.4i 2.4L Excessive Emissions VIN: YV1MS38226 Vehicle came in with a code P0420 Catalytic Efficiency Bank1. looking at Long and Short term fuel trims, found LTFT -10 and STFT around -1 to -0.8 never goes lean. Upon revving engine fuel trims get better and come back closer to 0 on LTFT. Almost like an vacu... Trouble codes: P0420 (Catalytic Efficiency Bank1)	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2008 Acura MDX 3.7L Accessories VIN: 2HNYD28458 well the car had a wire that was rubbed threw that was all corrosion and must have burned threw after the back words jump start. it was the white wire under the main under hood junction box. it powers the horn and brake petal switch thank you for the help	7
	1997 Buick LeSabre Custom 3.8L Stall VIN: 1G4HP52KXV Thanks for all the replies. It gave me a lot to think about. Many of you said the crank sensor was a strong candidate for failure but i could not make it cut out by tapping on the sensor. Not that this made it good but i thought i would investigate some other ...	29
	1995 Chevrolet S10 LS 4.3L ABS Light VIN: 1GCDT19Z0S Thanks for all the help especially to EDs auto for so much input, I had 2 issues main brake light was due to air in the rear system , customer never complained about poor brakes, but when I got the brake light to go out by disconnecting the pressure different...	10
	2005 Chevrolet Silverado 1500 5.3L Hesitation VIN: 2GCEK19B85 We replaced both knock sensors and the valley pan seals. The rear one was under water and the front one was full of oil. This did not help the hesitation. The fix was to replace the throttle body. Scoped tested it and couldnt see any dropouts or gliches but it... Trouble codes: P0332.	18
	2007 Chevrolet Trailblazer SS 6.0L Stability VIN: 1GNET13H47 The customer has decided to think about this for awhile. I got a lot of good help for this however the customer didn't want to proceed. The customer did add late in the process that he had the left front wheel bearing assembly replaced with a non oe part, go f...	6
	2011 Chevrolet Camaro LT 3.6L No Start VIN: 2G1FC1ED0B I got so many great responses I can't thank you guys enough. Special thanks to Michael from Alabama for sending me the article on Global A Electrical Architecture. The guy I buy all my dealer software from asked me to forward it to him. The car lot owner pur...	22
	2002 Dodge Ram 1500 ST 4.7L Valve Lash Adjusters VIN: 3D7HA18N02 OK FIRST THANK EVERYONE FOR YOUR HELP! I HAVE FOUND A FIX FOR THESE HEADS I WILL BE POSTING A COMPLETE OUTLINE ON HOW TO PERMANENTLY REPAIR THESE HEADS! I DROVE THIS TRUCK 300 MILES AND WAS NOT EASY ON IT PULLING 6000 RPM OVER AND OVER AGAIN AND HAD NO NOISE O...	9
	2004 Dodge Ram 3500 SLT 5.9L Hesitation VIN: 327MU48C34 THE ECM WAS THE WORNG PART NUMBER CUSTUMER DENIED THE FIX AT THIS TIME THE ECM WAS INSTALLED AT OTHER REAPIR FACILITY Trouble codes: P0477.	3
	2006 Dodge Durango Adventurer 4.7L Driveshaft VIN: 1D4HD48N66 Thanks for the replies. Non-dampner shaft is a design change as replies mentioned. No problem with install or performance. Due to lack of information from the Chrysler parts dept the information I received from the responding Iatn members was helpful. Iatn - g...	4
	2007 Dodge Caravan 3.3L Transmission VIN: 1D4GP21R77 Sorry, customer want to spend no more money on that dead car. All of your comments were usefull and apreciating. Thanks to all.	7
	2002 Ford Focus SVT 2.0L cylinder head replaced VIN: 3FAHP39572 After a two month stay this one is fixed!! Leak down confirmed 40% leakage to exhaust valves. Removed and returned head to machine shop. They tested the head and found all the exhaust valves were not seated correctly with the cams installed (but seat fine with...	16
	2003 Ford Ranger Edge 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTZR45EX3 Common thought was to check the cam timing. Since the trouble seemed to be coming from the left side we hooked up the vantage and compared cam/crank correlation to a known good waveform found on iatn. indeed the left cam was about 7 ckp pulses late. customer... Trouble codes: P0175 (Bank 2 rich), P0300 (Random misfire), P0304 (Misfire cyl 4), P0305 (Misfire cyl 5), P0306 (Misfire cyl 6), P0316 (Misfire upon start up).	24
	2003 Ford Expedition Eddie Bauer 4.6L No Start VIN: 1FMRU17W73 Thanks to all who responded, especially Alex from Georgia and Gerry from Ontario. The problem ended up being the PCM power relay. The fuse box terminal was slightly heat damaged, but with some cleaning and a new PCM power relay, vehicle starts and runs.It wil...	7
	2007 Ford F-550 Super Duty Lariat 6.0L Air Conditioning VIN: 1FDAW57P57 This truck had 2 problems, faulty electric fan clutch and the evap thermister sensor, replaced both and truck is working as designed. Thanks for all your input. Great as usual.	18
	2000 Honda Accord EX 3.0L Stall VIN: 1HGCG2255Y Well this one is fixed. I put a voltmeter on the back of the ignition switch and it dropped voltage for a split second, enough for it to die. I tried to wiggle the rear of the switch with no change, also did a voltage drop across the switch and thought I would...	13
	2001 Honda Civic LX 1.7L Torque Converter Lock up VIN: 1HGES165X1 It looks like I need to have another round with this one. But Don't have time at this moment. So, I have used Transgo Lube kit and Sonnax end plugs didn't fit mine. It looks like that hotter the weather the faster TCC will come on. It works but takes a...	10
	2001 Isuzu Rodeo LS 3.2L Gauge fluctuates from half to empty for no reason VIN: 4S2CK58W11 We took vehicle to dealer to re-program computer. The dealer had to pull computer and send in to Isuzu to re-program. They said it would take a couple of weeks so we are waiting. Will amend post once we get car back. Thanks guys!!	4
	1979 Jaguar XJ12 L 5.3L No Start VIN: J8VLV49310 Sleepless nights are over for a while. Found more wires melted together back behind the throttle body, repaired harness and still couldn't get it to run. Sourced used injector amplifier and used ecu and no difference. Installed a new contact trigger with no ...	8
	2001 Lexus LS430 4.3L Poor Idle Quality, MIL Lamp on VIN: JTHBN30F31 Thank you to all that replied. Ultimately, client did not want to pursue this issue any further, but here is what I know in addition to what has been stated already. James from CA & Kevin from Conn asked if timing belt has been replaced. Client purchased used ... Trouble codes: P1349 (VVT system malfunction bank1).	6
	2006 Mini Cooper S 1.6L Hesitation, MIL Lamp on VIN: WMWRE33506 Vehicle had bad gas and a plugged up fuel filter. Almost looked as though someone poured dirt into the fuel tank. Trouble codes: P0171 (System Lean B1).	7
	1992 Toyota Camry LE 2.2L Headlights VIN: 4T1SK12E6N Replaced headlight switch.Fixed the problem.The headlight switch grounds the circuit.Powers up the fuses.Thanks For all the help.	8
	1998 Toyota RAV4 2.0L transfer case, differential VIN: JT3HP10VXW Well I have had it in the air and in 2wd, the rear tires turn. When I hold the rears I can hear a ticking sound. So when It is back in here again I will be opening up the Tcase and checking the lock ring I believe it is not fully disengaged. I have had a fr...	3
	2003 Volkswagen Jetta GLS 1.8L all VIN: 3VWSE69M43 thanks to all who help out,special thanks to michael [...]. mike you hit it right on the head, thanks.	11
	2006 Volkswagen Passat 3.6 3.6L Oil pump VIN: WVWEU73C66 This vehicle needed an oil pump,the old one must have lost it's prime and its ability to develop pressure once drained.I HIGHLY recommend a new oil pump if you do one of these timing chain jobs. Thanks you to the many techs that gave good suggestions.Some idea...	15

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