Automotive Technicians Technical Discussion and Fixes for Jan 21, 2013

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	Help Request	Answers
	2002 Audi A6 Quattro 2.7L Fuel Leak VIN: WAULD64B72 It is not leaking at the o-rings, it is leaking in the body where a silver ball is located. Only leaks when it is cold (10 degrees or less) and only leaks for a couple minutes. When it does leak it sprays a lot of fuel and all six injectors leak. Can not belie...	View
	2002 BMW X5 4.4i 4.4L No Start VIN: 5UXFB33542 Thanks for any help in advance, we have an 02 BMW X5, 4.4L. that won't start only when cold, thankfully we are going to be very cold here in minnesota for a few days. The vehicle was in January 7th, we were unable to duplicate the issue at the time due to warm...	View
	2004 BMW 545i 4.4L oil pressure VIN: WBANB33514 This car drove into shop with customer stating that a red message was on the dash that said stop driving the car, engine oil pressure. Customer stated the message was intermittant. We removed the oil pressure switch and attached a mechanical gauge, reads zero ...	View
	2004 BMW 325i 2.5L Hesitation, Stall, Misfire, MIL Lamp on VIN: WBAET37494 This BMW came in with a complaint of no power and when accelerating car it will lose power. We road tested the car and verified the customer complaint. No power, misfires on acceleration, and goes into limp mode. We retrieve the above codes. We went to check t... Trouble codes: 2962 (Oxygen Sensor Dynamics), 28A2, 27C3, 91 (Can Torque Reduction), 37 (Gear monitoring 5), 5E19	View
	1995 Buick Regal Custom 3.1L Fuel Pump VIN: 2G4WB52M9S Fuel pump will not energize with key on, when you apply voltage to fuel pump test terminal, fuel pump is energized. Fuel pump will receive voltage thru oil pressure switch during extended crank times and vehicle eventually starts. After removing fuel pump rela...	View
	2003 Cadillac CTS 3.2L MIL Lamp on VIN: 1G6DM57N63 Ok '03 CTS with p0336. I have put multiple crank sensors in this thing(a/c delco sensors). Code resets, not right away but prob takes a few days to reset. I did a wiggle test to check harness, seems ok. I checked crankshaft endplay which seemed to be ok. The c...	View
	2000 Chevrolet Venture 3.4L Stall VIN: 1GNDU03EXY have done tons of work on van. new module,coils crank shaft sensor map, mass air flow sensor, upper and lower intake gaket.plug, wires. this thing bogs and then dies, coughs. no codes other then inter. u1040. no misfires. put spark tester on it after it dies, ... Trouble codes: U1040	View
	2004 Chevrolet Malibu LT 3.5L Left Rear Seat Belt VIN: 1G1ZU54864 How do I remove the rear window trim panel so I can access the seat belt retractor?	View
	2005 Chevrolet Tahoe LS 5.3L code C0327 VIN: 1GNEK13TX5 Need some help with this on guys. This tahoe sets a code C0327 interm. May be fine for a few days and then service 4wd message wil show up and code C0327 set. We have serviced tons of these and I have only replaced 1 encoder motor, and a ton of switches on the...	View
	2007 Chevrolet Suburban 1500 LT 5.3L Rear liftgate Got one for you Good Wrench dealer guys.Replaced the rear liftgate module in this '07 Suburban and programmed with my Tech2. Liftgate will work when commnded by Tech2 but will not work by the button. Scanner data shows the module sees the button properly. If y...	View
	2008 Chevrolet Silverado 1500 WT 5.3L base brakes VIN: 2GCEC13J08 thanks in advance! hi vehicle came in shop with noise in rear end . found rear brake shoes worn and brake drums out of round .resurfaced drums and replaced brake shoes and every thing was ok. truck returned at a later date customer was complaning about brake p...	View
	2002 Chrysler Voyager LX 3.3L Lights VIN: 1C8GJ45352 Hello IATN, Once again, I come asking for some help. This regarding the charging/electrical/lighting of this beautiful little Chrysler minivan. This vehicle belongs to a very good friend who uses it as a delivery vehicle for his business. Like any fleet ve...	View
	2008 Chrysler PT Cruiser Touring 2.4L Failsafe VIN: 3A8FY58B18 vehicle came in with p0883-TCM power input high, when cleared it comes back immediately. No TIPM or PCM seperate codes are present. When vehicle got here it would also drain the battery overnight, this happened at least 3 nights in a row. After going through...	View
	2008 Chrysler PT Cruiser Touring 2.4L Misfire, MIL Lamp on VIN: 3A8FY58B88 The car misses at idle, but runs smooth at 1500RPM and above. Misfire counter shows miss on #4 at idle, but not above 1500 rpm. Adaptive short and long readings total about 9 at idle, go to 2 at 1500 rpm. ST125 shows a great spark at idle. Plugs are new. A smo... Trouble codes: P0304 (Miss at number 4)	View
	2003 Ford Explorer Postal 4.0L No Start, Poor Idle Quality VIN: 1FMZU72K23 Ok so this car originally had a rough idle. We found low compression in one cylinder (apprx 55 psi in one hole onle, the rest were 120). We took valve cover off and found the cam to have badly worn lobes. Removed and replaced cam aswell as the associated rocke...	View
	2003 Ford F-250 Super Duty XLT 6.0L f2-22 VIN: 1FTNX21P93 Truck towed in. was at highway speed and shut off.found f2-22 blown. no comm w/pcm. replaced fuse fired up.scoped power draw and is max 6.5amp turning on (20 amp circuit). road tested 7 miles and ok, customer picked up and made it 50 ft and blew again. only co...	View
	2004 Ford F-550 Super Duty Lariat 6.8L Cuts out, Stall VIN: 1FDAF56S24 This all started at the Exh. shop. Installing new Cat, to get the Tk. on the road. Engine would start, but no throttle response. It will die with any throttle. Will restart. I gave it a lobotomy, and that got me going, back to the shop. Exh. welder told me the...	View
	2004 Ford Escape XLT 3.0L Mechanical VIN: 1FMCU93104 This one came in with a burned through EGR valve. A hole through the aluminum housing. Other than that the customer complained of no other problems before the valve failing. We put another valve on, checked for codes - there were none and never turned the chec...	View
	2005 GMC Yukon XL 1500 SLT 5.3L brake pedal VIN: 1GKFK16Z95 when applying brakes slow brakes work fine, but if you push the pedal down fast it feels like the pedal pushes back at you for a second and then work fine. have pulled abs fuse to rule out the abs system. the problem will happen even if your just idling in par...	View
	2006 GMC Savana 3500 6.6L Hesitation, Cuts out, MIL Lamp on VIN: 1GTHG352X6 truck came in with code- after three test drive got van to act up- at 65 -70 under load the van lost preforance pedal to floor no power- computer taking fuel away as desiered. found the turbo van control solinoid sticking at times- replaced- test drove no prob... Trouble codes: P0234	View
	2007 GMC Sierra 1500 SLT 5.3L stereo VIN: 3GTEC13J17 stereo turns on sound only comes from tweeters till it warms up then works fine not sure what may cause this but the stereo will work in all modes durring the time it only makes sound out of the tweeters any help would be great thanks larry's auto	View
	2005 Honda Pilot EX 3.5L Excessive Emissions, MIL Lamp on VIN: 2HKYF18415 Truck came back in with complaint or CEL and stalling and no start a couple of times after timing belt job just done. Of course it everything was fine during my test drive after I initially completed the job... Scanned and found P0340 only. Inspected and found... Trouble codes: P0420 (catalyst failure bank 1), P0430 (catalyst failure bank 2), P0340 (CMP sensor signal fault)	View
	2005 Honda Pilot EX 3.5L Excessive Emissions, MIL Lamp on VIN: 2HKYF18415 Truck came back in with complaint or CEL and stalling and no start a couple of times after timing belt job just done. Of course it everything was fine during my test drive after I initially completed the job... Scanned and found P0340 only. Inspected and found... Trouble codes: P0420 (catalyst failure bank 1), P0430 (catalyst failure bank 2), P0340 (CMP sensor signal fault)	View
	2006 Honda Civic LX 1.8L Under Dash Fuse Box VIN: JHMFD16796 I started checking around and found out that under the dash there is a fusebox the check all the relay and found out that the relay is parmanently closed the i replace the relay then try to connect the battery head and all the light comes up again. I remove th...	View
	2005 Hummer H2 6.0L Ignition Lock Cylinder VIN: 5GRGN22U65 Ign key will not release all the way to the off position at times. I can hear a solenoid in the steering collumn that actuates when the shift lever button is RELEASED, allowing the key to be removed. Information system has 'nodata' in the starting or steering ...	View
	2004 Infiniti G35 3.5L MIL Lamp on VIN: JNKCV54E84 Howdy Y'all. This infiniti G35 coupe continues to set code P1273 I have replaced sensor with a Denso and walker. Still the code comes back after about 2 days driving. The freeze frame shows the vehicle to be moving and under moderate load. the freeze frame als... Trouble codes: P1273 (a/f Sensor b2 s1)	View
	1986 Jaguar Vanden Plas 4.2L Hazard lighting VIN: SAJAY1343G After replacing the hazard switch, the hazards worked normally and the signals worked on both sides. What was not normal was that the left turn signal lights both the arrow and the hazard blinker in the center of the gauges. When the hazard switch was replaced...	View
	2000 Jeep Grand Cherokee Laredo 4.0L power windows,dash gauges,security light VIN: 1J4GW48SXY Hi, Hope someone can help with this one.This vehicle initially came in for the security light (key symbol) coming on after vehicle was running.Replaced skim module with new keys and had reprogrammed.Problem still there.Then noticed while driving that the secur...	View
	2001 Jeep Cherokee Limited 4.0L Misfire, MIL Lamp on VIN: 1J4FF68S31 Vechile came in previously (about a month ago) with p0301 and p0201 codes. Checked fuel psi.,good, perf complete tune up. Plugs fi. Cleaning, fuel filter. Vechile still had misfire and #1 misfire code. Checked wiring, inj.,switched inj 1,2. Cleared codes. Test... Trouble codes: P0202 (Cyl inj circut)	View
	2004 Mazda Miata 1.8L No Start, Engine cranks okay VIN: JM1NB353X4 Hello fellow technicians. This is my first post to IATN. This vehicle was towed into my shop for a no-start, engine cranks situation. The owner left 2 ignition keys with me (both are original, OE keys) and neither key will start the vehicle. The battery had a ... Trouble codes: P1602 (Immobilizer Unit-PCM Communication Error)	View
	2004 Mazda 6 S 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1YVHP82D54 This vehicle has random misfire when it reaches operating temp. The front cat had to be replaced. It was glowing red and had come apart and was clogged. The misfire is still present. The new cat also glows read indicating raw fuel is still passing through the ... Trouble codes: P0300 (Random Misfire)	View
	1973 Mercedes-Benz 280 2.8L Poor Idle Quality, Poor Fuel Economy VIN: 1080862098 Can anyone help with the set up of the throttle linkages for the mechanical fuel injection on this vehicle. The vehicle came in with the fuel system having been repaired by another shop and was in a very sad state. We have got the idle mixtures down to an acce...	View
	2005 Mercedes-Benz E320 CDI 3.2L Engine VIN: WDBUF26J55 This car came in on the hook, would not start one day. No previous symptoms. Since no start, has been sitting in the customers garage for 3-4 months. After a fully charged battery the starter is turning at the right RPM, but the engine doesn't even try to star...	View
	2001 Mitsubishi Eclipse Spyder GS 2.4L Cuts out, Stall VIN: 4A3AE35G11 Hello, This 2.4 L Mitsu Eclipse keeps intermittently bucking, hesitating and sometime stalling. I have only caught a very brief misfire feel but otherwise perfect. Has recently triggered MIL code P0340 for cam sensor. Thing is the car runs just fine with cam ... Trouble codes: P0340	View
	2003 Pontiac Grand Am SE 3.4L Injectors not opening VIN: 1G2NF52E33 I have a 2003 Grand Am GT 3.4l V6 in the shop. Customer stated the car would not start. We checked the plug wires and they were fine. We sprayed carb cleaner into the throttle body and the car would start. We then replaced the fuel pump and filter, thinking th...	View
	2002 Volkswagen Passat GLS 1.8L No Start VIN: WVWPD63B42 Tow in, crank no-start. Instrument cluster lights up although radio display is inop. No spark detected. Tested for power at the ECM relay and measured voltage on terminals 30 and 86a but I do not get a ground signal from the processor during crank to energize ...	View
	1990 Volvo 240 2.3L No Start VIN: YV1AA8846L Well have this Volvo here with a no start,check for spark and has it,check fuel presure and its at 110psi specs are 36-42 way to high.Has inj. plus.Well this car has two fuel pumps. and have change the fuel presure reg and no change.Anyone have you ran into th...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2003 Audi A4 Cabriolet 3.0L Axles VIN: WAUAT48H73 It seems that there was an overwhelming concensus to replace the axles as a pair. I called my local European parts specialist and ordered reman axle shafts for two reasons: 1-the customer can't support the Audi factory parts pricing and 2-many of you said not ...	21
	2005 BMW 645Ci 4.4L air intake syatem VIN: WBAEK734X5 Thanks to all who helped. The code was a intake air motor code. After learning this, I did a visual on wiring to motor at rear of intake manifold not completely snapped together, my mistake, did not connect it good enough during valve cover r&r. snapped toge...	7
	2003 Chevrolet Trailblazer North Face 4.2L Dome Light, Radio, Power Locks VIN: 1GNDT13S73 Well, I finally punted because I just couldnt spend anymore time on this one. I wish I could have updated post more than once. The door inputs were ruled out as a cause of problem and so was the radio. Sent car to dealer who reported to me that the airbag modu...	19
	2002 Chrysler Town & Country EL 3.8L Doors VIN: 2C8GT64LX2 well, we really never fixed the problem, customer had enough of his vehicle, declined any further repairs and decided to trade it in for a new model. I do think it was the wiring under the door. sorry for the late update and thanks for all the replies	13
	1989 Ford Mustang LX 5.0L All Shift VIN: 1FABP44E9K i want to thank everyone for their help, it turns out it was the transmission, has to be rebuilt, thanks again for all your help	22
	2001 Ford F-550 Super Duty Lariat 7.3L injectors VIN: 1FDAW56F01 do to low compression on engien the customer has put a stop to the repair needs motor	14
	2004 Ford Freestar 3.9L interrior lights VIN: 2FMZA50624 Thanks to all that replyed. Will all my testing I'm certin the problem is in the sjb. But since the sjb requires dealer programing and with the cost of the new box my customer decided to go with out interior lights at least for now.If he has this done at a lat...	5
	1997 Geo Tracker 1.6L Code VIN: 2CNBE1865V unfortunately When I posted this the customer picked up and has not brought back yet. I will add fix as soon as i get car back. although thank you for all info. Trouble codes: P0400.	8
	2003 GMC C5500 Topkick C5C042 6.6L speed governed at 35 VIN: 1GDE5E1173 The truck is fixed except for the radio locking. The speed limiting was the same problem we suspected in the first place but it wouldn't take the new axle ratio and revolutions per mile info until attempted a few times. We got our hands on a Tech 2 and did the...	5
	2003 GMC Envoy XL SLT 5.3L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GKET16P93 Thanks for all the help. It turned out to be intake gaskets after all. I never found leak before disassembly even after smoking intake and spraying an entire can of carb cleaner around intake ports. Thanks again. Trouble codes: P0171, P0174, P0300.	31
	2007 GMC Acadia SLE 3.6L ride VIN: 1GKER13747 Thanks for all your help. Your ideas gave me confidence to have the transmission replaced & all the problems were gone. One note to mention, i didn't realize the tcm is internal to the transmission & is not programmed as i found out when i cranked the engine ...	10
	2007 Honda Odyssey LX 3.5L Audio FM VIN: 5FNRL38217 Thank you all for your replies. The owner did not want to peruse/diagnose the problem further. Hopefully it does come back one day when he wants to figure it out. There was nothing really on iATN that I could find on this issue so hopefully the replies and ide...	12
	2007 Jeep Patriot 2.4L compressor clutch VIN: 1J8FT28W17 thanks to all who said alt. the funny thing is if you go to orielly the pulley is bigger and you need a longer belt. if you go to auto zone which i was forced to do as carquest did not have one till when ever,the alt.is reman in usa and has the correct size p...	27
	2004 Kia Rio 1.6L blower switch connector VIN: KNADC12534 We ended up repairing the wires and plugging them in individualy as were unable to obtain a connector both new and used.	9
	2009 Subaru Forester X Premium 2.5L Clutch VIN: JF2SH63639 I would like to thank all the people that took time out of thier busy day to help me out. We put a used trans in this car and it was fixed. Found fourth gear synro bad Once again thank you	11
	2001 Toyota Corolla CE 1.8L Poor Idle Quality as everyone said to check the throttle cable it was fine. i tested the tps. it was at .5v at idle and 9.8 percent on the scan tool. i smoke the car no vacuum leaks. trims at 0. so i think the iac is stuck is open (iac reading 25 percent) aith a/c on the rpm ...	35
	1996 Volkswagen Jetta GLS 2.0L Unknown VIN: 3VWSA81H5T THANK EVERYONE EVERYTHING WORK-OUT GOOD WITH THESE LOG-IN CODES	5
	2003 Volkswagen Jetta TDI 1.9L Horn VIN: 3VWSP69M23 Vehicle has not returned for further diagnosis. I am fairly sure Gene had the right answer based on personal experience which was a door latch switch problem triggering the alarm system to alert the driver of a security system fault. I did notice the interio...	8
	2004 Volkswagen Touareg V8 4.2L starter VIN: WVGCM67L24 First thank you to those that replied and offered help. This vehicle is going to the dealer for a second opinion. I was able to determine that there were no shorts supplying voltage to start circuit. After vehicle starts there is no voltage on the starter wire...	3
	2006 Volkswagen Golf GL 2.0L Cuts out, Stall, MIL Lamp on VIN: 9BWFL61J66 Based on the information I received and the symptoms the car was giving, I replaced the fuel pump relay only. I never did see it fail, but given the circumstances it seemed the most likely culprit. Customer has been driving the car for almost 1 full month no... Trouble codes: P0420 (catalyst efficiency low bank 1), P1539 (clutch switch signal implausibility), P0102 (MAF signal low), P0261 (p0270- 1 - 4 injector short to ground), P0270, P0031, P0037, P1425, P1435, P1472.	8
	2004 Volvo XC90 T6 2.9L MIL Lamp on, Abs, icm, tcm VIN: YV1CZ91H44 I figured out was was wrong about 1 hour after i posted this.It was a bad cem Central electrical mod. It is the common between all the controllers. Also supplies can communications. Thanks for your help. Trouble codes: U0002.	14

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