Automotive Technicians Technical Discussion and Fixes for Sep 25, 2012

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	Help Request	Answers
	1999 Acura CL Premium 2.3L ABS Module VIN: 19UYA3256X ABS light on (amber). Code flashes number 17, left rear wheel speed sensor circuit fault. Previous testing found open/innop left rear WSS. Resistance of old unit was 450,000 Ohms. Spec is 450 - 2,000 Ohms. Now produces adequate AC millivolts, identical to righ...	View
	2002 Audi A6 Quattro 3.0L Poor Idle Quality, Surge, Stall, Misfire, MIL Lamp on VIN: WAULT64B12 resets p0341 an 346 almost immediately after start up, performed cps checks per code direction.verified voltage, ground,sensor signals at ecm with labscope,performed output test to cam adjuster solenoids with scanner while verifying audible clicking with labsc... Trouble codes: P0341, P0346	View
	2003 Audi Allroad Quattro 2.7L ride control VIN: WALYD64B63 This vehicle has a broken air line to the right front air shock/spring. It was involved in a collision. It is broke close to the spring [in sight].The air compressor is underneath the vehicle just inside the left rear tire. Any input on replacing or even bette...	View
	2004 BMW 325i 2.5L Electrical VIN: WBAEV33424 Vehicle towed in for intermited no start performed scan test and found no codes and could not find any diagnostic procedures for immobilzer test. but when looking at key functions found the following: 12 - Key #2 incorrect random code 01 Key #1 incorrect pass...	View
	2006 BMW 325xi 3.0L No Start VIN: WBAVD13536 I have a 06 325xi that was towed in from the dealer, it won't start.It have the remote key when you insert it in the slot the srs light will come on in the ipack and the radio lights up. I have checked codes and fuses all are ok. I checked codes using my autob...	View
	2000 Chevrolet K3500 5.7L 4x4 indictor VIN: 1GCHK33RXY The 4x4 indicator lights will not come on when the transfer case is shifted into 4 high or 4 low. We have checked and replaced the selector switch and have check the bulbs and fuses. Anything that i am missing i have power at the switch but the indicator light...	View
	2007 Chevrolet Colorado LT 3.7L wont start VIN: 1GCDS13E87 Vehicle will start n run just fine for a day or two thn suddenly i open key security light will b flashing n truck wont start, i relearn the pass lock key again n it starts just fine. Theres times i have to do this 3 times a day, hope u can help n always thank...	View
	2009 Chevrolet Express 2500 4.8L 1-2 shift VIN: 1GCGG25C89 Road tested vehicle and noticed intermitently the 1-2 shift on normal acceleration at times would harshly shift just like early trans with broken accumilator spring.	View
	2004 Dodge Ram 1500 ST 5.7L Poor Idle Quality, Stall, Misfire VIN: 1D7HU18D24 Vehicle came in running poorly. Found number one bank dead at idle-1,3,5,7 and firing just off idle. With only the P0300 dtc. LT fuel trim for that bank up ten percent with short term normal both banks. Performed battery disconect and ran fine during test driv... Trouble codes: P0300 (Multiple misfires)	View
	2004 Dodge Ram 2500 ST 5.9L Unknown VIN: 3D7KU28C34 Just looking for some information here. We have a local law enforcement vehicle whose driver is interested in being able to raise the rpm while stopped. I have seen some dodge trucks that you can do this with the cruise control on the steering wheel, and I can...	View
	2006 Dodge Ram 2500 SLT 5.9L 2 Separate Problems VIN: 3D7KS28C96 This vehicle had an ecm replaced previously, and now it has a code P0633 - Skim Secret Key Not Stored. Engine runs fine, but it has the code that I would like to eliminate. I have a Star Mobile and Star Scan for this truck, but cannnot find any way to input th... Trouble codes: P0633 (Skim Secret Key Not Stored)	View
	2008 Dodge Ram 3500 SLT 6.7L overhead display VIN: 3D7MX39A28 have tried to reset over head display by turning key to on position and stepping on pedal three times fails to reset	View
	2001 Ford F-150 Lariat 4.6L speedo VIN: 1FTRX18W81 Looking for advise on next step, not sure if I can do any further testing,I think signal is sent over network and everything else is working so wire betwwen pcm and gem should be ok? I think that the concern happened after flashing of pcm. any help is greatly ...	View
	2002 Ford Taurus SE 4-Valve 3.0L No Start VIN: 1FAF953U62 well this car is a no start with no fuel pressure.there is no power going to my fuel pump.i have checked inerita switch and it is ok.i replaced fuel pump module per alldata.and i also have no communication from computer to my scanner.any help. Trouble codes: 1233 (fuel pump module)	View
	2004 Ford Freestar Limited 4.2L radiator fan VIN: 2FMDA58204 cust concern is that can here noise from engine compartment intermittenly, found noise is high speed fan, cust purchased vehicle new and has never heard noise before about a year ago. low and med speed fans come on while sitting, hi speed fan comes on when dri...	View
	2006 Ford Explorer XLT 4.0L drivability VIN: 1FMEU63E06 the vehicle came in with timing component noise in the front chain. i pulled the front cover and oil pan to replace the front jackshaft tensioner and balance shaft tensioner. both had come apart and were in the pan. set the timing with the camshaft timing kit....	View
	2006 Ford F-350 Super Duty XLT 6.0L Poor Idle Quality, Surge, MIL Lamp on VIN: 1FTWW31P46 Hey All, Struggling a bit with this one after what I thought was a pretty clear cut job and would appreciate any insights. Vehicle was towed in (30min after private purchase) as a quit while driving and no start condition, batteries fully discharged. MULTIPL... Trouble codes: P2284	View
	2007 Ford F-150 XLT 5.4L Timing Chain Marks VIN: 1FTPW14V47 Vehicle came in for broken exhaust manifold bolt on #1Cyl. We ended up removing the passenger side head. Machine shop drilled out the bolt and the head's back. However, customer wants to put in a new timing chain, guides, tensioners,etc. My technician made the...	View
	2008 Ford Focus S 2.0L Poor Idle Quality, Surge, Stall VIN: 1FAHP34NX8 vehicle hunts for idle,no vacuum leaks found,fuel trims normal. problem is much worse with ac on and blower on max ac.	View
	2001 GMC Sierra 2500 HD SL 6.6L tcm VIN: 1GTHK29171 mistake? upon the advice of a local auto wrecker i purchased and installed a 04 vin 1 allison tranny(used) in the above 01 truck.when we went to install the coolers lines i said oops.reached out to my transmisson guru who said there is a g solnoid added in 03....	View
	1996 Honda Civic LX 1.6L compressor VIN: 1HGEJ6500T This is unbelievable. Car came in with A/C inopp complaint. Checked pressures - all of the R134A leaked out. Pressure tested system - no large leaks found. Evacuated and recharged system, but compressor won't engage and condenser fan doesn't come on. When push...	View
	2002 Honda S2000 2.0L MIL Lamp on VIN: JHMAP11482 Car came in with rough idle. Found valve guides worn out. Had head rebuilt, put back together, now idles smooth. As long as the car idles, everything is fine. If you rev it over 3000 rpm, the check eng. light comes on, and the rev. limiter starts kicking in al... Trouble codes: P1361 (TDC 1 sensor intermittent)	View
	2003 Hummer H2 6.0L 1-2 Shift VIN: 5GRGN23U23 Hey Guys, So Ive been scratching my head for the last few hours on this one. Vehicle has 4L60 Trans. Vehicle seems to be stuck in first gear. Reverse works fine. Cannot manually select and get vehicle into 2nd or 3rd gear. Did notice that when I manually place...	View
	1999 Jeep Wrangler Sahara 4.0L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, o cruise Control VIN: 1J4FY49S1X This Jeep was serviced at my shop about 3 weeks ago with the same symptoms. Poor Idle , Surges and sometimes cuts out. No codes at all. We have noticed this time that the cruise control does not operate. Also while test driving vehicles (we don't want to repla...	View
	2002 Jeep Grand Cherokee Limited 4.7L power steering VIN: 1J8GW58N92 Hey everyone, thank you for taking the time to look at this. This Jeep is really kicking my butt. It came in with a complaint of no assist when turning left only. Test drove and verified this is in fact what it was doing. I ended up replacing the steering box,...	View
	2004 Jeep Grand Cherokee Laredo 4.0L extended crank cold VIN: 1J4GW48SX4 Hi all, I have the Jeep here that has an extended crank only when cold. It will start right up the first time and then if you shut it off and wait a couple seconds to re-start it has the extended crank. Coolant temp sensor reads normal as does IAT. There are ...	View
	2006 Kia Sorento EX 3.5L Engine and coolant VIN: KNDJD73356 This car is having a bad problem overheating I have check all that I know too I work on heavy desiels more than this smaller stuff so ill day what I've checked and if I missed something could you just let me know thank you. It started running hot one day so th...	View
	1998 Lexus GS300 3.0L oil leaks from the cam gear intake side VIN: JT8BD68S3W after been replaced for second time timing belt because it got weat of oil we remuve the top part of the timing cover and see that oil keps laeking from posoble bank 1 or (left side/driver side)of the front cam gear the one that had the vvt-i sensor in top oil...	View
	2002 Lexus LS430 4.3L No Start VIN: JTHBN30F32 Vehicle towed in for no start. The battery checks good. No corrosion, good connections and good voltage. No voltage at Fuel Pump relay. We have voltage at C/Opn Relay but does not click when ignition is turned on or cranking. All fuses are good. Seems like I n...	View
	2007 Mazda 3 i 2.0L cooling fan Sorry about the no VIN guys, IATN wouldn't let me procede with it so I had to go this route. The cooling fan on this Mazda 3 stays on after vehicle shutdown until the battery dies. The computer is not calling for the fan to run (duty% = 0). I was wondering if ...	View
	2003 Mercedes-Benz C240 4Matic 2.6L cooling fan VIN: WDBRH81J83 electric cooling fan running full speed with ignition on. wiring looks ok . checked wiring for shorts at fan assembly ok. suspect fan control module , can't find module for more test. code p2073 in system. fan goes off with ignition off. thank you, barry	View
	2005 Mercury Mountaineer 4.0L Torque Converter VIN: 4M2ZU86E65 Cust's complaint was transmission and overdrive lights came on. Battery light came on with the turn signals. Found code P1744, TCC performance/circuit problem. No complaint of stalling at a stop, ect. TCC seems to working fine. Found the Alternator single wire...	View
	2006 Peugeot 206 CC 1.6L Cuts out, Misfire, MIL Lamp on Hi Guys, really got my self a beauty,Peugeot 206 CC feb 2006, vehicle starts runs drives around town all day, Highway driving approx 80 Km Or about 50 miles, without warning Engine management light will come on a notice in power loss, two signals come up on th... Trouble codes: P0550, P1336, P1337, P1338, P1339, P1340	View
	1977 Porsche 911 S 2.7L injectors VIN: 9117201516 I am playing with one of these right now and requested info on the system from AllData's archieves. The main thing this car does is multiple backfires. The air box was blown apart and i installed a new backfire valve. Now the air box has blown off the intake ...	View
	2001 Saturn L300 3.0L No Start VIN: 1G8JW54R31 Initially the car came in 2 weeks ago for a no start. We diagnosed the problem, replaced the fuel pump with a Delphi unit. Engine started. Customer paid bill and left. Less than 48 hours later, she called, engine does not start. We towed it back and upon diagn...	View
	2001 Subaru Legacy GT Limited 2.5L High temp Car was driven for 25 miles up a slight grade the temp would climb, coolant recovery bottle would dump coolant. After replacing both head gaskets, radiator,and thermostat, Car now shows 3/4 on the gauge at idle after driving a couple miles, and here is the wei...	View
	1997 Toyota 4Runner Limited 3.4L Converter Lockup VIN: JT3HN87R5V Hello IATN! Today im looking for a little bit of help with my personal vehicle, I bought this truck cheaply with 180K, It had been neglected of maint. but was in otherwise great condition and I really love the thing! Once things slowed down in the shop I repl...	View
	1999 Toyota Tacoma DLX 3.4L Stall VIN: 4TAWN72N8X When cranking, the engine starts firing 1~2 seconds and stalls immediately. The computer has a code only, P1300 “Igniter Circuit Malfunction." Checked spark, ignition coil resistance, and fuel flow. Checked 3 wirings IGT1, 2, 3, and IGF between the igniter and... Trouble codes: P1300 (Igniter Circuit Malfunction)	View
	2007 Toyota Camry Hybrid 2.4L master cylinder VIN: 4T1BB46K07 This hybrid Camry persitantly makes a strange "hoot" noise when stepping on brake pedal even stationary with all power off. Listening w/stethoscope, noise appears to be coming from a hydraulic line between master cylinder and accumulator/ABS module on R/F of ...	View
	2003 Volkswagen Jetta TDI 1.9L Mechanical Hi Guy's, this is my first TDI timing belt. Alldata says the sub frame must come out, is that true?	View
	2005 Volkswagen Golf TDI 1.9L DDICM/PCM operation VIN: 9BWGR21J05 This is an unusual request, so bear with me. It is also intended for the VW techs, and hopefully the one crazy enthusiast that can get what it is I'm asking for. Here goes... This is a stand-alone 2004 MY BEW TDI engine that will be used in another non-VW pla...	View
	2005 Volkswagen Beetle GLS 2.0L no start VIN: 3VWCM31Y55 intermittent no start - cranks ok...fuel pressures(ok) spark(ok) code(s) DTC 01314	View
	2000 Volvo S70 GLT SE 2.4L No Start VIN: YV1LS56D0Y Tow in , cranking no start. Code 720A immobilizer mlfn. Spark - yes, Injector pulse - no, Fuel pressure test - pass. Using an AUTEL scan tool, PID for "SIGNAL FROM IMMOBILIZER" not O.K. / Replaced Immobilizer Antenna - did not fix. We can communicate with Immo... Trouble codes: 720A	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2005 Audi A4 1.8L Cuts out, Stall VIN: WAUAC48H95 Thanks for all the replies unfortuantly the issue was gas. half the tank was water. souldve checked it sooner. lesson learned	11
	2004 Buick Rainier CXL 4.2L Differential VIN: 5GADT13S84 Thank you all for your input. I removed the transfer case motor and it drove fine. Replaced the motor and all is well. Changed the fluid in the rears and transfer case as an added measure. Thank you Clint	12
	1990 Chevrolet Corvette 5.7L Hesitation, Stall, MIL Lamp on VIN: 1G1YY2389L Thanks for all the helpful advise.Customer opted to take vehicle with check engine light coming on with code 43,intermittenly.I had check timing,(had readjusted multiple times),replaced igniter,checked distributer bushings,tested knock sensor,and was going to ... Trouble codes: 43 (ESC Circut).	15
	1994 Chevrolet Camaro Z28 5.7L engine VIN: 2G1FP22P2R Hi: Replaced PCM with reman unit and sent out to be reflashed for performance as customer requested. After installation,car did not run but now had communication with scanner. On live data, had NO RPM reading.Using Shopkey flow chart for "no start, cranks ok, ...	19
	2005 Chevrolet Silverado 1500 LS 5.3L Excessive Emissions, Poor Idle Quality, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2GCEK13T25 Sorry for the delay, I have been so busy I haven't had a chance to post the fix for this one until now. So I disconnected both up stream HO2's and they dropped the voltage down to 400 mv and the truck ran great! Replaced both upstream oxygen sensors and the ... Trouble codes: P0171, P0174, P0300, P0131, P0138, P0158.	19
	2005 Chevrolet Trailblazer LS 4.2L timing chain VIN: 1GNES16S55 Well after doing and engine oil flush with no result I opted to replace the cam phaser like some suggested,I put it on and hope it would work.and it did thanks to all the replies	5
	2006 Chevrolet Suburban 1500 LT 5.3L rear lift gate VIN: 3GNEC16Z36 Looks like this one is behind me. I looked the latch/actuator mechanism over carefully and realized that the actuator only disengages the latch release levers from the lift gate release handle and button for the glass, it doesnt actually open any latches. So I...	4
	1995 Chrysler Cirrus LX 2.5L wont start VIN: 1C3EJ56H0S HI thank u guys for your help The problem was shot down relay wiring under Junction block ( relay Box) left side of engine	22
	2000 Chrysler LHS 3.5L engine/flexplate??? VIN: 2C3HC56G6Y Well thus far---I have swapped HB w/new=no change. Pulled eng to chk flexplate=no cracks. started tearing down & checking eng parts; no visible cyl head,cam or rocker issues, piston skirt wear & cyl walls=like new, wrist pin play=none, rod brgs=normal light ...	15
	2002 Chrysler Town & Country EX 3.8L speedo VIN: 2C4GP74L32 Well &%&& **! Thanks to [...] from Michigan, alternator fixed this one. most responses said ck wiring at trans and below battery, had already done this because of loom bieng soaked with oil, no problems were found. still not sure why alt fixed it but me and c...	6
	2004 Dodge Durango Limited 5.7L Transfer case VIN: 1D4HB58B74 Thankyou everyone for your input on this help request. I was able to order a used transfer case shift motor at a reasonable price, a new one from the dealer was almost $1200!, and after aligning the shift shaft to match the new motor when I installed it, it no...	9
	2006 Dodge Ram 2500 SLT 5.9L Stall VIN: 3D7KS29C06 This truck is fixed. The only drive ability problem I found other than start/stall was that when you hit throttle hard in neutral truck would continue to run high speed for 2-3 seconds after letting off throttle. Pulled injectors and found 3 with washer above ... Trouble codes: P0191 (Fuel presure circuit performance pending code only).	4
	2004 Honda S2000 2.2L HID Headlight VIN: JHMAP21444 Thanks everyone for all the helpful suggestions. Nearly everyone agreed, swap parts left to right to determine which parts are at fault. Chris from Utah said in his experience if the light never comes on at all, it's usually the ignitor. If the light comes o...	14
	2008 Honda Accord EX 2.4L MIL Lamp on VIN: 1HGCP36808 We could not find any concrete cause of the issue on this car since it had to be driven at least 150 miles before the problem would occur. I did clean the ETC and did a top engine clean. We will see what happens from here. Thanks to all those who replied even ...	6
	2004 Hummer H2 6.0L Ignition Cylinder VIN: 5GRGN23U04 I got a key cut at the dealer from the VIN, it worked after about 6 tries, enough to get it turned that 1 more time. Once I could turn it, removal was no problem. I brought it to local locksmith to have repaired, he cut a new key from code on cylinder body and...	7
	2000 Jeep Grand Cherokee Limited 4.7L No Start, Stall VIN: 1J4GW58N6Y Thank you all for replying. The problem again was the PCM, I would like to know more about the rebuilding process of these PCM's. I originally stated that the symptoms were the same for all 3 PCM's, actually the 1st one never lost the 5v ref, the last one did,...	8
	2004 Kia Sorento EX 3.5L Transfer case VIN: KNDJC73364 We replaced the TCCM with new unit from the dealer and then had to replace a faulty front speed sensor that we had put in as well. All systems are working as needed.	4
	2008 Lincoln Navigator 5.4L Ignition power VIN: 5LMFU28548 I received 8 replies, most related to a PATS or starter circuit issue which was not my problem. Patrick from Florida & Timothy from Wisconsin got me pointed in the right direction, though it took quite a bit of time, research, and a little luck to find the ca...	8
	2008 Mazda 3 i 2.0L Poor Idle Quality, MIL Lamp on VIN: JM1BK12G98 I think I'm going to open a forum on this car. I still havn't fixed it. I took it to The Mazda dealer and to a better equiped Ford Dealership and they couldn't figure it out. The Ford dealership told me you can't shave the heads on these cars, but I can't figu... Trouble codes: P0012.	7
	2002 Mercury Mountaineer 4.0L Mechanical VIN: 4M2ZU86E22 leak down test on the right head showed intake valve leaking,figured cam timing jumped because of chain tensioner/guides on that cam chain,after discussing repair with owner they had it towed out of here,thanks for everyones input,iatn is a good thing mark	4
	2006 Nissan 350Z Touring 3.5L Convertible Top VIN: 1N1AZ36DX6 OK. The fix was to replace the soft top control module. The previous mechanic replaced the 5th bow motor which is very common in these things. The tracks on these need regular lubricating with lithium grease spray or equivalent. When they run dry the motor ov...	3
	1987 Porsche 944 S 2.5L oil level light VIN: WP0AA0947H as always,thanks to all that responded.we did remove the valve cover(16 valve engine)and it was about as clean in there as you could ever hope for on an old car.we also removed the IC and did find some bad solder joints/repaired,still same problem,we spent qui...	7
	2007 Saturn Outlook XE 3.6L R.F.Turn signal VIN: 5GZEV13737 Thank you to everyone who replied especially mark and craig who said the courtesy light fuse controlled rf turn signal when i saw thei reply i remembered when checking the fuses it was missing from fuse box and interior lights were inop although i rechecked my...	8
	2006 Scion xB 1.5L Unknown VIN: JTLKT324X6 Sorry for the late reply, just wanted to make sure the Scion had time to be sure it is good. Basically, we installed another compressor, flushed the system, had no debris and made sure everything was perfect again. I used an oscilloscope and watched the patt...	5
	2006 Suzuki Grand Vitara Luxury 2.7L Poor Idle Quality, Stall VIN: JS3TE94146 after cleaning the throttle body throughly, the vehicle returned to normal. no more stalling at with the a/c on when coming to a stop. thanks guys for the help	6
	1991 Toyota Camry DLX 2.0L Compressor VIN: 4T1SV21E6M Sorry for the long time in closing this, I was waiting on the customer to bring it back. The trans. went out on it so I will probablly never see it again. I was going to check the dual pressure switch next and go from there. I had already checked the relay bef...	8
	2002 Toyota Sequoia SR5 4.7L Abs Traction Control VIN: 5TDBT44A72 WE CHECKED ALL REPLIES THAT CAME IN BUT NONE WORK . AT THIS POINT THE CUSTOMER DECIDE THEY WILL TRADE THE VEHICLE IN. THANKS AGAIN TO ALL WHO TOOK THE TIME OUT.	4

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