Automotive Technicians Technical Discussion and Fixes for Oct 23, 2013

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	Help Request	Answers
	2005 Acura MDX Touring 3.5L speedo/odometer VIN: 2HNYD18685 Removed cluster found used part had been installed. I have 4.89 volts at blu/wht wire C3 at cluster, VSS out circuit from PCM also has 4.89 volts at pin B26. I have unplugged the 5 other modules this circuit goes to and still have 4.5 volts on this circuit. Is...	View
	2007 Audi Q7 Premium 3.6L liftgate VIN: WA1BY74L47 rear liftgate was binding/not opening but latch/lock was releasing properly. upon inspection lh liftgate opener (j605/v375) securing screw was missing and opener was disengaged from hinge pivot. wiring was twisted up but doesn't appear damaged. motor was retim...	View
	1998 BMW M3 3.2L switch rolls VIN: WBSCD9328W I have an ignition lock cylinder that will rotate backwards as long as I do not turn the key forward first. If I turn the key forward to the on or start position, it will lock when turned back. I found TSB 32 01 99 which referred to very similar symptoms. Whil...	View
	2005 BMW 645Ci 4.4L steering angle sensor VIN: WBAEK73415 hey guys need a lil advice here I have this 645 2005 steering angle sensor only reads when the vehicle is off and when its turned on the reading goes to -8750 deg changed the sensor and had this guy tried to reprogram it but it wouldn program also there is a n...	View
	2011 Buick Enclave CXL 3.6L Cooling Systems VIN: 5GAKVBEDXB I know there are common water pump leaks on this vehicle but I cannot see it. What am I missing?	View
	1995 Chevrolet Tahoe LS 5.7L Hesitation, Cuts out VIN: 1GNEK13K2S Vehicle runs good at idle and off idle. Will run good the first 2-3 miles after cold start, then will have a hesitation/ bog between 1/2 and 3/4 throttle. Fuel trims and o2 showing rich when problem occurs. Fuel pressure stays high, over 20 psi, even after rep... Trouble codes: 45 (Rich exhaust)	View
	1996 Chevrolet K1500 Suburban 5.7L airbag/derm VIN: 3GNFK16R5T we replaced the derm on this truck after performing diag. for codes 55,61 and 71. checked ground and power circuits and found to be ok. the sir light blinks 6 times with koeo, light is on solid when stating and light blinks 7 times after engine starts. this is...	View
	2005 Chevrolet Equinox LT 3.4L Brake Lamps VIN: 2CNDL73F55 Customer concern was for cruise control intermittently inoperative. Found brake lamps on whenever key is in "run." Disconnected stop lamp switch, found lamps still on. Found good power on CKT 540, red & white wire at stop lamp switch, also found battery voltag...	View
	2008 Chevrolet Silverado 1500 LT 5.3L Misfire I have a miss fire in cly number 1 ran a comp test it was 150 when cranking over it was shooting gas out the comp.tester I did some reading on other post and found to have a lifter problem so we pulled the head off and replaced all 4 lifters on 1&7 had the hea... Trouble codes: P0300	View
	2000 Chrysler Voyager SE 3.3L I / M flags VIN: 2C4GJ45G2Y Time for emission testing and vehicle will not pass O2, Cat, & EGR self test. Customer has driven hundreds of miles. No codes. I have done Emission drive cycles a number of times. All data looks good, no power loss.	View
	2008 Chrysler Sebring Touring 2.7L od solenoid First of thank you in advance for your time and expertise!! P0760 OD solenoid circuit code, trans is second gear limp mode. Sent to me from our local transmission shop. Performed OD solenoid actuation test from scan tool no control.. Tested power supply to so...	View
	2001 Dodge Durango 4.7L Transmission shifting VIN: 1B4HR28N71 Guys I have an interesting one here. A couple days ago my customer came in with his Durango exhibiting some transmission shifting issues. He says that every time it rains or he goes through some water, the check engine light comes on and the trans goes into li...	View
	2001 Dodge Ram 1500 ST 5.9L No Start, Cuts out, Stall VIN: 3B7HF13Z71 this truck will run for approximatly one half an hour then stall and become a cranks but wont start. during cranking or koeo check engine light will not come on odometer will flash guages will not work also cannot communicate with pcm with scantool.after a whi...	View
	2009 Dodge Challenger SRT8 6.1L Unknown VIN: 2B3LJ74W09 Car came in with complaint of no acceleration and check engine lamp at random times. Scanned and found codes p2767 input speed sensor circuit 2 no signal, and code PO732 gear ratio problem 2nd gear. The vehicle owner (19 year old kid) beats the crap out of the...	View
	1985 Ford F-250 XL 6.9L Poor Fuel Economy, Low Power VIN: 1FTHX2614F Not a diesel tech, so any help would be appreciated: Truck ran well, started on first crank every time...then on the way home from a trip: -it started smoking badly on the freeway -had a loss of power -poor fuel mileage -rough idle with a lot of smoke -develo...	View
	2005 Ford F-150 Lariat 5.4L Valve Train VIN: 1FTPX12585 This vehicle came to us as a basket case - literally with the disassembled engine parts in small boxes. A new car dealer had washed its hands of the problems and sold it to our customer as-is. During engine re-assembly , we found that the left (bank 2) Cam Pha...	View
	2001 GMC Sierra 3500 SL 8.1L MIL Lamp on VIN: 3GDKC34G11 I have this truck belongs to city street department. Cust complaint hard start intermittently, but more noticeable when hot. Got the condition to duplicate, sounded like timing way off. Ran camshaft 1X signal at PCM pin 73 (brn/wht) and started with a good 12 ... Trouble codes: P0341 (Cam position sensor signal out of range), P0342 (Cam position sensor signal low), P0343 (Cam position sensor signal high)	View
	2003 GMC C6500 Topkick C6C042 8.1L No Start VIN: 1GDJ6J1EX3 Sorry for this long post. Truck towed in and would not start. Both tanks empty but guage read full. Put fuel in left fuel tank and engine started. Drained left tank and put fuel in rt tank. Guage read 1/2. Disconected sending unit from rt tank still read 1/2. ...	View
	2005 GMC Yukon Denali 6.0L MIL Lamp on VIN: 1GKEK63U75 this one is killing me. Sets a p0455 ,i have checked for evap leks and have found none. I saw on the scan tool that the fuel tank pressure is 15.33 in of h20. We pulled the tank down and did a vissual inspection of wiring and installed a fuel pressure sensor, ... Trouble codes: P0455 (Evap leak)	View
	1996 Honda Accord 25th Anniversary Edition 2.2L speedometer VIN: 1HGCD5688T Hello everyone! I've been scratching my head about this one for a couple of weeks now. The vehicle has no speedometer and no odometer, but everything else in the cluster/dash works fine. I followed the test procedure that mitchell ondemand suggested and these ...	View
	1999 Honda Accord EX 2.3L Shift quality VIN: 1HGCG3258X I know we all hate honda automatic transmissions, but I've got a question that maybe someone here can shed light on. We've replaced several honda/acura transmissions with imported units from Japan, and always see the same 2 things afterward. 1st:Speedometer wi...	View
	2003 Honda Odyssey EX 3.5L Hesitation, Surge VIN: 5FNRL18673 This Van has us puzzled and we have never seen this problem on a Honda, Hopefully one of you guys can help and shed some light into this problem. This van has a loss of power or surge at take off when cold for the first 2 min of driving and runs normal the res...	View
	2005 Hyundai Tiburon GS 2.0L MIL Lamp on VIN: KMHHM65D65 With everything set up properly at tdc #1, the camshaft reluctor is no where near switchover and the missing teeth for the crank sensor is no where close. If I set the gap in the tone wheel at the crank position sensor hole, the cam reluctor is not close to sw... Trouble codes: P0016 (cam/crank sensor correlation)	View
	2007 Hyundai Tucson SE 2.7L MIL Lamp on VIN: KN8JM27DX7 This vehicle has been in a couple of times with po159 code. I have checked for exhaust leaks,intake leaks,cleaned mass air flow sensor,replaced the b2s2 o2 sensor.there is no drivability issue it works great,just the ses light keeps coming back.Has anyone had ... Trouble codes: P0159	View
	1987 Jeep Cherokee Laredo 4.0L ignition VIN: 1JCMR7845H Hi guys this jeep came in with the problem turn off ignition switch and it keeps on running. customer would disconnect coil to kill engine but found battery would go dead due to ignition acting like its still in the run position even with key in off position a...	View
	2006 Jeep Wrangler Unlimited Rubicon 4.0L rear defrost VIN: 1J4FA64S16 jeep was purchased from dealer with soft top only. purchased hard top kit from dealer. I installed hard top and wiring. rear defrost dose not work, switch does nothing and does not light the on indicator on the switch. rear wiper and washer work fine. my quest...	View
	1995 Lexus GS300 3.0L Compressor VIN: JT8JS47E1S The a/c works fine but sometimes the a/c button in the dash starts to flash and the compressor clutch loses power. I have pulled fault code 43 from the control unit but this code pertains to the air outlet flap. No codes whatsoever for the compressor rpm senso...	View
	1998 Lexus ES300 3.0L Hesitation VIN: JT8BF28G5W Car came in with only cel complaint middle of the afternoon p0171. Vac. Line coming off intake snorkle cracked and broken. Replaced with new hose released car same day. Cel back on 3 days later same po171. Car dropped off no gas... Jumped into car first thing ... Trouble codes: P0171 (Lean bank 1)	View
	2006 Lexus RX400h 3.3L Misfire, MIL Lamp on VIN: JTJHW31U16 Customer complained that the engine was making a loud noise after making a panic/emergency stop and was towed in. Drove the car into the shop and heard what SOUNDED like and engine knock. Had a p0302 stored but could feel no dead miss. Determined the noise was... Trouble codes: P0300, P3190, P3193, C1259, C1310, 00A0F	View
	2003 Mazda Tribute LX 3.0L unknown VIN: 4F2YZ94193 Good afternoon folks,i am dealing with a vibration @ 55mph and up,feels like a bad u-joint,shaft has been pulled u-joints and carrier bearing are ok,test drive with rear shaft out vibration is still there. Run vehicle on hoist both front tires(new a few months...	View
	2006 Mercedes-Benz C230 Sport 2.5L Conductor Plate VIN: WDBRF52H06 Replaced conductor plate (ONLY). Preformed coding, programing with Autologic, all 7 steps. Vehicle will not shift into 3rd, sets a fault, P0894-gear implausible or trans slipping and goes into limp home mode. Trans does slip bad during 2-3 shift. Scan data sho...	View
	2007 Mercury Milan Premier 3.0L Occupant Classification System VIN: 3MEHM02177 This vehicle came in with a B2290 code (loss of communication OCS). It has had a new OCS module, new sensors, and a new harness installed for pass seat (found broken wire at inboard sensor connector). I'm still getting the code, and the scan tool data says tha...	View
	2003 Nissan Sentra GXE 1.8L Poor Idle Quality, Stall, Poor Fuel Economy VIN: 3N1CB51A13 Test drove vehicle and noted low rough idle(customer complaint is stalling when coming to a stop .maf reading at 2.34 gpm.smoke tested intake with no leaks found.checked battery and cleaned terminals.still had low/rough idle.cleaned intake system and readapted...	View
	1986 Saab 900 S 2.0L Poor Idle Quality, Cuts out, Stall VIN: YS3AC45DXG While we do not specialize in Saab's, we thought this one would be pretty straightforward. Customer complains of rough running/poor idle on cold starts. Could not find much information on this vehicle. Checked for vacuum leaks, found very small leak at IAC. Te...	View
	2001 Saab 9-3 2.0L air distribution drum VIN: YS3DD55H01 This rather nice old Saab has the dreaded manual climate control air distribution drum problem. I am familiar with this problem but don't know where to get the TSB about the "fix" involving lubing the drum. Can anyone out there help me??? TIA	View
	1997 Toyota Tacoma DLX 3.4L Hesitation VIN: 4TAWN72N0V Hey Toyota Techs need some help. This Tacoma will not rev over 3000 rpm. Great throttle response no hesitation until 3000 rpm vehicle starts to break up,buck,lose power. Scoped cam and crank sensors perfect. Im not smart enough to no if there in Synch with a s...	View
	1998 Toyota Camry CE 2.2L Guage Fuse VIN: JT2BG22K3W Thanks To all who responded in advance. the problem that we are having is when you move the gear shifter to Drive the Guage fuses blow. when i put the test light on the fues key on i get 14.9 volts and then when i put it in drive the volts go to 10v and the fu...	View
	2004 Toyota Prius 1.5L Unknown VIN: JTDKB20U74 Codes C1203 C 1246 C1364 C1345 The main codes are loss of pressure on one side of master cylinder and loss of pressure at one rear cylinder. And the car pulls hard to one side like the is a loss of pressure. Vehicle just recently purchased with no history o...	View
	2005 Toyota Tacoma 2.7L Mechanical VIN: 5TETX22N95 Have problem when first starting car in morning idle goes up to 2000 and hesisates and then comes down replace throttle body and air mass meter problem was no there untill we did throttle body service	View
	2004 Volkswagen Jetta GLS 1.8L Poor Idle Quality VIN: 3VWSE69MX4 Hi all,I have a 04 jetta(1.8 turbo)that's giving me fits.Car came in with rough and surging idle and codes for random misfire and #1 misfire.Replaced plugs(at least 3years old but didn't look too bad)and misfire codes haven't returned however still have rough ...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2003 Audi A4 Quattro 3.0L oxygen sensors both upper/ pre cat VIN: WAULT68E33 Tried fuel pressure regulator. Tried unhooking rear 02 sensors in hopes to change the slow response on upper ones, all that did was add more codes to the issue. The customer has taken the car for a couple of weeks, when the vehicle comes back we will work on t...	10
	1999 BMW M3 3.2L window motor VIN: WBSBG9332X Thank you all for your excellent input. Special thanks to Dick from New Hampshire for telling me 8 amp draw on the window motor,(I was at 6 amps).I called in a glass specialist who seemed to be happy with the way I had adjusted the window and the way it was cl...	9
	2002 BMW 325i 2.5L pressure solenoid VIN: WBAEN33482 Thank you to the 3 who took time to respond, we are running out of IATN time on this one so I am going to call it a fix.We have checked the wiring into the trans and are in the process of getting a pressure solenoid.The info available for BMW service is diffic...	3
	2007 BMW 550i 4.8L Poor Idle Quality VIN: WBANB53567 Hello all. Yes sometimes the basics are forgotten...I'm used to the sensitive nature of bmw. They usually set misfire codes. However, I went into ista and checked the smooth running values. Cylinder 3 was higher than the rest. After swapping plugs and coi...	8
	2007 Buick LaCrosse CX 3.8L Compressor VIN: 2G4WC58247 WELL GUYS THANKS FOR THE HELP. CHECKED CLUTCH AIR GAP WAS IN SPECS. DROVE CAR SEVERAL DAYS NEVER WAS ABLE TO DUPLICATE THE PROBLEM. WIGGLE TEST WIRES AND CHECKED RELAYS AND CONTACTS NEVER LOCATED A PROBLEM. RELEASED TO CUSTOMER AND INSTRUCTED THEM TO BRING VEH...	13
	1988 Chevrolet Caprice 4.3L Ecm VIN: 1G1BL51Z3J Thank you to everyone who replied. After much searching I stumbled accross this website... Listed are all the original applications for the service numbers along with all the YMM applications, all the PROM...	16
	2005 Chevrolet Silverado 2500 HD 6.6L power steering VIN: 1GCHK232X5 Im considering this truck fixed, after the reman parts did not help the issue and actually made it a little worse we decided to install new gm pump, hydroboost and box. Also tightened the nut on the flow/pressure valve to raise the pump pressure. After that th...	30
	2006 Chevrolet Silverado 1500 LS 4.3L turn signal VIN: 3GCEC14XX6 found voltage drop between ign. e fuse and turn switch.this fleet truck had a wire spliced into the pink wire going to a after market starter relay for an axillary battery .I rewired it to axillary box.. Clocked 3 hours not .3 Thanks for all Replies i can te...	22
	2011 Chevrolet Express 3500 4.8L chimsl (3rd stop lamp) VIN: 1GB0G2BA5B Unfortunately, no one had a diagram that differed from mine. I am not sure why the vehicle did not match the diagrams but it certainly was different. So, I just winged it by checking each wire from end to end with an Ohm meter. Finally determined that the BCM ...	11
	2004 Dodge Ram 2500 ST 5.9L Poor Idle Quality VIN: 3D7KU28C74 Thanks alot for the info guys this was alot of help, we did end up pulling the convertor out and replacing it and that solved the issue. thanks again	8
	2009 Dodge Journey SXT 3.5L Stall VIN: 3D4GG57V79 Installed the new cam gear, 11 mile test drive with no issues. Prior to repairs the code would reset without even moving the car. If anyone gets into this in the future. Alldata says to remove the cam to get the gear off (the bolt is 10" long) This was ... Trouble codes: P0344 (Cam position sensor intermittent B1S1).	3
	2003 Ford F-350 Super Duty XLT 6.0L Low power VIN: 1FTSW31P63 Thank you all for your replies. After pressure testing per several replies and finding no leaks i went ahead and replaced the high pressure oil pump. Runs like a champ now. I appreciate everyone for taking the time to reply. Trouble codes: P2290.	10
	2009 Ford Escape XLT 3.0L No Start, Cuts out, Stall VIN: 1FAFP15369 Finally got it fixed and thanks for the replies we checked all the inputs were good ended up replacing the pcm programed it all is good. Thanks again. Trouble codes: P0620 (Generator control circuit).	11
	2004 Honda CR-V EX 2.4L AB Module VIN: SHSRD78814 I decidied to visually inspect the speed sensor itself, of course I destroyed the sensor trying to remove it, replaced with new oem sensor still had same problem, pulled bearing to look at the tone ring, apparently what happened is the tech changed the warped ...	4
	1999 Jaguar Vanden Plas 4.0L Air Bag Light VIN: SAJKD6040X sorry for the delay and thanks for all the help. as advised i unplugged connectors before and after clock spring inspected terminals and connections all looked ok code still there. unplugged and ckecked resistance through clock spring found open wire. as this ...	9
	1999 Jeep Grand Cherokee Limited 4.7L instrument panel VIN: 1J4GW68N1X Wow lots of good suggestions.Turned out the door module{master switch in drivers door} was the culprit.Just got a little confused due to the fact it had the abs problem and a broken clock spring.	8
	2007 Lincoln Town Car Signature 4.6L Evaporator Not sure why Lincoln sells only evap with case. We removed case and replaced the evaporator core. This was a very simple, easy repair. The evaporator case is in the engine compartment. We lowered the inner fender well. Removed the ac lines and the heater ho...	6
	2002 Mercedes-Benz TCV2 2.2L glow plugs Thanks to Mukesh, Peter & Brad, the original relay (when pulled apart) had 4 internal fuses which were all blown, hence no output. The replacement relay is purely electronic so you will not hear it working. The plugs are glowing, thanks guys.	3
	2002 Mercedes-Benz C240 2.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: WDBRF61J72 Thanks to all who took time to read and respond. We installed a new factory set of ignition wires (actually they were all sold individually)...surprised after installation, it still had a rough idle. All it took form that point was a relearn of rotor sensor ...	8
	2006 Subaru B9 Tribeca Limited 3.0L Poor Idle Quality VIN: 4S4WX83C56 Hello, Everyone. I wanted to Thank everyone that replied. What we did was we clean the fuel injectors once more and did an engine flush per tsb that we found that the piston rings tend to stick when vehicle is overheated. And this vehicle did have a overheatin...	7
	1999 Volkswagen Jetta TDI 1.9L No Start, No Communication VIN: 3VWRF29M9X Yes I Have Fixed This Vehicle...With The Help From iATN. It Was The Injection Timing. It Looks Like Someone Had Been There Before Me Because I Could See The Marks Made By The Heads Of The 3 Bolts But Customer Says No. Anyways, I Adjusted It Some And It Was Way...	18
	2000 Volkswagen EuroVan MV 2.8L Electronic VIN: WV2MH4704Y Thanks to the three replies I received.Used OEM brand brake pads to get the light off,an ohmmeter should of picked this up..Confirmed fix	3

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