Automotive Technicians Technical Discussion and Fixes for Jul 2, 2012

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	Help Request	Answers
	2005 Audi A6 Quattro 3.2L Poor Idle Quality, Hesitation, Surge VIN: WAUDG74F95 Hello Group. I have a Audi A6 with a 3.2 that was just at Audi that went in for a "tune up" for a cold misfire and a hesitation/surge on easy acceleration. The customer came in today and asked for an injection cleaning because Audi said it may need a manual de...	View
	2001 BMW 525i 2.5L front pump VIN: WBADT43421 hello,I have a very basic issue here on this ZF [I repeat ZF trans]I am trying to remove the front pump to replce the pump bushing and seals and the pump will not come off. I have removed all of the bolts,the lower pan and filter,connected a slide hammer to a...	View
	2006 BMW 750i 4.8L Mechanical VIN: WBAHL83536 Hello BMW Techs, This car has smoking issues out the tail pipe intermittently, big clouds of white smoke comes out the tail pipe at start up at idle. We have tested the PCV system and it's fine. We have seen this often on these model cars with this kind of mil...	View
	1998 Chevrolet Monte Carlo Z34 3.8L Rocker Arm VIN: 2G1WX12K5W We have a 1998 Monte Carlo with a 3.8L. When the car first came in it was making a tappet noise upon inspection #6 cylinder intake rocker was not getting any oil but the rockers on either side of it were ok. We replaced all lifters and push rods and the one ba...	View
	2002 Chevrolet Malibu 3.1L cooling fans VIN: 1G1ND52J32 ok guys need help one more time, the cooling fans come on around 226f by that time coolant is coming out the reservoir.i can turn a/c on and fans come on, car runs normal. i can turn fans on low or high with scanner which tells me computer and wiring are ok. a...	View
	2005 Chevrolet Equinox LT 3.4L LF axle seal VIN: 2CNDL73FX5 Hey everybody this will be the third LF axle seal to put in this vehicle. No evidence the seals are bad but they still leak. Any ideas would be fantastic! Thanks	View
	2005 Chevrolet Astro 4.3L Instrument Clutch VIN: 1GCDM19X85 Hello Feller Tech. I need help or advise with this 05 Cherv. Astro van, No Air condition and Instrument clutch,(No Fuel gauge, Mileage read) I have work on this vehicle for few days, try to find down where the circuit on Fuse#12 cut off the power supply at I/P...	View
	2008 Chevrolet Cobalt LT 2.2L Remote door VIN: 1G1AL58F88 Hello all, I am really stumped on this vehicle. It originally came to me for the brake lights were not working when the vehicles running lights were on. Found that the brake switch was bad. Replaced the switch and calibrated it. Sent the vehicle down the road....	View
	2008 Chevrolet Impala LS 3.9L compressor/control head VIN: 2G1WS55398 The a/c blows cold then intermittley the a/c blows warm and the a/c knob light flashes.	View
	2001 Chrysler Sebring LXi 3.0L belt VIN: 4C3AG52H21 We replaced the tensioner pulley and belt about 2 months ago due to bearing failure. About 2 weeks ago it started making noise. Found belt frayed. Removed belt and checked pulley alignment with laser. All looks good. Install new belt. There is noise. Sounds li...	View
	1997 Dodge Avenger ES 2.5L Pcm VIN: 4B3AU52N6V I have a 97 dodge avenger (2.5l v6) that came in, runs very odd, sometimes rpms drop to nothing and stalls. Accelerates like rough sometimes too. I hooked up the scanner and had no communication with the pcm. I have tested all the voltages ect from the info ...	View
	1999 Dodge Grand Caravan SE 3.3L Stall VIN: 1B4GP44G0X Customer stopped by about a week ago with a complaint of vehicle will start then stall, could not duplicate and was instructed to do a quick throttle body cleaning. Customer stopped backed late last week and said the same problem was happening . At first she t...	View
	2002 Dodge Ram 2500 5.9L MIL Lamp on VIN: 3B7KF23662 Would like to know if any one can help if they have had a truck come back for this and where to look. I have replaced the evap. core and removed the dash. test drove the truck for over 20 miles and it seemed fine. Cust broght the truck back with it staying in ...	View
	1995 Ford F-350 XL 7.3L shifts in and out of VIN: 1FDKF37F5S heyguys and gals shifts in and out of overdrive no codes scan tool shows boo on all the time 8volts out of comp. pin92 sent comp. for testing found bad capisters still same problem help please	View
	1997 Ford F-150 4.2L water pump VIN: 1FTDF1724V Customer added coolant when it got hot two weeks after repair and no leaks were found. Now overheats after warm up. Removed water pump and checked impeller for looseness when hot, ok. Tried another new thermostat with the same condition. Thermostat opens but n...	View
	2002 Ford Explorer XLT 4.6L MIL Lamp on, P0135, p0155 VIN: 1FMZU73W02 Hello my fellow Technicians, I am in need of some advise from someone that may have any additional information about the o2 heater circuit operation or common problems with this vehicle. Customer brough vehicle for the check engine light being on, we scanned t... Trouble codes: P0135 (O2 sensor heater circuit fault bank 1 sensor 1), P0155 (O2 sensor heater circuit fault bank 2 sensor 2)	View
	2006 Ford E-250 4.6L vents VIN: 1FTNE24W56 A/C vents switch to defrost under hard acceleration. We suspect a vacum leak but can't find it. Is there a common place for these to leak? The customer say's he has three vans of this vintange that all have the same problem. The resovouir is tacked to the back...	View
	2008 Ford Edge Limited 3.5L Rear Wheel Bearin VIN: 2FMDK49C68 Vehicle has a bad LR wheel bearing. TSB 10-2-9 calls for replacing the trailing arm/knuckle assembly along with the new wheel bearing hub. Customer is pleading poverty. If we have him sign a waiver about probable premature wear as per the TSB, does anyone know...	View
	2008 Ford Edge SEL 3.5L vent flow VIN: 2FMDK38C48 This vehical has manual hvac system and has ice cold air on passenger side with good air flow drivers side has poor flow with cool air. Everything works from hot to cold and modes change fine . ? foam on door or case bad or leaking anyone seen this problem? re...	View
	1990 GMC K1500 Sierra 5.7L front 4x4 differential Okay problem is that the shaft that goes into the tube part of the front 4x4 differential (right hand, passenger side) keeps coming out too far(it comes loose from the retainer the latches onto the shaft. This retainer is located inside the gear that the fork ...	View
	2003 Honda Civic EX 1.7L compressor VIN: 2HGES26783 good morning all ive got a honda with no a/c sat when car was in shop it was so hot in hear that i quikly hooked up a/c machine to car to see that the system was full and no compressor operation..there are 3 wires going to compressor when i started to check to...	View
	2005 Isuzu NPR 5.2L Cuts out, MIL Lamp on Tested for vacuum draw on fuel system and it was fine. 1 HG at idle and about 1.5 HG at WOT. I am wondering about an APP error at full WOT. No codes set for one. Any help would be appreciated. Replaced the fuel line because I was having an air intrusion proble... Trouble codes: P0087 (Low fuel pressure), P0093 (Large fuel leak)	View
	1996 Jaguar XJ6 4.0L instrument cluster VIN: SAJHX124XT The customer concern is warning lights and tach/speedo in the instrument cluster light up and off while driving or stationary with engine running. (no driving problems) i check the voltage and grounds to the cluster. No intermittent problem. I replaced the clu...	View
	2003 Jaguar S-Type 4.2L Heat and A/C Hot air is blowing from the vents with the Air Conditioning on. Yes, I know all about the dual coolant control valve and yes, that is the problem. However the coolant control valve is brand new AND I have tested for voltage going to the coolant control valve.....	View
	1999 Jeep Grand Cherokee Laredo 4.0L Unknown VIN: 1J4G258S3X Veh. was towed to shop will not start but cranks over good. Instrument cluster lights work but guages do not register. engine not firing nor injector pulse. Hooked up snapon solus pro will not communicate with any modules. Checked diagnostic junction point und...	View
	2004 Jeep Grand Cherokee Laredo 4.0L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1J4GW48S84 Ok, this one really takes the cake. The computer thinks bank 2 is lean when in fact it is not, then the computer adds fuel for an extream lean condition that does not exist. Here is what is happening, bank 2 s1 o2 reads ok at times, then the o2 sensor will go... Trouble codes: P0174	View
	2005 Land Rover Freelander SE 2.5L starting the car VIN: SALNE22205 Car came to us with no starting, it was cranking over but no start. found problem on the ECM, we repair and reprogram the ECM unit. car now start but die instatly ( start and stall). if i unplug the MAF , it start but dont accept accelaration ( dont open the t...	View
	2002 Lincoln Blackwood 5.4L electric lifegate VIN: 5LTEW05A82 I have this lincolin blackwood pick up truck. Customer states that when he try to close the power tonneau cover it goes down doesnt latch then goes back up. I have code B2424 latch switches mismatched. You can see on the pids that the left sensor reads disenga...	View
	1998 Mazda 626 DX 2.0L No Start VIN: 1YVGF22C9W This car came in from another shop .i could tell that it had the wrong key in it.i am recieving codes---1602 and 1624. I have had a locksmith over and he can not get it to program the key.i have checked voltage.everything seems ok except pin a on the immobiliz...	View
	2007 Mazda CX-7 Touring 2.3L timing chain VIN: JM3ER29367 2007 mazda CX-7,noisey chain on start up.This is the 2.3L turbo engine .I see the service bulletin,I have read the fix archives.Question is "What about the special tools" Do you have to have them?The tensioner reseting procedure seems kind of involved.Is there...	View
	1995 Mercedes-Benz SL500 5.0L soft top latch system VIN: WDBFA67E3S Vehicle had hydraulic leak at left latch actuator. Replaced left actuator which fixed hydraulic leak. When upper trim panel was reinstalled latch actuators seemed out of sequence. Refilled hydraulic reservoir, also disconnected and reconnected the battery. Nei...	View
	1997 Mercedes-Benz SL600 6.0L Convertable top VIN: WDBFA76F8V Evenin tech's and thanks for taking a look. Came in with bad engine mounts, problem resolved. Customer brought to my attention a noise in the trunk (door lock module cycling) with the top down. Read a TSB about a door lock actuator issue. So customer puts the ...	View
	1999 Mercedes-Benz E320 3.2L power windows-front,power mirrors, power sunroof VIN: WDBJF65H5X Customer complains of erratic and intermittent failure of multiple electrical systems. Often they "self repair". It acts possessed. Sometimes the front windows lose the "express up" feature (current problem) for both front windows. Currently neither works at a...	View
	2002 Mercedes-Benz G500 5.0L Door Lock Signal VIN: WDCYR49E32 the drivers side (front and rear door signal in the dash panel will indicate door open when you start to drive . I have ckecked wiring and it seem to be okay. Any help will be appreciated.	View
	2000 Nissan Maxima GLE 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Poor Fuel Economy, MIL Lamp on VIN: JN1CA31D2Y Hi guys, I have an issue getting the right maf for this maxima.The car came in with the mil light on, code for lean both banks, ping under load . other than that the car ran quite well.The scan data showed maf at 1.6 volts at idle but could not get it over 2.2...	View
	2001 Pontiac Aztek 3.4L Accessories VIN: 3G7DA03E31 vehicle came into my shop with various electrical problems.had no a-c,power windows,door locks,various lights on instrument panel. upon testing was led to bcm.replaced with boneyard unit and everything worked fine until i turned the a-c on then all gauges stop...	View
	2001 Toyota Camry LE 2.2L Stall VIN: JT2BG22K41 Hello im seeking help on this 01 camry and appreciate all ho take the time to read my request for help.this camry has a intermittent stalling problem that i can not duplicate,the customer told me that this car was at the dealer for the same problem,this vehicl...	View
	2007 Toyota Tundra SR5 5.7L power steering VIN: 5TBDV54157 Thanks for any help on this, we cleaned the screen on the resivoir, fluid level is where it should be , next step is for us to check spec on power steering fluid pressure, dous anybody have the specs on the pump pressure or volume test ?	View
	2002 Volkswagen Beetle GLS 2.0L Compressor VIN: 3VWCK21C22 I have no compressor operation.No voltage to compressor. I can power compressor and clutch operates. I know it gets signal from coolant fan control module and I can power clutch from here but I don't think I am getting signal from control head to fan module on...	View
	2002 Volkswagen Jetta GLS 1.8L 1-2 shift VIN: WVWSE61J12 Vehicle was in an accident (solo ran off road according to body shop) which physically damaged transmission causing leak. Body shop repaired body damage and installed used transmission. Customer drove the car for about a month after getting it back from the ...	View
	2006 Volkswagen Jetta TDI 1.9L No Start VIN: 3VWST71K26 Hi Everyone, I have a Jetta here that needs some experience I lack. It died while driving, then would crank and not start for 5 min, sat for a bit then started, drove a mile then died with crank, no start. Customer towed in and I retrieved u0100 lost communica... Trouble codes: U0100	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1991 Chevrolet C3500 Cheyenne 7.4L rr drum brake VIN: 1GCHC34N4M Thank you all for responding. Of the 16 responses the majority where to replace the shoes, Hardware and wheel cylinders. This is what we did. The shoes where not worn out but where very hard and glazed. The backing plate did have some impressive grooves wo...	16
	2000 Chevrolet Suburban 2500 LT 6.0L fuel rail, pressure regulator VIN: 3GNGK26U1Y I think it's fixed as the noise is gone at this time! We did a injector, throttle body, PCV valve, and passages clean and it seems to have cured the noise. Still don't know what was making the noise so it may be back? Anyway, thanks to the 7 members that took ...	7
	2006 Chevrolet Impala LTZ 3.9L Compressor VIN: 2G1WU581X6 The customer and I decided to try a new expansion valve, and that didnt change anything. He was going to try a new compressor even though he tried several other ones before this. Thank you for all the help, but I have to close this without a fix. Alex	12
	2007 Chevrolet Express 2500 4.8L Stall Thanks to all , I have done all the test you have mention , have repair the ground strap but it doesn't help . told you I got one code it tell trans oil over temp . Have look at it in Mitchel and it was said it will code at near 135 degres . But the problem oc...	7
	2003 Chrysler PT Cruiser Limited 2.4L High side low 50 psi ? VIN: 3C8FY68B63 Thanks to all the IATN members who reply and help with this FIX. First about the High side service port which was not the correct side as some of you said, it is next to the compressor and now we have the correct reading at 185 psi. next step was the condenser...	25
	2007 Chrysler Pacifica Touring 4.0L a/c system VIN: 2A8GM68X87 The Pacifica is fixed. The spec I was using for refrigerant capacity was incorrect. (back-to-basics) I was using a 2.0 lb spec and should have been 1.5 lb. (not sure where 2.0 came from) The system now works great. Cooling down to 41 degrees f. Many thanks to ...	11
	1997 Dodge Stratus 2.4L Tcm VIN: 1B3EJ46XXV Most of the replys said to ck pwr & grd's at the TCM which i had done also many mentioned that alot of TCM's are junk well what fixed mine was a new TCM, after replacing i had communication and everything is working correctly now.	6
	2007 Dodge Ram 2500 TRX4 5.9L Misfire VIN: 1D7KS28C87 Truck is fixed. Thamks for the replies. Apon further inspection the injectors where defective. We had ohmed the injectors and where looking for one or more to be off the charts, not so. I then set my DVOM to the 200 ohm scale and re-checked and found #1 an... Trouble codes: P2176 (Fuel Injector Group 1 Supply Voltage Open).	5
	2007 Dodge Ram 3500 ST 6.7L oil leak VIN: 3D6WG46A97 Well don't think pulling trans helped oil pan much , other than less weight to jack up for clearance. I think most of my oil leak was from rear main oil seal. It looked like pieces of it were missing and torn away, defiantly a leak. Thanks for the input	5
	2009 Dodge Journey SXT 3.5L Pads, rotors VIN: 3D4GG57VX9 All of the replies helped me to fix the issue. The reply with girding and or using a wire brush to clean the rusty off the bracket was the most help.	16
	2003 Ford Escape XLT 3.0L gauges sweep VIN: 1FMYU03123 Sorry its Been so Long. The Customer has NO MONEY. I'm not a charity so its Waiting on Them. I'm 90% sure its a bad ignition coil spiking the communication signal too the instrument cluster. at times it will do it in neutral. and after i decided it need a tune...	6
	2003 Ford Windstar LX 3.8L no crank VIN: 2FMZA514X3 Thanks to everyone that replied. The fix wound up being a poor ground to the pcm relay in the underhood fuse box. Ran seperate ground from back of relay,all is good.	4
	2007 Ford Focus SES 2.0L Direct Clutch & Band VIN: 1FAHP36N47 Turned out to be a valve in the VB sticking resulting in low line pressure. Went back through the VB. Car has been gone a few weeks now with no complaints. Sorry for taking so long to close this but wanted to make absolutely sure it was gone and was going to s...	8
	2007 Ford Ranger XLT 3.0L No Start, Poor Idle Quality, Hesitation, Misfire VIN: MNAUS2E907 Hi all found a bad plug to pcm to remady tps codes but still had no check light. tryed 2nd hand pcm and had to get ford dealer to code the keys in. as the luanch scan tool will not code. are still waiting on outcome. thanks for the help. Trouble codes: P0122, P2135, P0227.	8
	2007 Ford Fusion SE 2.3L Shift Solenoid E VIN: 3FAHP07Z07 Well, the customer needed his car back, so I sent him with a handheld scanner to clear codes when they come back to keep it out of limp mode. The only other info that I have for this car is while monitoring the data stream for the tranny, I noticed SSPCA sole...	5
	2000 Honda Passport EX 3.2L No Start, No comm. at DLC VIN: 4S6DM58W0Y Thank you to those who responded. The vehicle had two issues. First was a bad connection at the connector, by the left inner fender, that supplies voltage to the pcm from the main relay. Had 12 volts on one side of the connector and 3 on the other side. The s...	6
	2004 Kia Rio 1.6L Poor Idle Quality VIN: KNADC12554 Hello again ITAN. I'm sorry for the delay in closing this help request but I wanted to wait a while to insure the vehicle was running great. The issue ended up being that someone had turned up the idle screw causing the car to run lean. It was a simple repa... Trouble codes: P0121 (TPS circuit A range/performance problem), P0171 (System too lean bank 1), P1166 (O2S B1 control adaption).	14
	1998 Mercury Grand Marquis LS 4.6L compressor VIN: 2MEFM75W7W Well this one is done. I replaced the condenser and all pressures and temps were in specs. Fun part was when the battery disconnected and reinstalled the blend dorr actuator stuck at full hot so thats what i spent my sunday afternoon replacing. The customer is...	23
	2006 Mini Cooper S 1.6L left rear caliper VIN: WMWRH33556 Thanks to all. After market pads didn't have proper tension springs. Replaced and all good!	4
	2008 Mini Cooper S 1.6L computer network VIN: WMWMF73538 The problem was an unprogrammed CAS which would not power up thus preventing the network from communicating. An Autologic was used to install the missing software in the CAS without needing to power up the whole network. The software was provided buy Autologic...	3
	2004 Mitsubishi Galant ES 2.4L MIL Lamp on VIN: 4A3AB36F74 Doing a thorough cleaning to the egr passages was the trick. Convincing the customer was the difficult part. Trouble codes: P0401.	4
	2007 Nissan Altima S 2.5L A/C Compressor VIN: 1N4AL21E37 hey thanks to everyone for helping out. this one is fixed thanks to ricky [...],the bearing had been spinning on the compressor hub overheating the clutch.replaced the hub with and new clutch everything is ok now thanks again!	9
	2003 Saturn L300 3.0L valve lifter VIN: 1G8JW54R43 The car is still here waiting for customer approval. Great input from IATN members. I concluded the oil press is not low and is not causing the lifters to colapse. Instead the valves appear to be hanging up. #1 cyl has low compression and 20% lean by. The...	4
	1995 Subaru Impreza 1.8L Hesitation, Stall Using an inline fuel presure tester, I saw that presure would drop to 20 PSI when car lost power. Then I measured voltage by tank conector, stayed steady weather running ok or not. Got a used fuel pump from a pick and pull(nephews car). When installing I was d...	8
	2010 Subaru Forester X 2.5L Stall, Misfire VIN: 1F2SH6CCXA removed plugs and found 2 of them missing the platinum tip for the electrode. new plugs and all is well. Trouble codes: P0303, P0304.	7
	1995 Toyota Tacoma DLX 2.4L Hesitation, Misfire VIN: 4TAUN53B5S This truck is fixed, but not by me, so I will post as a summary. I wound up having to send this one to the dealer, I was just spending to much time on it. I tried replacing the MAF to no avail. I finally did find what I thought was the key to it all. While...	8
	2006 Toyota Tundra SR5 4.7L MIL Lamp on VIN: 5TBBT44156 I recieived one reply on this one and thanks for the input Thomas but I had allready checked and rechecked all of the associated wiring and it was correct. I had to drain the capacitors in the ecm by holding the positive and negative cables together and that... Trouble codes: P0340, P0011.	1
	2007 Toyota Tacoma 4.0L timing VIN: 5TELU42N17 After driving the vehicle another thousand miles, the fuel trims are coming back within range. The weighted value of the older long term fuel trims was quite significant and it is taking time for the improved engine management to change ltft. In regards to ...	6
	2009 Toyota Tacoma 4.0L No Start VIN: 3TMMU52N99 Due to mileage on vehicle it was covered by factory warranty. It seems that if the flash is interrupted for any reason you must replace the ECM. The only way around it is to have another identical vehicle that you can start the flash process on and before it a...	11
	2007 Volkswagen Eos 2.0T 2.0L MIL Lamp on VIN: WVWFA71F67 Installing new Timing Chain fixed, Codes P0016 Cam Crank Corrilation bank one issue.(Timing Chain Stretched) Boost Pressure Valve fixed Code P0234 Boost Pressure. (Boost Preessure Valve Cracked) Thanks to all the helped. Trouble codes: P0016 (cam/crank corrilation issue g40 g28), P0234 (Boost pressure reg. N75).	4

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