Automotive Technicians Technical Discussion and Fixes for Aug 12, 2011

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	Help Request	Answers
	1995 Audi 90 2.8L power windows & sunroof VIN: WAUBA88C8S I am trying to diagnose this vehicle that has inoperative power windows and sunroof. I have looked at Alldata's wiring diagrams and have consulted with my hotline. The wiring diagrams look completely undiscernable... I do not know where to start. If you have e...	View
	2001 Audi A4 Quattro 1.8L Brake Pedal VIN: WAUDC68DX1 We did a brake system flush and a right axle. After that the customer said the brake pedal felt hard. Technician test drove vehicle and confirmed hard pedal in the morning or when the vehicle has been sitting for awhile. Other technicians stated that in revers...	View
	1998 BMW M3 3.2L temp VIN: WBSCD9326W engine runs near or at red area on gauge in city driving, and has lit up the hot light, electric fan never was on but comes on with a/c, can find no testing or good info on alldata if this fan is just for a/c? on highway temp gauge sits in middle and car blows...	View
	2006 BMW 330i 3.0L oil level reading VIN: WBAVB335X6 The engine oil needed to be changed and so the service was done. Even with 7quarts of oil the gauge still read at the minimum line. Also the word "service" is displayed together with the oil level, indicating that there is a fault in the oil level sensing syst...	View
	1991 Chevrolet V1500 Suburban Silverado 5.7L Idle VIN: 1GNEV16K3M This has me banging my head! Just installed a crate motor. (91 threw a rod bearing bad) Bought a crate motor that only has 8000 miles on it. The new motor is an earlier model block (1976 dipstick on driver side). Swapped 91 heads (less than a year old) and int...	View
	1994 Chevrolet K1500 5.7L Hesitation, Surge, Stall VIN: 1GCEK19K5R Customer states vehicle when first starting bucks and stalls and lacks power. Unable to duplicate problem because he goes to work at 4am, when it is coldest. I have removed distributer to look for worn gears, replaced binding EGR and have unsuccessfully tried ...	View
	2002 Chevrolet Silverado 2500 HD LT 6.6L No Start VIN: 1GCHK29102 Hi there. I have a very strange problem. This truck will intermittently not start, or start and stall. The vehicle will start if you manually pump the primer button and then be fine for about a week. Customer usually notices it in mornings when going to work, ...	View
	1999 Chrysler Town & Country LXi 3.8L Hesitation VIN: 1C4GP54L9X I have this van here that the speedomoter will flucuate and when it does the van will stumble and hesitate. when this happens I can watch on the scanner and the vehicle speed will go up and down with the speedometer. I have replaced the input and output speed ...	View
	2001 Dodge Dakota 3.9L monitors VIN: 1B7GL2AX01 This truck and cutomer have been through the ringer. My first look at it revealed codes for all 4 O2's and a torque converter clutch code (I am sorry I don't have the codes but I don't believe they are relevent to this help request). After some research and a ...	View
	2001 Dodge Ram 1500 Laramie 5.9L Poor Idle Quality VIN: 3B7HF13261 i thought i had this truck fix last week. when cold and only cold it runs rough. it also has a vacuum noise from throttle body. iac [new]. wqhen rougness goes away vacuum noise stops. it also had a high idle today. this was if time i dupicated customer complan...	View
	2002 Dodge Intrepid SE 3.5L Electronic VIN: 2B3HD56M52 has code p1776 l/r silonoid, should i replace vavle body or just silonoid?	View
	2004 Dodge Dakota SLT 3.7L wont communicate VIN: 1D7GL12K24 I am trying to connect a MODIS scan tool (version 9.4) and look at the scan data but the scan tool repeatedly says "no communication". I have tried the tool on another car (99 Saturn) and it communicates fine. It will not communicate on this dodge . It can ...	View
	2007 Dodge Sprinter 2500 3.0L Low Power VIN: WD0PE84577 Customer brought the vehicle and complained of low power and mil on. Another shop diagnosed it as turbo failure, but customer was wanting second opinion. I test drove the vehicle and scanned the computer with my Verus. Found the five codes listed. Starting wit... Trouble codes: 2078 (Differential Pressure Sensor Voltage Too High), 2079 (Differential Pressure Sensor Engine Protection Active), 2511 (Exhaust Gas Recirculation Control Position Error), 2355 (Exhaust Gas Recirculation Control Air Mass Too Small), 2359 (Charge Pressure Control Boost Pressure Too Low)	View
	2000 Ford Focus SE 2.0L Cuts out VIN: 1FAFP3435Y help me focus!i am helping a co worker,please read carefully the timing is on as i know these engines have issues.the fuel pump is new as is the crank sensor.now,this vehicle came in as a no start it would start and idle but if you revved it up it would fall o...	View
	2001 Ford F-250 Super Duty Lariat 7.3L gem VIN: 1FTN21F61E [...] Have an 01 super duty that has a chime from gem when started cold after sitting for at least 3 hours. I they jump in and start backing up a constant chime will sound from gem and continue even after the key is shut off untill you turn back to...	View
	2001 Ford Ranger XLT 4.0L cooling VIN: 1FTZR15E11 Vehicle will sometimes blow warm for long periods of time and then turn cold. Sometimes cold as soon as turned on. Seems to want to blow cold if vehicle is left to idle for a while before driving. Changed A/C cycling switch, no function change.	View
	2002 Ford Explorer Eddie Bauer 4.0L Rear Lower Control Arms VIN: 1FMDU74E12 First question (a stupid one I know) to check the front lower ball joints one must jack up the front end under the lower control arm to load the load carrying ball joint which is the lower ball joint? Yes? Second Question Can anyone make suggestions as for th...	View
	2004 Ford Taurus SES 3.0L Poor Idle Quality, Stall VIN: 1FAFP55U84 none, came in with KAM code(p1633). Finally got that to clear after replacing the 10amp AC fuse in underhood junction box. Why? Also, I have no idea what the normal counts for the knock sensor are. They have been as high as 65500, now are at around 13500, vary... Trouble codes: P1633 (KAM voltage low)	View
	2005 Ford F-250 Super Duty Lariat 6.0L Limp Mode VIN: 1FTSW20P45 I tow a 36ft gooseneck trailer. The problem is when I climb a big hill doing 70 MPH. As the truck slows during the climb the transmission downshifts to maintain power and speed. Once it gets down to 3rd gear and the engine is at full boost the wrench light com...	View
	2005 Ford Focus ZX3 2.0L Mechanical VIN: 3FAFP37N85 trying to r and r engine assy. does it come out the top alone ? do you have to drop out the bottom with transaxle?oh yea this exhaust is really one of fords better ideas lol.	View
	2008 Ford Escape Limited 3.0L engages at low speed VIN: 1FMCU04118 Vehicle came in a week after we installed brakes and said that his abs engaged when coming to a stop intermittantly it has code a c1234 rf sensor no signsl. Replaced sensor and the same thing happened. Seems like first hard application after sitting for a whil...	View
	1998 GMC C3500 Sierra SL 7.4L fuel gauge VIN: 1GDKC34J2W Sweep test with tech 2 gets gauge to respond. Does anyone know what we should see going into and out of balance module (fuel level in & fuel level out circuits)? Gauge shows approx 1/4 tank yet senders indicate nearly full.	View
	2003 GMC Envoy SLE 4.2L Electronic VIN: 1GKDS13S13 no blower fan front intermitantly high speed only. we have replaced the speed controller abs abd brake light come on when fan high speed is on and then goes out when fan quits all by it's self...Thanks to all for any help with this.	View
	2001 Honda Civic EX 1.7L Stall VIN: 1HGEM21921 I have a 2001 Honda civic with a 1.7 sohc v-tec engine. The car stalled on the customer. He thought the timing belt broke. timing marks are on and belt is good. I put fresh gas as gauge was on empty. Fuel pressure good. Spark good, (used hei tester). NO CODES!...	View
	2003 Hummer H2 6.0L auto ac VIN: 5GRGN23U53 customer complaint was ac only cools as low as 60 degrees and noise on acceleration, found bulletin for ac compressor noisy on accel with belt damage, verified noise on accel and high side psi was fluctuating rapidly, replaced ac compressor/ reciever dryer, or...	View
	1990 Jaguar XJS Classic Collection 5.3L Spark VIN: SAJCW4824L I have searched the knowledge base, which has a lot of previous posts from me including one for this very problem. In that instance, replacing both the CPS and the ESS (it was the ESS which fixed the problem) was the key. This time, all tests I can do are clea...	View
	1998 Jeep Cherokee Sport 4.0L No Start, Cuts out, Stall, MIL Lamp on VIN: 1J4FJ78SXW Jeep surges,bucks,stalls intermittently.p0351 related to ign.coil ckt.always sets.drove with fuel press.gauge installed -pressures steady during symptoms.has stalled and was towed in but restarted immediately.wiggled wires at crank sensor and engine stalled-re... Trouble codes: P0351	View
	2005 Kia Sportage LX 2.7L retun line freezing VIN: KNDJE72395 tryed condessor / tryed expansion valve /tryed duct sensor / tryed compressor system won't cycle and freezes return line	View
	2001 Lexus RX300 3.0L transmission VIN: JTJGF10U71 This one is for the Toyota techs out there. then transmission has a code p0765 solenoid s4 out of specs. open pan and check resistance in all solenoids and ok , read a few posts and they said it could be the transmission or the computer. The oil didnt look con...	View
	2003 Nissan Frontier 2.4L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1N6DD26T93 Failure Mode is intermitent Only after heavy accelaration or heavy load the MIL starts Flashing, afterthat poor idle quality is observed. Trouble codes: P0301 (CYL 1 Misfire)	View
	2004 Nissan Maxima SE 3.5L No Start VIN: 1N4BA41E34 Pulled codes for P1610,P1611. Told the customer that the car needed key reprograming from the Dealer. Customer had took the car and the Dealer told him that the key programing is good but the vehicle is out of timing and would cost him a diag. of 1,800. Custom... Trouble codes: 1610 (Lock Mode), 1611 (ID Disorder IMM ECM)	View
	2005 Nissan Xterra SE 4.0L Starting VIN: 5N1AN08V65 Hey all you nissan guys. I have a xterra killing me. It came in on the hook for no crank symptom. found power on gray wire into ipdm, no power coming out to starter on white wire. found 12v on red wire from tcm. replaced ipdm with update. still same problem. i...	View
	2006 Nissan Sentra SE-R Spec V 2.5L Surge VIN: 3N1AB51D86 Hey folks, This is my sons car. My son and his friends tried to troubleshoot the surge and they tried upluged every sensor to see what was going on, they couldn't figure it out so they brought it to the shop and told one of my techs. So this is what we did so ... Trouble codes: P0300 (Misfrie)	View
	2010 Nissan versa 1.6L electronic power steering VIN: 3N1CC1AP7A Vehicle came in without factory ac. Pulled dash and dropped down steering column after carefully unplugging all connectors. Removed heater box from car like one thousand times before and installed factory evaporator.Reinstalled heaterbox, dash and steering col...	View
	2000 Oldsmobile Alero GLS 3.4L MIL Lamp on VIN: 1G3NF52E7Y Car failure smog inspection with check engine light on.repaired camshaft sensor reset check engine light.Drove couple days check pending codes nothing, check monitors continuously[ misfire,fuel system, and comprehensive]NOT SUPPORTED.Non-continuous MONITORS NO...	View
	2001 Saturn SL2 1.9L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire, Poor Fuel Economy Customer compaint is bad gas milage, claims to get 19 mpg. Car is running very rough. LTFT"-9" STFT"10" it idles with a miss fire. Decided to install new igntion wires, the old ones were in pretty tough shape. After we started it back up it was running even wo... Trouble codes: P0440	View
	2003 Toyota Tacoma DLX 2.4L clears codes VIN: 5TENL42N43 I test drove the vehicle and was able to get the emissions monitors to run but when I turned the key off the monitors cleared. I checked the fuses and all were good. The EFI fuse powers the keep alive memory for the ECM. I checked the keep alive memory power a...	View
	2003 Volkswagen Passat GL 1.8L MIL Lamp on VIN: WVWVD23B03 Thanks in advance for your help! Car came in with excessive chain noise at back of cylinder head and p0011 intake cam retard setpoint not reached (over advanced) lower limit exceeded. OK, we're a VW shop, seen lots of this. Replaced the chain and electro/hydra... Trouble codes: P0012 (Intake cam advance set point not reached over retarded upper limit exeeded)	View
	2004 Volkswagen Passat GLX 2.8L Condenser fan VIN: WVWWH63BX4 Track diagrams are killing me! Everything seems to run through the fan controller, I'm starting to get confused about how this thing is supposed to work. Any help will be appreciated.	View
	2008 Volkswagen Eos 2.0T 2.0L MIL Lamp on VIN: WVWBA71F68 Initialy this vehicle would set an evap dtc every 1500-4000 mile, now it has become more frequent. In the past we were never able to confirm failure. the last time it was in for service performed the onboard EVAP self test, and confirmed failure, vehicle set P... Trouble codes: P0456 (Evap small leak), P1643 (01110- VW- evap very small leak), 01110 (VW- evap very small leak)	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2005 Audi A4 Quattro 1.8L No Start, Cuts out VIN: WAULC68E95 THANKS TO ALL OF YOU WHO TOOK YOUR TIME TO HELP ME SPECIALLY GREG HEIMAN WHO NAILED IT RIGHT ON THE HEAD. WHEN YOU ARE CONFUSED LIKE I WAS YOU FORGET THE FUNDAMENTALS IT WAS THE CAT THAT WAS CLODED I DIN'T BELIEVE IT BECAUSE THE ENGINE WAS RUNNING BEFORE I THI...	8
	2005 BMW 545i 4.4L Airbag VIN: WBANB3357B Thank you for all the replies. Replace left front door module and programming reslove the problem. Have a good weekend.	3
	1987 Cadillac Allante 4.1L Anti-Theft System VIN: 1G6VR3176H Well guys, this was as easy as pulling a fuse to eliminate antitheft. After rechecking wiring diagram realized that if I remove power to Theft Deterent Module it might cancel security. Hardest part of this all was locating module. Had to pull glove box out, th...	3
	2003 Cadillac DeVille 4.6L Misfire VIN: 1G6KD54Y03 Welll it ended up being a chaffed wire for the coil cassette. I ended up putting 4 inline spark testers and when the 5&6 clylinder fired it fired both at the same time. All help responses got me to this point and got me to cover the basics which sometimes get ... Trouble codes: P0300.	7
	2000 Chevrolet Camaro 3.8L No Start VIN: 2G1FP22K1Y thanks to everybody,the problem was in the key,went back to the dealer,got the key reprogramed .it cranked and started.i think they give me the wrong key to start with,caused me to loose alot of sleep the resistance in the key was wrong.the key and lock was th...	12
	2001 Chevrolet Cavalier LS 2.2L MIL Lamp on VIN: 1G1JC12411 THANKS TO ALL WHO RESPONDED WE WERE ABLE TO FIX THE CAR BY REPLACING THE FILLER NECK ASSEMBLY. THANKS AGAIN Trouble codes: 0440 (Evap system).	10
	2005 Chevrolet Silverado 2500 HD 6.0L master cyl VIN: 1GCHC24U75 Subject: 05 Chevy Silverado 2500HD 6.0L 2WD Pedal goes to floor on hard turn, left or right. Truck has off road wheels and tires and aftermarket suspension lift kit. I did ABS diag.-no codes-auto bleed,-pressure bleed, complete system / replaced wheel hubs ...	11
	2005 Chevrolet Silverado 2500 HD 6.0L Fuel gauge, Oil Press. Gauge, Charge Light etc. VIN: 1GBHK24U45 Didn't get a lot of feedback on this one. I tried unhooking all add-on electrical items on the truck and didn't help. Also replaced the battery to no avail. It turned out to be a faulty BCM. Thanks	5
	1998 Chrysler Town & Country LX 3.8L No Start VIN: 1C4GP64L0W got the an running today, ended up being a group of wires under the battery box that the insulation had came off and wires were togather. It appeared that a battery had boiled over and one point causing serious damage to the wiring harness underneath the box, ... Trouble codes: P0320.	15
	2001 Chrysler Sebring LX 3.0L Unknown VIN: 4C3AG52H01 Good afternoon techs well. as it turns out the compressor clutch was slipping on high rpm's Replaced compressor and charged system. Everything is good Thanks again Steve [...]	4
	1998 Dodge Intrepid ES 2.7L Poor Idle Quality, Surge, Cuts out, MIL Lamp on VIN: 2BEHD46R3W Thanks for your help. After one guy work for Dodge dealer came to reprogram the remain PCM, it still the same (I just lost another $100... for the guy came.)I request another Remain PCM and when it came I plug it in and every gauges working, I drove test aroun... Trouble codes: P0351, P0352, P0353, P0354, P0355, P0356.	4
	2001 Dodge Ram 2500 5.9L Surge, Cuts out, Misfire VIN: 3B7KF23651 Well I believe this one is fixed. We replaced the injection pump with a reman bosch pump and the engine would now rev past 1900 and ran great. The other new pump was an "internet special" that our customer chose to bring in and have installed. That was also th... Trouble codes: P1698, P1694.	9
	2004 Dodge Ram 2500 SLT 5.9L Surge VIN: 3D7KU28C14 Thanks for the advise all. I replaced the cam sensor and I haven't heard back from the customer. Hope that fixed it. Thanks again. Randy. Trouble codes: P0341 (cam signal error.).	4
	1999 Ford F-250 5.4L Hesitation, Cuts out VIN: 1FTNX21L5X Sorry for the delay in closing this request but I wanted to make sure this thing was fixed. It turned out that the EBCM was bad. It uses the rear diff speed sensor and then sends it to the pcm for a vss reading. the EBCM was somehow messing up the siginal and ...	17
	2000 Ford Excursion XLT 7.3L Ride VIN: 1FMSU43F6Y Thanks to Howard from Ky, turned out to be needle bearings in front wheel bearings that the axle rides on. Replaced brgs, the customer was by yesterday, it's doing fine. Thanx to all who replied!	11
	2002 Ford Escape XLT 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire VIN: 1FMCU04112 Thanks to all that replied. Several of you stated the coils as a probable cause and you were correct. I do not have a spark tester (loaned to a friend who never returned it) so I decided to replace the coils since they are fairly easy to do. I started with ...	9
	2004 Ford Escape XLT 3.0L Poor Idle Quality VIN: 1FMYU931X4 It came down to basics, the [...] vacuum reading and crappy idle led us to taking the timing cover off. It turns out the bank 2 exhaust cam was off 1 tooth, thats right ONE TOOTH! The cams were properly aligned and the idle problem was cured the fuel trims retur...	10
	2008 Ford Escape Hybrid 2.3L Cuts out VIN: 1FMCU49H68 Well thanks to all who responded on this one, we found chafed/corroded wiring in the harness directly in front of the battery, wires were swelled up and would not pass a load test so we replaced the harness and the Hybrid runs well again, thanks again for the ... Trouble codes: P1A0C, U2023 (Fault recieved from external node), P0106 (Map circuit fault).	4
	1996 Jaguar XJS 2 2 4.0L keyless entry/locks VIN: SAJNX2740T None of the replies related to what I think the solution is. They mostly referred to either lubrication or sensors relating to door closure. In that way, there was a near miss. The miss factor was that no one mentioned the possibility that the door switch, whi...	4
	2002 Jaguar S-Type 3.0L Misfire VIN: SAJDA01N32 thanx for all the replies, this lady had no more money to throw at the problem and sold the car to the dealer. one way to solve the problem!!! Trouble codes: P0302.	9
	2007 Mercedes-Benz SL550 5.5L hvac control head VIN: WDBSK71F97 Thanks to all who responded. Robert was right on the money, I had previously cleared the codes using my gynisis scanner, obviously it did not work. Sent vehicle to benz dealer and they reset control head and all is well. I still don't understand why replacing...	6
	2003 Mini Cooper S 1.6L Fans, Comptressor VIN: WMWRE33463 Thanks to those who replied. The fix for this vehicle was the cooling fan assembly. Ironically it was the very last part I thought of checking because we had replaced that unit 3 months ago. The assembly in question was purchased from Worldpac part# 17 10 1 47...	4
	2004 Mitsubishi Endeavor XLS 3.8L Torque Converter Clutch VIN: 4A4MN31S84 So after replacing the solenoid, the valve body and the fluid, replaced computer and latest updates performed. Nothing fixed it. I had a trans shop take it all apart to check it out (used transmissions were $3400) Everything checked out good other than the tcc...	7
	2001 Nissan Altima GXE 2.4L Crank No Start VIN: 1N4DLO1D61 sorry gents the customer is not willing to go any farther with this car... as stated before the p1612,1610 will not clear (nats system) i called out a lock smith, after many attempts we did get it out of escape mode ( red security light off)still will not star...	7
	2004 Nissan Maxima SE 3.5L power windows/power seats VIN: 1N4BA41E14 HAd to wait for client to return. Removed drivers seat and found as most said wire harness to lumbar switch rubbed through. Repaired and rerouted harness. Installed seat and everything is fine. I was concerned about new module being damaged but it worked fine....	8
	2004 Nissan Murano SE 3.5L No power/accel VIN: JN8AZ08T14 After countless hours of driving and testing due to the intermittent nature of the beast, the fact that someone from another shop had driven a proverbial Mack truck through several terminal ends during "testing" and due to the fact that upon noticed that it w... Trouble codes: P2122 (accelerator pedal [...]/signal low voltage), P2138 (wrong appsensor rational signal).	3
	2006 Porsche Cayenne Turbo 4.5L Pcv VIN: WP1AC29P76 Received 3 replies to this post. One said oil separator is the problem, the second said turbo seal, and the third said an intake leak(?). It seems that the oil separator is a part of the left valve cover assy. and is not available separately. The customer d...	3
	2007 Saturn Vue Green Line 2.4L MIL Lamp on VIN: 5GZCZ33Z87 Well guys let me tell you what i found. I looked for water and accident dammage and found none, so I check for chaffed wires around purge solenoid bracket that was ok, as I was sniffing around I found two bundles of wires breaking out of the harnesS by the t-b...	6
	1997 Toyota Camry LE 3.0L Cruising no load VIN: 4T1BF22K3V Well guys after test driving again and again and again, still wasnt able to get vehicle to act up for me. Customer took car 2 days ago and so far no phone call trying to reschedule an appointment. Was doing intake job on this, so while I had the egr off I chec...	13
	2004 Toyota Sienna XLE 3.3L right rear brake pads VIN: 5TDBA22C94 Ok, it has been 1000 miles and the pads are wearing normal, no over heating & no premature wear. I am calling this fixed by replacing inner brake hose. P.S. Yes Antoin, this has ABS which I still will be watching! It also has traction control. Thanks to all w...	9
	2002 Volkswagen Passat GLS 1.8L Launch Scan Data VIN: WVWPD63B32 Sometimes it is hard for me to comprehend the selfishness of some of the car manufactors. We need to keep there vehicle running but they give us no help in repairing them. Then to make a scan tool the you need a manule or book to interprit the data the scan to...	4
	2005 Volkswagen Jetta GL TDI 1.9L no reverse VIN: VWVRR61J55 The problem child is fixed with the input and help from some really sharp IATN members,by unplugging the 20 pin plug on the side of the trans.it goes into default mode and allows the trans.to shift into reverse.At the suggestion of Jared in Oregon we removed t...	7
	1981 Volvo 245 DL 2.1L Poor Idle Quality, Hesitation, Poor Fuel Economy VIN: YV1AX4556B lots of great information but the cam timing pin being sheered would have caused the cam timing to be off and it was right on the money. heres what the deal was the distributer timing was 15 degs retarded spec is 8 adv reset timming now it runs like a cham...	14

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