Automotive Technicians Technical Discussion and Fixes for Jul 8, 2011

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	Help Request	Answers
	2001 Cadillac DeVille 4.6L No Start, Cuts out, Stall VIN: 1G6KD54Y71 This car came in for a intermittant stalling and no start. We replaced both crank sensor (NAPA) and a MAF sensor, but still intermittantly stalls out. It will only stall out or cut out during idling. Fuel pressure at 38psi idling, sometimes falls to 35psi, but...	View
	2004 Cadillac CTS 3.6L Electronic VIN: 1G6DM57764 Hello gm guys I have a 04 cts the car came to me with the Ac not working customer said it had a leak in with they put die in it a year ago. I looked for a leak a spotted a leak at the condenser there was not alot of frown in the car. I replaced the condenser f...	View
	1990 Chevrolet C1500 WT 4.3L Mechanical VIN: 1GCDC14Z7L Hello , the a/c pump failed ,speading metal thru the system. Replace the a/c comp. Accumalator, [...] in color orifice tube and flushing the system condenser, evap and hoses. Evac the system/recharge. The a/c dose not cool the low side pressure is 60-70 psi an...	View
	2000 Chevrolet S10 2.2L passlock VIN: 1GCCS1955Y The ignition key cylinder with the hall effect is bad. They are quite expensive and the customer does not want the passlock fixed it possible. I heard if you put a resister in the yellow 5 volt wire at the cylinder, to drop it to about 2.5 volts and let it re-...	View
	2003 Chevrolet Impala 3.8L excessive idle speed VIN: 2G1WH52K63 Uggh... This Impala came in with the complaint of a sticky throttle just off idle, like so many of these 3800's have. I removed the throttle body and cleaned the bore and plate, reinstalled it and road tested. All seemed good. After the customer picked up the ...	View
	2006 Chevrolet Equinox LS 3.4L blower resistor VIN: 2CNDL13F36 I have this Equinox with a melted electrical connector at the heater/ac blower resistor. I have replaced the resistor pigtail on lots of other GMs but on this one the dealer says the only thing they can get is the plastic connector w/o any wire terminals and n...	View
	2008 Chevrolet Trailblazer 4.2L Misfire VIN: 1GNDT13S68 Thanks to all who respond. Mostly when cold under accel It misfires and then backfires out the tailpipe. Misfire monitor shows everything ok, no codes, fuel pressure is good! Any advice would be great thanks!	View
	2004 Dodge Ram 1500 SLT 5.7L engine VIN: ID7HU18D34 truck came after stalling at stop light, no check engine light or pending codes. checked lt fuel trim and it is -16%. replaced cam, crk, evap canister and natural vacuum pump assembally. graphed secondary ignition and looked good. also graphed fuel pump wave f...	View
	2007 Dodge Caliber R/T 2.4L MIL Lamp on VIN: 1B3HE78KX7 Hi techs I have a p0420 should I replace both converters [Ithink there is one in the exhaust manifold] or can I get away with just one?If so which one thanks Trouble codes: P0420	View
	1997 Ford F-250 5.8L Steering VIN: 1FTHF26H6V We have replaced both front lock outs from auto to manual two weeks ago.We checked the front end because of what was happening with the lock outs. The auto lock outs were engaging creating somewhat of a pull and noise. Now going down the road the truck will da...	View
	2000 Ford Expedition XLT 5.4L wiper VIN: 1FMFU18L6Y Hi guys ihave this car for a few days came in with complaint of no wipers loose roof message panel intermittenly wiper are not operating at all now. We follow the chart all the wires from combo switch to gem module has continuity also from gem, to relays have ...	View
	2004 Ford F-350 Super Duty XL 6.0L head gasket VIN: 1FTSX31P44 I was just needing some advice on the best way to do head gaskets, havn't done these before. I determined the gaskets are leaking, externally. Is it easier to remove the engine, or remove the cab. also Im told to use the head stud kits, I guess the lack and le...	View
	2005 Ford Crown Victoria Police Interceptor 4.6L No Reverse VIN: 2FAFP71W95 No transmission experience so looking for a direction to go. Has no reverse but all forward gears are fine including o/d. No codes in any system using modis scanner. No unusual noises. Seems to be a slight effort for reverse but raising rpm does not help get a...	View
	2011 Ford Focus 2.0L Shift Interlock VIN: 1FAHP3FN0B *Attention Ford Dealer Techs* This worked fine before our tech replaced the front subframe and an inner tie rod on the right side. Tech could not get car out of park after repair. We went over all the basics, cable is good etc. Brake switch at pedal teste...	View
	1990 GMC C6000 C6D042 8.2L No Start, Fuel in oil VIN: 1GDM7D1F5L No start with fuel present in crankcase	View
	2004 GMC Yukon SLE 5.3L Misfire, MIL Lamp on VIN: 1GKFK16T54 Vehicle came in with the check engine light and hard starting. It had a bunch of codes so I cleared them and p0342 and p0200 came back as hard faults. Ive been chasing the p0342. I tested for the 12v supply to the injector as it was good . I probed the signal ... Trouble codes: P0342, P0343, P0200	View
	2004 GMC C6500 Topkick C6C042 7.8L starter VIN: 1GDJ6C1336 Hello. This C6500 truck intermittently has no crank. I replaced the electrical portion of the ignition switch. This truck sometimes goes two and a half weeks with no problems, then only when cold in the mornings it will not crank. I found a wiring diagram fo...	View
	2001 Jeep Wrangler SE 2.5L no gears cold VIN: 1J4FA29PX1 Hello everyone, let me start off by saying I'm not a transmission tech, just tring to help a family member. I'm shure you have all been there... I've had this jeep for a couple of days and have noticed when cold it has no forward or reverse(just a slight bump ...	View
	2003 Kia Sorento EX 3.5L Poor Idle Quality, Misfire VIN: KNDJC73313 hello all, and thankyou in advance for your help. we have this sorento here that has a slight misfire at idle, and gets slightly worse as it gets hot. we checked tune, and recommended plugs and wires. did tune up and still no change. did injector kill test on ...	View
	2007 Kia Sportage LX 2.0L compressor VIN: KNDJF72407 Hey guys, Rick again, hope alls well. I have a 07 sportage with an ac problem. Originally car came in after hitting deer, only things damaged was f. Bumper, grill, 1 light and bent condenser. Ac still worked fine. Replaced above parts, including bent condense,...	View
	1992 Lexus GS400 4.0L Hesitation, Cuts out, MIL Lamp on VIN: JT8UZ30C2N Hey everyone. I know I need to do some more testing on this one but I wanted to get an opinion the O2 sensor code. This car has a very noticeable power loss. It feels like plugged exhaust. Anyone ever seen a downstream O2 sensor cause this? I know I need to fi... Trouble codes: 27 (left downstream O2 sensor)	View
	2004 Lincoln LS 3.0L Hesitation, MIL Lamp on VIN: 1LNHM86S44 This 2004 Lincoln LS was towed off the highway to the local Ford Dealer for a Flashing Check engine light. Dealership replaced the #6 coil for water intrusion. They then called the customer and told them it needed a new Throttle Body for the tune of $1400.00. ... Trouble codes: P2135 (TP sensor a/b voltage correlation), P2106 (TAC Forced Limited Power)	View
	1999 Nissan Frontier XE 3.3L No Start VIN: 1N6ED26Y3X Hi! Engine intermittenly stalls--.We replaced the fuel pump, strainer (oe) and fuel filter. When the engine stalls we have good voltage and ground @ the pump connector on the tank, tach reference and spark are good. We have the fuel pump relay by-passed. Am ...	View
	2003 Nissan Maxima SE 3.5L No Start VIN: JN10A31032 The car was towed into the shop and it cranks but will not start.The customer has replaced most of the frontend parts, radiator, core support etc. The system has a P1800 VIAS code. I ohmed the VIAS solenoid and it is open circuit, but this cant cause any no-... Trouble codes: P1800	View
	2005 Nissan Quest 3.5L MIL Lamp on, cruise inop VIN: 5N1BV28UX5 Help, I need a Nissan tech. This nissan came in originally with an occasional app sensor 2 code. Would go into limp mode. All other fuctions o.k. Replaced APP sensor, and could not get the computer to relearn. Would either accept the the app sensor and would i... Trouble codes: P1574	View
	2008 Nissan Titan SE 5.6L MIL Lamp on, limp mode VIN: 1N6BA07F68 this thing is stuck in limp mode. p0643 pops instantly and the others come on after a while. i've checked for shorts, corrosion, bent pins, and everything else i can think of. the only weird thing i can find is one of the vref signals is 3.5 volts. it has two ... Trouble codes: P0643, P2138, P1550	View
	2004 Pontiac Grand Am SE 2.2L compressor VIN: 1G2NF52F94 vehicle came in with low refregerant,static psi 50 L/side,60 on H/side.Recovered refregerant and added 1lb.Had car running and noticed inlet and outlet of evap core lines were icing up on the outside.Pressures were 30 psi L/side and 170psi H/side. Compressor w...	View
	2004 Porsche Cayenne S 4.5L cv joint VIN: WP1AB29P64 seem to be not aligned because cardans does not look ok on the rubber damper on the end of the shaft	View
	2001 Saturn L300 3.0L No Start VIN: 1G8JW52R01 Towed in and customer thought it needed a fuel pump. Upon inspection of the basics, there was no power to the fuel pump. After performing scan found several codes in the system. Based research that I have done so far, I have opted to remove the ECM and test th... Trouble codes: B2623 (u2105-), U2105 (b1000-), B1000 (u1000-), U1000 (u1016-), U1016 (u1024-), U1024	View
	1996 Suzuki X-90 1.6L Clutch VIN: JL3TD21V2T hi tech e have suzuki x 90 that came in with clutch problem not shifting i puled the trans and found the clutch burned i installed a new clutch disc press plate and throw out brg clean the flywheel and new pilot brg put it all back together and it still wont r...	View
	2001 Toyota Sequoia SR5 4.7L Poss Cont Head VIN: 5TDBT44A31 Veh came in with rear a/c not cold.rear expansion valve was blocked.changed here and a/c blew cold.replaced comp,condens,dryer,both expansion vaves and flushed due to noisey comp with contamination. Low side is at 60 and high side 275 in 100 weather low humidi...	View
	2003 Toyota Land Cruiser 4.7L abnormal noise VIN: HD78RJMNZQ this is a landcruiser o3 hdj78 wagon with a 1hd-fte turbo diesel,i have a very noisey knocking noise and vibration from the fuel lines,peaks at around 1400rpm,have reduced noise by removeing holding clamps from the metal sections of the pipes,but the electroni...	View
	2007 Toyota Sienna XLE 3.5L serp belt VIN: 5TDZK22C57 hi all. got this van in for a squeak in engine.clearly it is coming from belt area.replaced serp belt and upper idler but still makes noise.anyone out there had this problem before? with a stethascope the loudest noises are coming from the upper idler pulley b...	View
	2002 Volkswagen Cabrio GL 2.0L Vibration at idle VIN: 3VWDC21V42 This car vibrates at idle, it is worse with the ac on of course. All the engine mounts have been replaced and this has no effect on the vibration. Checked for vacuum leaks and found nothing. Can not find anything wrong with this car. The vibration can be felt ...	View
	2004 Volvo V70 2.4 2.4L r&r VIN: YV1NC63D94 We are doing our first evap core on a 2004 v70 Volvo. It looks straight forward on Alldata but thought I would ask the best group of tech in the world if there is any thing I should look out for or short cuts. Also do you recommend replacing the heater core at...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2004 BMW X5 4.4i 4.4L ride hieght VIN: SUFXB53524 wish that i had some good news as to the repair of this vehicle. unfortunatly ive nothing to add as far as repair. i exhausted all info and recomendations for repairand none has helped but id like to say i really did apreciate all the help i recieved. we sent ...	8
	1991 Cadillac DeVille 4.9L Poor Idle Quality, MIL Lamp on, no communication VIN: 1G6CD53B7M Ended up being a bad PCM. Finally got it to act up for a longer period of time, gave the PCM a sharp rap on the side and the communications line came back to life. Replaced ECM and all is good. Trouble codes: 52 (PCM Memory Reset).	6
	2005 Chevrolet Suburban 1500 Z71 5.3L rear blower fan VIN: 3GNFK16ZX5 problem #1 was not finding the correct wiring diagram for this system in all data. located the correct EWD in model year 2004. the tsb for module failures causing similar problem did not apply to this vehicle. could disconnect module in rear control panel and...	5
	1995 Dodge Grand Caravan SE 3.3L Cuts out, Stall VIN: 1B4GK44RXS Yikes, I "closed" this the weekend following the post but I guess it didn't go through, I just noticed it still indicated open request. Sorry guys. Anyways, lots of good help out there, after clearing my head I went back to basics, ignored the scanner resul...	6
	1997 Dodge Dakota 3.9L Poor Idle Quality VIN: 1B7GG26XXV Thanks to everyone for your quick, helpful replies. I took all of your suggestions into consideration and after some more testing, the battery of all things turned out to be the problem, as some of you suggested. Thanks especially to Ed for the quick refresher...	13
	2005 Dodge Stratus SXT 2.4L Unknown VIN: 1B3EL46X25 I have only been able to duplicate one time since I posted. Scarry feeling doing 60 mph and drop to second gear. Will wake you up if you are daze-driving. Can not find any problems in wiring, Went trough whole system including pdc to see if I could see hot spo...	8
	1999 Ford Taurus LX 3.0L fluid VIN: 1FAFP52U1X thank-you for the info..never saw air trapped in 'muffler' before. used old a/c pump and hand over resiviour to pull air out. took couple tries, but now all is well. and Brother Mike says thanks also	23
	2005 Ford F-150 XL 4.2L Hesitation, Misfire, MIL Lamp on VIN: 1FTRF12225 both trucks replaced coil packs and pcm's.both recieved full tune-ups.both running great.thanks to all that replied! Trouble codes: P0353, P0303.	7
	2006 Ford F-150 STX 4.6L warm hard start VIN: 1FTRF12W56 Hello Techs.. I recently designed a TEE to fit my OTC fuel testing kit and this TRUCK. This tee was made from a fuel filter and placed in line on the frame.. result is that the fuel pressure drops off significantly once the truck is off. Replaced the NEW air ...	11
	2007 Ford F-150 XLT 5.4L Four Wheel Drive VIN: 1FTPW14V47 Thank you everyone that replied. We decided to go with the switch after speaking to the coustmer. Many of you said check for codes but as I said we had no codes. The coustmer was traveling through so cant be 100% if it fixed it after three days they have not c...	7
	2005 Honda CR-V EX 2.4L no cluster VIN: JHLRD78945 Thank you for the replies. I tried the self test of gauge set and all was good. I replaced the speedo cluster. 2 weeks and all is good. Thank you again for the help., Trouble codes: P0600.	3
	2006 Hyundai Santa Fe GL 2.4L Hesitation, Cuts out VIN: KM8SC73D66 First I'd like to thank Tha for his reply! It turned out that it was the original faulty TPS sensor causing the problem. For some reason, even though there were no codes, the computer memory had to be cleared after replacing the TPS sensor. Once I cleared the ...	2
	1991 Jaguar XJS Classic Collection 5.3L alternator VIN: SAJNW4848L thanks for the help, put a peanut pig tail and bulb in till I get the resistor. 7 months so far. Its been a learning project.Pulled the v12 and install the 350 400 turbo trans, used a conversion kit from Johns Jaguar conversions in Texas, still had to do lots ...	4
	2003 Jaguar X-Type 3.0L Starting VIN: SAJEA51CO3 Thanx for all the help guys! I didnt know how to test the CAN system by probing the OBD2 connector and checking resistence and i forgot about checking it through the wave form also! I did both those tests and came up with nothing very helpful and will continue...	5
	2004 Jeep Grand Cherokee Laredo 4.0L Speedometer VIN: 1J4GX48SX4 Thanx again for all the input. We have not fixed this one. I will repost when problem is found or repaired. Sorry for not having anything helpful to post. Thankyou all. Kevin	6
	2002 Lincoln Navigator 5.4L Batttery VIN: 5LMFU28RX2 First off, let me thank each one of you that took the time to respond to my help request. I am a one man shop and I sometimes just need to bounce some ideas off other techs out there to help me take off my blinders and look beyond what I think is wrong with a ...	7
	2000 Mercedes-Benz E320 3.2L Starting VIN: WDBJF65J2Y A huge thank you goes to Steve [...] and here is what we discussed and what got the vehicle on the road again: These ignition switches (EIS) have 8 tracks with 200000 rolling codes on each track. When you purchase a new one (recommend a new key-keyfob at...	5
	2005 Mercury Mountaineer 4.0L valve spring VIN: 4M2ZU86E15 Engine runs great now. We ended up loosening the cam bearing bolts slowly and carefully. We did not take the rear timing chain off and did not want to get involved with replacing the cylinder head. Added air to the #2 cylinder so the valve would stay up and po...	8
	1999 Nissan Maxima SE 3.0L Hesitate start VIN: JN1CA21D2X Found issue with the vehicle, turned out to be a loose ignition switch housing. Replaced the two shear bolts, and the ignition switch. Vehicle now starts all the time. Thanks for the interest and any help provided!	12
	2006 Nissan Armada SE 5.6L unknown VIN: 5N1AA08B56 as far as i know the vehicle is fixed installed new brake booster because the delta switch is believed to be faulty	7
	2000 Pontiac Grand Am SE 2.4L Stall, Misfire, MIL Lamp on VIN: 1G2NF52T7Y i want to thank everyone for your help i ended up putting 2 coils and the coil housing car run great. thanks agian Trouble codes: P0300.	18
	2005 Pontiac Montana 3.4L No Start, Cuts out VIN: 1GMDV23E65 Although I had been tempted, too, to replace the ig sw I couldn't find the smoking gun. Good thing since apparently it is ok. The issue with the starter switch turned out to be the 60a headlight fuse I pulled so I could trace wires without running down the b... Trouble codes: P0128 (Tstat temp below norm), P0455 (Large evap leak), P0327 (Knock sens low input), P0520 (Op sw circ).	9
	2005 Saab 9-3 Linear 2.0L compressor VIN: YS3FB79N95 Well, it turns out that the problem with the compressor clutch ground was in the T8 ECM. The customer, however, decided that I should try bypassing the ECM and add a rocker switch to turn the compressor on when using the ACC, since this is an occasional use, ...	2
	2006 Saturn Relay-2 3.5L all wheel drive VIN: 5GZDX23L76 The problem with the tires being different speeds was turning off the awd. Reprogram the abs mod and the problem went away. 3 problems wires, w/bearing and bad abs mod.	7
	2006 Toyota Solara SLE 3.3L Abs VIN: 4T1CA38P06 thanks for taking the time to help me out. used scanner to graph each wheel speed. found very small dropouts under 4 mph in left front wheel. changed wheel speed sensor and all is well. p0500 did not come back.	5

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