Automotive Technicians Technical Discussion and Fixes for Nov 23, 2007

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	Help Request	Answers
	1997 Audi A6 2.8L Key Lock Cylinder VIN: WAUGA84A4V Need A Better Description To Remove Key Lock Cylinder For Ignition	View
	1992 BMW 318i 1.8L Poor Idle Quality VIN: WBACA5315N This BMW came in with a no start, exstended crank condition. We finaly traced it to weak fuel pressure. Installed new fuel pump with filter, now it fires right up. Now we have a idle surge issue, 500 to 1500 rpm's. Checked the iac valve with dvom, so far ok. I...	View
	2000 BMW 528i 2.8L No Start VIN: WBADM6349Y The car came in initially for wipers in-op. The customer checked fuses and the climate control was in-op after that. Arrived here and the climate control was up and running when I drove the car into the shop. checked the wipers and the nuts all tight on linkag... Trouble codes: 130 (CAN buss), 050 (Fuel selonoid valve), 069 (Fuel pump reay), 035 (secondary air pump), 126 (Tank leak pump)	View
	2000 Cadillac Catera 3.0L Alternator VIN: W06VR54R6Y alternator is over charging, replaced alternator,positive cable is getting very hot to the touch have checked all ground connections, all positive connections, all have been cleaned and reattached still doing the same added a ground wire from battery to the bl...	View
	2004 Cadillac SRX 4.6L Suspension VIN: 1GYDE63A24 Greetings Fellow Techs, Got a strange one in today. 2004 Cadilliac SRX-when traveling down the road and in no set pattern, the display will read "Stability System Engaged" The driving habits of the vehicle don't change and after a short time the message will g...	View
	2007 Cadillac DTS 4.6L Charging VIN: 1GEEH96Y47 This Caddy after driving for while will start to show a loss of charging voltage. The charging rate will vary from 12.5 to 14.5 volts When this occurs the accessories start to shut off and the low tire monitor system light comes on. There are no other problems...	View
	1996 Chevrolet Blazer 4.3L Timing VIN: 1GNDT13W6T Look guys and gals I am a Toyota tech but my boss says I am the tech period " NOT!!! " Please keep in mind this thing is not stock, but right now the aftermarket turbo is removed, nitrous is diconnected, all aftermarket timing cheats are removed, valve timing ...	View
	1997 Chevrolet C1500 Cheyenne 5.7L heater core, VIN: 2GCEC19R1V Well this is one I have never seen before. This pickup usually at lower speeds will start making a loud almost banging noise under the dash. I am sure know that it is the heater core. We pulled the cover and if you put your hand on it you can feel it right at ...	View
	1998 Chevrolet C3500 Cheyenne 6.5L Heater VIN: 1GBKC34F2W This truck defrost does not switch on. AC does not work also. All other controls work I've checked everything I know to check. Everthing is new!If u ground the white wire the defrost will work then but I know my grounds are good.	View
	2001 Chevrolet Silverado 2500 HD 6.6L Surge VIN: 1GCHK23161 this vehicle came in 1 week ago extremely noisy at idle checked for codes maf sensor voltage high replaced maf monitored pids found frp at idle was 26000 psi replaced frpr on pump with new one from dealer unit ran fine performed service for customer and they w...	View
	2003 Chevrolet Silverado 3500 6.6L front end VIN: 1GCJK33113 This truck has a grind and severe vibration at low speed. We have replaced both wheel bearings, all 4 ball joints, and the mid shaft bearing. The vibration is there on accel and decel. I have shifted the truck in to neutral and let the truck coast to a stop wi...	View
	2003 Chevrolet Silverado 2500 HD 6.6L Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1GCHK23113 GUYS I need some info an derection here. This 6.6 has codes p0087/p0089/p1093. An runs very poor 40 mph tops. I checked the fuel press at test port 2 psi vac. I have a tech2 scanner an reading the actual fuel rail press. koeo is 203.3 desired fuel rail press. ... Trouble codes: P0087 (P0087 for fuel rail pressure too low.), P0089 (The difference between actual and desired FRP is more than 20 MPa), P1093 (The difference between commanded fuel pressure and actual fuel pressure is more than 20 MPa.)	View
	2004 Chevrolet Silverado 2500 HD 6.6L power loss over 2000 VIN: 1GCHK23164 We have scanned, checked all available data against what we have from Mitchell and Alldata. Unable to find a clue as to problem. high idle switch already checked. The biggest problem is the vehicle is here on an island, with a load in it making it impossible t...	View
	1998 Chrysler Cirrus LXi 2.5L No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 1C3EJ56H4W This gem was in about a month ago as a no start and had a loss of signal on the 8V line from the PCM out to the sensors and Distributor. I gave it the 8V and it started and then ran fine until now. The Customer returned wanting a tuneup, so we replaced the plu...	View
	2001 Dodge Caravan SE 3.3L wipers, windows, radio, heater fan VIN: 1BFGP25R71 Hi everybody! This 01 Caravan is being difficult. at times the power windows, wipers, radio, and blower fan are inoperative all at the same time. This seems to happen intermitantly. when it does happen it is either KOEO or KOER. After about 20 seconds everythi...	View
	2002 Dodge Ram 2500 Van 5.9L No Start VIN: 3B7KF23Z82 Hey guys thanks for your help in advanced. This is my truck i just put a jasper trans in it i left my scantool hooked up to it and disconected the bat. and rehooked it up now it won't start i have no spark no injector pulse the check engine lite will not go on...	View
	2003 Dodge Ram 1500 SLT 4.7L Poor Idle Quality, Stall VIN: 1D7HA18N13 Hi gang-New customer, came in and said that after a battery had been installed elsewhere his truck now intermittently has low idle speed and sometimes stall. I saw it do the stall in gear and in park. I have tested the battery-OK, checked connections-OK, tappe...	View
	1993 Ford E-350 Econoline 7.5L Dash Illumination VIN: 1FDKE37GPH Vehicle complaint was no tail or signal lights on one side. After driving in to bay, all exterior lights worked, dash lights were on constantly, digital odometer was displaying with key off. Fuses, powers and grounds were all checked. Now, with doors closed, l...	View
	1994 Ford F-150 XL 4.9L No Start VIN: 1FTEF14Y4N thanks in advance, truck cranks but won't start. give it a couple shots of starting fluid starts right up and then continues to starts after it get cold again only cranks. vehicle has new fuel pumps,iac,plugs,wires,cap and rotor,tp sensor, o2 sensor. any id...	View
	1997 Ford F-150 4.6L dash guages VIN: 1FTEF17W9V Have 1997 f150 with an instrumenet guage promblem. Sometimes the voltage guage and temp guage will max out on the high side and fuel guage will go to empty and turn low fuel li ght on. This happens quite a bit. We have installed an alternator and took it back ...	View
	1997 Ford Explorer Eddie Bauer 5.0L ABS Module VIN: 1FMDU35P1V Car came in with a low, soft pedal and the abs sometimes coming on at a slow stop, Replaced 4wheel brakes, rotors and calipers flushed the system. The pedal is hard like it should be, but the abs still sometimes comes on at a soft stop. There are no codes, che...	View
	1999 Ford cougar 2.5L Unknown VIN: IZWFT6IL8X 1999 cougar 2.5 dohc after hard acceleration there is a loud buzzing noise under hood at idle,you can feel in in air filter housing and near throttle body.Will buzz for minutes until you snap the throttle open again	View
	2003 Honda Civic Hybrid 1.3L Electric Power Steering Assist VIN: JHMES96633 Customer complains the Electric power steering (EPS) sometimes does not work so she steers in Manual, other times the Power steering acts like its on steroids and steers so easy she has a hard time controlling the vehicle. I can't pull DTC codes (EPS light on)...	View
	1993 Lincoln Mark VIII 4.6L air suspension VIN: 1LNLM91V3P Hey guys and gals, This Lincon will drop the front and back for no apparent reson. The customer does not drive this car in the winter so we have had it for a couple of weeks. It will hold air for days on end when sitting and then one day just drop both front a...	View
	2002 Mercury Mountaineer 4.6L Unknown VIN: 4M2ZU862ZJ I have an awd mountaineer that is in four wheel all the time you can really tell when you make a tight turn no code and cant get any communition with scan tool in 4x4 module, dont know if it is scaner or module. checked all fuses and good is this the 4x4 contr...	View
	1997 Subaru Legacy L 2.2L speed sensor drive VIN: 1DGR6R8YO1 the speedometer bounces up and down, when the problem occurs the engine has no power. If the vehicle is shut off and turned on three times the vehicle then runs good. I think the mechanical drive in transmision that drives the #2 speed sensor is bad it can be ...	View
	1993 Toyota Camry LE 2.2L engine VIN: 4T1SK12W3P I have in our shop this 4 cylinder Camry wagon that we cannot figure out the overheating problem, we have replaced the radiator and the thermostat and just did the head gasket, the head checked good and was pressure tested. Unless there is a crack in the head ...	View
	1995 Toyota Previa DX 2.4L rear tail/brake lights VIN: JT3AC11R0S Hey Toyota techs, the rear tail and brake lights come on at the same time if you hit the brakes or turn the lights on, both elements light up. Replaced all bulbs with 1157 and high center 1156. Inspected and cleaned bulb sockets. Checked grounds using voltage ...	View
	1998 Volkswagen Jetta TDI 1.9L MIL Lamp on VIN: 3VWFR81HXW hi all fellow diesel techs-here is the saga of a silver jetta tdi: -car came in with intermittent check engine light, 3 fault codes 65535 internal control module memory error-intermittent, 01050 glow plug monitoring-intermittent,00575 intake manifold pressure ... Trouble codes: 65535 (internal control module memory error-intermittent), 01050 (glow plug monitoring-intermittent), 00575 (itake manifold pressure control difference-intermittent)	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2000 Audi TT 1.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: TRUTC28N7Y Although this particular vehicle would not set or store a mass air flow sensor code, we concluded through various eliminative procedures that in fact, we were dealing with a defective mass air flow unit. Test results for fuel pressure passed. Ignition system... Trouble codes: P0300, P0302 (po304-), P0304.	11
	2002 BMW 525i 2.5L Excessive Emissions VIN: WBADT43462 Replaced upstream o2's with bmw oe. Thank you everyone! Trouble codes: 228 (bank 2 permanent deviation).	5
	2003 Buick Century Custom 3.1L MIL Lamp on VIN: 2G4WS52J43 Thanks to all who replied. Some were concerned about plugged passages, which has nothing to do with this code. When we check at the PCM for ground when commanded, it was there. Traced harness back toward EGR and found a spot near the left strut mount where the... Trouble codes: 0403 (EGR circuit malfunction).	7
	1995 Chevrolet K1500 Suburban 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: 1987KLV84Y Wow, You all were guessing with me!!! Ha. Well, guessing would be rightfully so when you see what was wrong with this beast. I read the replies that I had received this morning and took that under my belt as I went to work. I had already decided that my first ...	12
	2000 Chevrolet S10 2.2L squeeling noise VIN: 1GCCS1954Y Thanks to all that sent ideas, I learned alot. Well, I knew this was wierd when I started, and I was not disapointed. After I sent the original message I noticed an exhaust leak getting louder. Turns out the exhaust manifold had four studs missing on the botto...	18
	2003 Chrysler 300M 3.5L Misfire VIN: 2C3HE66G93 Well guys we have discovered that the problem,was partialy ours.We were always on track with the problem,by replacing valve springs,which is a common problem on these.Here is the sad part,when we were doing valve springs,we induced air into the cylinders inste...	15
	2005 Chrysler Town & Country Touring 3.8L exhaust VIN: 2C4GP54L25 thanks to all for the great info. i can start by saying this was a hard find .we replaced the trans mount and added a counter weight to the exhaust pipe in front of muffler.test drove bingo noise was gone. thanks agian this IATN is a great resourse Neal [...]	9
	2003 Dodge Caravan SE 3.3L park lamps VIN: 1D4GP25R03 Based on the good info in all your posts, the IPM seemed a common culprit. I replaced it two weeks ago and haven't heard back yet, so am assuming all is ok! I will call the customer in another week to verify all is well and update this post. Many thanks!	6
	1995 Ford Mustang GT 5.0L hard cold start VIN: 1FALP42T6S I would like to Thank all of the Tech's that took the time to answer my plea of help with this vehicle. I had already checked everything that was recommended, except that I had forgotten about the summer/winter blend change of fuel that we have here in the Mi...	13
	1998 Ford Taurus SE Comfort 3.0L Excessive Emissions VIN: 1FAFP53S9W First of all I would like to thank everybody for all of the help. I was having problems with our local dealer getting an ecu it seem's the dealer was just not interested in selling me one. I called a dealer from out of town that we use for hard to find parts a... Trouble codes: P0443.	12
	2000 Ford Expedition XLT 5.4L Excessive Emissions, Poor Idle Quality, Cuts out, Stall, Misfire, Poor Fuel Economy VIN: 1FMPU16L3Y The dealer installed new plugs boots and a coil. the vehicle ran better but check engine light came on code for the cats. changing the cats should fix the rest. thank you all for the help...	9
	2002 Ford Windstar LX 3.8L engine/trans/steering VIN: 2FMZA51452 Well, Thank-you all for the different ideas,it was greatly appreciated.But,,,we replaced all of the engine and trans. mounts,cheked the flywheel for cracks,torque converter bolts were tight,loosened all mounts and let everything hang,checked for any lift damag...	7
	2005 Ford F-550 Super Duty XL 6.0L Hesitation, Surge, Cuts out VIN: 1FDAF57C75 vehicle still the same issues do not know what repair to try next unit has had numerous sensors checked and replaced ficm replaced pcm tested in another unit all ok injector wiring harness tested seems ok any ideas in th...	6
	2005 Ford Taurus SE 3.0L All Gauges,Tach,Speedo VIN: 1FAFP53UX5 Hooked up VAT tester and monitored Bat. and charging system voltage. Noted Bat. voltage would drop to approx. 9.4 volts during cranking after several start and stop cycles. Charged Bat. and load tested at 250 amps. after approx. 15 seconds Bat. voltage would b...	8
	2007 Ford E-350 Super Duty 5.4L dash light Thanks too all that replied. I did scan the computer today & no codes were set. But over the holiday the light also went out on its own. We will wait until it happens again.	13
	1996 GMC K3500 Sierra SL 6.5L Glow Plugs Due to the possibility of head removal the customer decided that using the block heater this winter would be better than fixing it. I did get great responses however, if I do repair this I will try using a pipe over the glow plug with a torch, then rapidly coo...	5
	2003 Kia Optima SE 2.4L No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: KNAGD126X3 Thanks to all that replied... I replaced the timing belt balance belt. crankshaft reluctor wheel and Crank angle sensor and it runs good. Took it for a 2 hour test drive and no dying problems. Man im glad this one is over. Thank u Hyundai dude for pointing... Trouble codes: P0335, P0340.	6
	2003 Kia Sorento EX 3.5L taillights VIN: KNDJC73353 Thanks guy's, I got a few reply's, the interior light is caust by a diode in the wirng loom with is in the left corner behind dash, and Ray was the one to tell me that the day time running light module causes the tail light not to come on some time, this one ...	5
	1993 Land Rover Range Rover County LWB 4.2L head gasket VIN: SALHC1345P Thanks to all who responded. The majority said to use the composite gaskets and(TTY)bolts,and the dealer only sells the composite gaskets.Therefore that is the way I went. I had the heads resurfaced(.010")used composite gaskets and the new bolts.All went well....	8
	2001 Nissan Sentra GXE 1.8L Excessive Emissions, Cuts out, Misfire, MIL Lamp on VIN: 3N1CB51D01 Thanks for the replys, the main respone I got on these is the foam ECM recall from Nissan. I am calling this one fixed due to the CEL has not returned. If it does I am sure it will go to Nissan for that campaign. There is also a Cam,Crank, three piece sensor... Trouble codes: P0171 (Lean exhaust bank 1 repeated), P0174.	7
	1999 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3HN86R5X I have been waiting for this owner to come back. She still has not. I have learned more from this help request than any other I have made. Thank you very much to all of you. Because of you I am now a sponsoring member of IATN. Best thing I have done in years. ... Trouble codes: P0420.	15
	2000 Toyota Corolla VE 1.8L Poor Idle Quality, Surge, Stall VIN: 2T1BR12E2Y Well, This one is not fixed (yet?). After trying a HO2S, complete throttle body assembly, 4 coils, and known good ECU, I'm stumped. I even completely isolated the basic fuel delivery system by running off a purge can of known good fuel. There are no vacuum... Trouble codes: P0171 (Bank 1 Too Lean).	14
	2002 Toyota Sienna LE 3.0L MIL Lamp on VIN: 4T3ZF13C82 well, for now its fixed. when we removed the connectors from the ecu to test. we cleared the codes and drive it till the monitors set and so far so good. Possible ecu connection issue? Thanks for the replys Trouble codes: P1155.	2
	1983 Volkswagen Vanagon L 1.9L cooling system VIN: WV2ZBO257D well, this nightmare ends. It left today. Thoughs that suggested crack in head were correct. We could not determine where the internal leak was coming from. Leak tests would not give answer. On leap of fail we repulled head on drivers side and could not see a...	21
	2000 Volkswagen Golf GL 2.0L fuel VIN: NO VIN Dear iatn friends. most of you suggested that there is air-leak to the intake manifold or to replace the maf , the problem with the car that after i have cleared all the codes , for the last two weeks the car is ok , no codes and the co level is ok. so it cou...	7
	2001 Volkswagen Passat GLS 4 Motion 2.8L Mechanical VIN: WVWSH63B21 This seemed to be a problem with a few different faces. First the belt was loose on the water pump from a bad tensioner. After that we flushed the heater core and used a cleaner for quite a while. Lots of sandy type material came out. Then while running it and...	10
	2005 Volkswagen Passat GLS 1.8L engine light VIN: WVWAD63B45 This Volkswagen Passat had frontal damage from a deer hit. The check engine light related to a camshaft positioning sensor code P0340. We replaced the sensor, cleared the code, but the same code came back after a short drive. Jeff replied promptly to my que...	7
	1991 Volvo 240 2.3L No Start, Stall Well I guess I'm going to have to turn in my ase master cert. and head back to the oil pit. It turned out to be the ignition module that I had replaced in August. The light I was using was showing spark But I had none when I used a gap type tester. I had a lo...	20
	1998 Volvo S90 2.9L valve lifters VIN: YVIKS9602W It was a truely Happy Thanksgiving for me! The vehicle has been finally fix and is on the road. Many thanks go to the the techs that responded. After rechecking timing, grounds, compression, fuel pressure and fuses/relays, I went back to the basics, the car ra...	14
	1999 Volvo S70 2.4L MIL Lamp on VIN: YV1LS55A9X thanks to all who replied to my message . after i did smoke test i founf the cause ,it was the vacum lines going from the oil trap over the top of engine to the middle of intake ,the lines were collapsed over the vacum canister . again thnks to all who repliye... Trouble codes: P0171.	7

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