Automotive Technicians Technical Discussion and Fixes for Jun 28, 2012

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	Help Request	Answers
	1997 Buick LeSabre Custom 3.8L Stall VIN: 1G4HP52K4V the vehicle cam in for a hessitation has 150xxx miles recomended a tune up performed the tune up an the car idled high had a mass air flow code and throttle postion code replaced both an car still idled high found some vaccum lines with cracked conections and ...	View
	2003 Cadillac CTS 3.2L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G6DM57N13 we have tested all app and tps readings unable to duplicate readings that indicate an issue. have performed wiggle with no response. checked all ref voltage. very hard to duplicate with out driving Trouble codes: P0221, P0700, P2176, P2135, P0121	View
	1991 Chevrolet C3500 Cheyenne 7.4L rr drum brake VIN: 1GCHC34N4M Have a pickup with RWAL that has a RR brake grabbing. the brake pedal is very sensitive. Inspected the brake hardware and drums the hardware, shoes and drums look like they have been serviced recently but they haven't the drums are clean and not out of round, ...	View
	1999 Chevrolet K3500 6.5L Excessive Emissions, Surge VIN: 1GBJK34F4X Symptoms: Vehicle came in with intermittent black smoke from the exhaust while driving on steady acceleration. Checked computer for diagnostic trouble codes, four p0219 and p0226 followed testing for p0226 and everything tested as normal because of the intermi... Trouble codes: P0219, P0226 (Accelerator pedal position sensor 3)	View
	2003 Chevrolet Silverado 1500 4.8L Misfire VIN: 2GCEC19V63 I hope you guys can steer me in the right direction because I think I've hit a brick wall.This truck has missfires when cold(or after it has sat for 1/2 hour).Only missfires on the right hand cylinders(bank#2).Cylinder #6 is by far the worst.The missfire goes ... Trouble codes: P0300	View
	2004 Chevrolet Silverado 2500 HD 6.0L Stall VIN: 1GBHK24U14 This was a no start or start and die like vtd. To start we accessed all modules and found that there was no communications with bcm.Went to pcm and found vehicle would start with inactive showing and then active and vehicle would die. Check power and ground to... Trouble codes: P1626	View
	2004 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDS13S84 Hello iATN members, this Trailblazer is driving me nuts. First it came in with 2 misfire codes cyl. #2 & #5, replaced coils and it was fine for a week then it came back with cyl. #1 misfire, I have done everything posible, compression test, new plugs, 3 coils ... Trouble codes: P0300 (Randome misfire), P0301 (Cyl. 1 misfire)	View
	2007 Chevrolet Suburban 1500 LTZ 5.3L Bcm VIN: 3GNFC16J77 Ok here's one for all the GM gurus out there. One of my techs replaced the battery in this vehicle and now it will not start. He utilized a memory saver, but after the battery was swapped and it wouldn't crank, I ran all the fuses and found the cigarette light...	View
	2008 Chevrolet Uplander LS 3.9L abs VIN: 1GNDU23W98 vehicle has low speed trac light ilumination in information display abs pump can be heard happens without foot on brake pedal when leaving from a stop. no codes present visual inspection has revealed nothing.	View
	1996 Dodge Viper 8.0L Traped Air VIN: 1B3BR65E1T Hello IATN, I have a 1996 Dodge Viper that came in for an A/C service. Upon completion of the A/C service I noticed a pin size hole in the upper radiator hose. I ended up repairing the upper radiator as a temporary fix until new hoses and thermostat came in. W...	View
	2000 Dodge Grand Caravan ES 3.8L Abs VIN: 1B4GP74L1Y Hey guys have you ever run into a problem with a 2000 dodge grand caravan. My launch scanner cant communicate with the tcm, abs, bcm none of the modlues but the pcm when i scan it with the chrysler program. When i do generic obd it fails all communication. I c...	View
	2001 Dodge Ram 2500 5.9L extended crank hot VIN: 3B7KF23681 this vehicle was brought in beacause when is cold it starts right up, but after it gets hot after 160 degrees , if you shut off it will take a long cranking time... around 15 sec then it will start fine and run fine , it does not show any codes ,i check the co...	View
	2003 Dodge Neon SE 2.0L Fuel Gauge VIN: 1B3ES26C43 I have an 2003 Dodge Neon here and the instrument cluster is doing goofy stuff. The fuel gauge pegs to full, the speedometer and temp gauges will not work. (odometer does work and scan tool shows all data messages are good) You can unplug the cluster or pull f...	View
	2003 Dodge Stratus SXT 2.4L Drain VIN: 4B3AG42G83 Vehicle is flooding the drivers side floor...I found the drain on drivers side firewall, very tight location...It dosen't seem plugged but even today on a hot humid day, there isent any moisture coming out of the vent drain...Has anybody ran into this and what...	View
	1994 Ford Crown Victoria 4.6L Eec Relay VIN: 2FALP71W4R Seems to be a problem when hot all the Relays in that location get real hot and shut down car lose communication with computer and wont restart till cools down for hours	View
	2002 Ford Windstar LX 3.8L rear mode door VIN: 2FMZA514X2 when you move rear control knob for rear ac to direct flow from floor which then moves temp door to allow heat to flow it works fine . then when you turn knob to cool or overhead flow temp.door allows ac to flow cool air but it does not swich the door control ...	View
	2003 Ford F-150 King Ranch 5.4L front wheels VIN: 1FTRW08L63 Fellow IATN members I need your help.Customer called last week that truck was locking up in the right rear,also said maybe an issue with L front.I get vehicle in on Friday and inspect.Found drag on RR wheel attributed to sticking caliper.Replace both rear cali...	View
	2003 Ford F-550 Super Duty Lariat 6.0L Hesitation, Surge, Lack of power VIN: 1FDAF56P23 Greetings people of IATN. I have this 6.0 pain in the butt. This is not making any since to me. This truck has no boost from a stop sometimes! If you drive it and stop then hammer it it will only build 4 to 9 lbs boost and surge then if you keep it there it ma...	View
	2004 Ford Ranger Edge 4.0L high LTFT VIN: 1FTZR45E84 Truck came in to the shop with a no power complaint. Codes p0172, p0175. Fuel pressure in spec at 65 PSI. Long term fuel(LTFT) read 16 on both banks at idle. Short term fuel trims(STFT) read 0 or 1 at idle. I replaced the MAF and the and the truck runs great n... Trouble codes: P0172, P0175	View
	2004 Ford F-250 Super Duty XLT 6.0L universal joint VIN: 1FTRX45654 came in for provincial inspection. all good exept for left front u joint and a couple tie rods. i want to change the u joint but i cant remove the axle.(driver side) it has a vacuum port on the top and a giant seal inside past the hubs. i removed the wheel bea...	View
	2008 Ford F-350 Super Duty XL 5.4L Misfire, MIL Lamp on VIN: 1FDWF36558 Looking for some ideas. Got this f-350 that misfires at start up. In the mornig,it might mis for 45 seconds to a minute, then pick up the cylinder and run fine the rest of the day. If it sits for an hour or two it might mis for 20 or 30 seconds before it start... Trouble codes: P0303, P0316	View
	2007 GMC Acadia SLT 3.6L Timing Chain VIN: 1GKER23767 We have a 07 Acadia 3.6L with a timing chain rattle on start up which lasts for 20-30 seconds so did some research to find that these engines have trouble with timing chains. We flushed the crankcase to make sure it wasn't sludge build up from the long oil cha...	View
	1988 Honda CRX Si 1.6L No oil pressure VIN: JHMED9365J Hi there everyone and thanks for the help. I have this 88 CRX in with nearly no oil pressure. The customer said the oil light started coming on all of a sudden. Thinking it couldn't be an engine problem because it did not sound to bad, i installed a new oil pr...	View
	2006 Honda Ridgeline RT 3.5L rack&pinion before I begin on the job I want to know how difficult it will be to take the Rack & Pinion because my Chilton Labor Guide says that it takes approx. 6.1 hours to complete the job so any would any help would be appreciative	View
	2004 Kia Sedona EX 3.5L park neutral switch VIN: KNDUP13134 got this one coming back for i dont now how many times. every once in a while it will not crank, put it in neutral cranks fine. i have not personally got it to happen. i have installed a bulb in the starter control circuit at the starter. she said that when it...	View
	2005 Kia Sorento EX 3.5L Cam plugs VIN: KNDJC73385 This one is eating me alive. I don't know much of prior history, though when I took it over, it looked like half the bolts had been replaced. The issue I am having is that the rear cam shaft plugs are popping out on me. This happens and then it just pukes oi...	View
	1999 Mazda 626 LX 2.5L Stall This Mazda went through an engine change (2.5L) for a blown headgasket. Engine from a 2002 was installed. According to the interchange books for the salvage yard, (a very reputable LKQ yard), the engine should be a straight swap. After the install, the engine ...	View
	2002 Mazda Protege5 2.0L Surge, MIL Lamp on VIN: FFJNFVDSG2 this one is driving me up a wall. came in with the map /pressure sensor disconnected.and the tank pressure sensor connecter at sender not plugged in all the way. and a missfire coade on cyl 1 from a plug wire that was not plugged in all the way and the lean co... Trouble codes: P0171	View
	1992 Mercedes-Benz 500SL 5.0L Excessive Emissions, Poor Idle Quality VIN: WDBFA66E2N Vehicle is difficult to start and after it does start, it blows black smoke. Vehicle is also running really rich. Idles at 600 rpm and is rough. Vehicle has long crank, sometimes 20 seconds before starting. Note vehicle cranks fast just like when you have a ba...	View
	1994 Mercedes-Benz S320 LWB 3.2L blower motor Thanks to all in advance, Benz tech. car came in with Blower motor inorperative, found that motor has 2 wires red and blue with the key on we have 12volts on the red wire and ground on the blue wire. now when we turn the blower swithe to and speed we have 12vo...	View
	2002 Mercedes-Benz ML320 3.2L starter VIN: 4JGAB54E22 Hey guys, i have a 02 mercedes ml320 with a clicking starter (moms car)have checked all the basics including battery terminals, fuses, bench test starter,swaped out starter relay in engine compartment and all checks out ok. I am limited to working on this car ...	View
	2008 Mini Cooper S 1.6L computer network VIN: WMWMF73538 ISTA/P was in use for software update, no specific problem, car ran ok. During download one of the modules locked. Car won't start or turn on its dash lights. MINI Tech support says the JBE is not being recognized or programming. They sent us a file to unlock ...	View
	1997 Mitsubishi Montero LS 3.5L Misfire, coil 1 not firing VIN: JA4MR41R7V This montero is not firing coil number 1 at all (top left coil, fires cyl 3 and 6). The coil has 12v at the blk/wht pwr wire, but receives no ground to fire. Good continuity from coil to ignition amplifier(blu/blk wire), amplifier has the same resistance throu...	View
	2001 Mitsubishi Eclipse GS 2.4L Balancer Belt VIN: 4A3AC44G51 Doing a timing belt, w/pump, and balancer belt on this car and my alldata is having server issues. Can someone tell me how tight to make the balancer belt? free play? i didn't pay attention to the amount of free play when i took it off. I know on h ondas if ba...	View
	1998 Nissan Altima GLE 2.4L cranks but it won,t start VIN: 1N4DL01D2W hello every one. I,m having a problem with a 1998 nisan altima 2.4l motor. This car came to shop about 3 month ago with overheating blown head gasket and locked motor. We install a junk yard motor new radiator and cooling fans. Motor run great. No problems wha...	View
	2003 Nissan Altima S 2.5L keyless entry VIN: 1W4AL11003 Hi Nissan techs, customer states that has had horn sounding and headlights flash at night. this vehicle does not have an alarm system only factory keyless entry fob and factory chipped key immobiliser. have not been able to duplicate prob in the 2 days vehi...	View
	2005 Nissan Altima S 2.5L 1ST gear engagement VIN: 1N4AL11D55 Car came to us for no engagement in D after cold soak. You can manually shift it to 1 and it will go in to gear and operate normally. Once the vehicle warms up, you can then put the car in D and it will shift normally. Reverse always works properly. Customer a...	View
	2007 Nissan Altima S 2.5L A/C Compressor VIN: 1N4AL21E37 Need some advise here, we have replaced this clutch 2 times keeps burning each time. Voltage to it 12v+ has anyone gone thrue this before i called the parts dept at nissan and he said to bring it for hes tech to check it and if nothing wrong with the electrica...	View
	2004 Pontiac Grand Am GT 3.4L engine VIN: 1G2NW12EX4 Has extended crank after fueling, no other time. She always fills the tank when fueling, if below 1/2 tank, is worse. Seems to run rough for a few seconds after starting. Sounds like vapor entering engine while fueling, has no codes and valves all seem to be w...	View
	2004 Pontiac Vibe 1.8L MIL Lamp on VIN: 5Y2SL628X4 Customer complains of CEL with an intermitant rough idle. P0171 continues to return, freeze frame data shows low RPM loaded with speeds from 10 -40 mph with stft of 5-10% and ltft of 30-40% when setting code. O2 sensors are both active. We have flushed injecto... Trouble codes: P0171 (Fuel system lean bank 1)	View
	2000 Saab 9-5 Aero 2.3L Stall VIN: YS3EH45G2Y Engine starts, runs for 5 seconds, then stalls. This performance is repeatable. The Crank Position Sensor has a resistance of 950 Ohms (AllData spec says: 860 +/-90 Ohms); would this be suspect? Appreciate help from the experts.	View
	2004 Saab 9-3 Arc 2.0L No Start VIN: YS3FD79Y04 Hi all in IATN land. Thanks for taking time to read this post. Got myself in a pickle. Car came from another shop with SRS light on. Had driver air bad code. Further testing revealed an open clock spring. Other shop supplied another CIM. It was used and wrong ...	View
	2004 Saturn Ion-1 2.2L wipers VIN: 1G8AG52F44 wipers phantom wipe when key is turned on -wiper switch off or unplugged .wipers only work on high and dont park .ground at motor good,same one for relays.scanner shows bcm activating relay command when phantom wipe. so something activating bcm when off and wo...	View
	2010 Subaru Forester X 2.5L Stall, Misfire VIN: 1F2SH6CCXA Customer has intermittent rough running/misfire. The car has acted up once for a short time for us. seemed to be running on 2 or 3 cyls.. No other code than the po303 and 304. Has anyone else seen this problem? I am thinking the ignition coil because it fires ... Trouble codes: P0303, P0304	View
	2006 Suzuki Grand Vitara Luxury 2.7L No Start, MIL Lamp on VIN: JS3TD944X6 Hey Guys The car came in blown head gasket and no start. We replace the engine and after that engine will not start. Code p0341 showed. Follow diagnostic guide lines, replaced cam sensor, replaced crank sensor, check wiring, replace ECM. Enigine will run at ... Trouble codes: P0341	View
	1991 Toyota Celica GT 2.2L Right front brakes Right front brake starts locking down after driving for about 10 minutes. I replaced the right front caliper and brake hose, thinking it was a bad caliper or hose. It wasn't. Old caliper and new caliper move freely. Something in the hydraulic system is causing...	View
	1998 Toyota Camry CE 2.2L Excessive Emissions, Poor Fuel Economy VIN: JT2BG22K1W Headache, please help, car came infail smog gross polluter, p0401 to low egr signal, install egr vsv and cat that took care og problem tretest car twice one pass emissions and fail monitors, the other test pass over all, customer took test on test only center ... Trouble codes: P0171, P0401 (Low egr)	View
	1991 Volkswagen Jetta GL 1.6L No Start, Stall VIN: WVWRG21G7M Customer came in at closing. He said engine has been getting hotter than normal during in town driving and had been quitting. Cooling fan is working according to him. I asked him about both speeds of the fan and he did not know. I have not diagnosed this veh...	View
	1994 Volkswagen Passat GLX 2.8L Stall, MIL Lamp on VIN: WVWJF4317R I got this 94 VW that resets these codes I cannot find many tests for it The o2 code says its rich and to check fuel pressure which is good. Would like to check the MAF but have no specs. At idle on one of the black wires it has 2.42 volts and rises with air f... Trouble codes: 00537 (Oxygen Sensor Control Control limit not reached), 00785 (sec air Inj system open/short to ground)	View
	2000 Volkswagen Passat GLS 1.8L security system VIN: WVWAA23BXY The customer wants to disable the security system on this vehicle. I have the ross-tech scan tool so I am able to do coding changes. I looked at all the resources I have to find what block I should be in and what coding needs to be changed. Any help would be a...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2000 Acura RL Premium 3.5L Misfire VIN: JH4KA9657Y Sorry about the delay in posting... I brought the customer back and checked the spark plugs and the rear 02 sensor 3 spark plugs were fouled out and the 02 was SOKED with injector cleaner?? The Tech must have emptied the whole can all at once to do that! 6 plu... Trouble codes: P1201 (Cylinder 1 Misfire), P1202 (Cylinder 2 Misfire), P1203 (Cylinder 3 Misfire), P0300 (Multiple Misfire), P1399 (Misfire Any Cylinder pending).	14
	2003 Audi A4 1.8L MIL Lamp on VIN: WAULC68E23 ok rechecked all hoses ans smoked tested again also used propane to check for leaks we put 200 miles on it and code hasent returned just a cat code p0420 my gut tells me its a throttle body but i wont know until the light comes back as well as the car since th... Trouble codes: P1297, P0102, P1564, P0300.	6
	2007 Audi A4 2.0L MIL Lamp on VIN: WAUAF78E57 the replies were most help full,the problem for evap code was the purge valave ,took engine cover off ,location is next to intake manifold on driver side ,came off in 5 minutes,blow thru it and yes the valave was stuck open,new one cost 18 dollars,installed,wi... Trouble codes: P0455.	5
	2000 BMW Z3 Roadster 2.5L srs VIN: WBACH9341Y replace srs unit with new,replaced both sensors under seat that were water damaged, all is well thanks for all the help,bmw stated that a used srs unit could not be reprogrammed,had other shops tell me they could, took no chances, new unit installed	7
	2006 BMW 525i 3.0L all windows and sunroof VIN: WBANE53556 the fix was the door latch assembly, thanks to all,bmw only part and they programmed it	8
	2001 Chevrolet Tracker LT 2.5L Cuts out VIN: 2CNBE63431 Thanks for all the info. Have not seen the car back for repair. Called the guy from back east, he was very helpful. When car returns we will be using him.	10
	2003 Chevrolet Impala LS 3.8L high idle VIN: 2G1WH52K43 problem was bad ecm,installed new ecm and programmed. thanks for the help	18
	2007 Chevrolet Silverado 2500 HD WT 6.0L Hesitation, MIL Lamp on, Reduced power VIN: 1GCHK24K27 This truck is fixed! Found wiring rubbed through on the main engine harness where it crosses the bank 1 coil assembly,one of the bolt/studs rubbed it way though the conduit and was shorting to ground. there was some extra wiring weighting the harness down onto... Trouble codes: P0641 (5 Volt Reference circuit).	2
	2007 Chevrolet Avalanche LTZ 5.3L No Start, Cuts out, Stall, MIL Lamp on VIN: 3GNFK12387 I have been over the harness back to front.Found no "holes" in the harness at all.Ordered a pcm connecter and found it is on back order.I have sprayed the pcm cnnecter with a connecter inhancing compound.This product is through worth.The truck has been road te... Trouble codes: P1516, P2119, P2135.	6
	2005 Dodge Magnum SE 2.7L Stall, MIL Lamp on VIN: 2D4FV48T35 Customer, was ok with what i told him. I wish that Dodge was more forthcoming with their diagnostic information. Trouble codes: U110A, U0121 (Lost communication with abs), U0141 (Lost communication with body cntrl mod), P0571 (Brake swithc a circuit).	6
	1999 Ford Mustang SVT Cobra 4.6L oil,clatter VIN: 1FAFP46V4X customer decided to take car back to the auction, apparently they have return policy that he decided to use,rather than tearing down engine.i still feel the problem was with valve guides,guess we wont know for sure.thanks for the good ideas,sorry i couldn't v...	12
	2001 Ford F-350 Super Duty Lariat 7.3L Brakes, Steering VIN: 1FTSW31F21 thank to all that replied. jon got it right. we still had air in the system. we bleed it again and added some royal purple anti foming fluid.	9
	2001 GMC W4500 Forward W4S042 4.8L blower motor VIN: J8DC4B14X1 When we power up the fuses everything worked fine it has a loss of power from somewhere customer needed vehicle back for there work, found a manual for it when it comes back ill post update	5
	1996 Hyundai Accent 1.5L failsafe mode 3 gear VIN: KMHVD14N1T thanks for all your help the car could'nt be fixed the owner is going to take the car somewhere else so thanks for the help again I tried changing the fluid atf+4 and changed the solonoid pack and the computer and nothing helped the problem thank you	6
	2004 Hyundai Sonata GLS 2.7L A/C Leak VIN: KMHWF35H54 Hi Techs Out there. Customer Declined Repairs for now due to Cost factors. No way of Confirming for now whether or not it was in fact the Evaporator.I was in fact using a UV Light and Sniffer to attempt to track down leak to no avail. I even Replaced Sniffer T...	16
	2004 Jeep Grand Cherokee Laredo 4.7L drivability VIN: 1J8GW48N84 This one kicked my tail !!! I had the head reworked and put it back together to find the tensioner would not tighten the chain. I put a tensioner in it and it helped but the codes came back. I then sent it to jeep for reproggraming and its quiet as a mouse. Th...	6
	2001 Mazda MPV DX 2.5L No Start VIN: JM3LW28Y51 Finally this van is fix with a special thanks to Michael from British Columbia, I follow His instructions, and Replace the PCM with a non Immobilizer unit, did move Fuel Pump Relay driver wire from pin #104 to pin #80 and lenght the wire by a couple inches on ... Trouble codes: P1624 (Immobilizer module missing).	6
	2004 Nissan Murano SL 3.5L waterpump VIN: JN8AZ08W34 Thanks all for your replies. The chain teeth seemed to just not want to let the pump pass without grabbing on. We didnt want to damage anything on the way out or the o-rings on the way on. Our solution? Can of budweiser! We cut the can and slid the aluminum un...	6
	2006 Nissan 350Z Track 3.5L No Start VIN: JN1AZ34D76 thank you for replies, the car has left my yard on the back of a tow truck headed to the dealer, ending my month long headache. im certain that the problem is in the ECU but after many failed attempts and much research, i dont have proper access to the info o...	5
	2003 Pontiac Grand Prix SE 3.1L MIL Lamp on VIN: 1G2WK52J73 Sorry for the late reply; I got busy the past few weeks and forgot about this request. The car is fixed. It turned out that the customer installed CMP harness had been wired to the sensor wrong. I had checked for this very early on and verified their work, ...	6
	1995 Subaru Legacy L 2.2L Surge, Cuts out, Stall VIN: 4S3BK6354S First of all, THANK YOU to all that replied. I took your sugestion on replacing the MAF, although I was very hesitant. The part isn't cheap, and I HATE throwing parts at cars to "try" to fix them without confirming the problem. I have been driving the car for ...	7

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