Automotive Technicians Technical Discussion and Fixes for Sep 2, 2011

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	Help Request	Answers
	2001 Acura MDX 3.5L master cyl VIN: 2HNY028457 car came in with fadding brake pedal replaced brake master cylinder now i have a rock hard pedal like bad booster. vacuum hose from intake to booster has two check valves in it replaced hose with no and no change. replace vacuum hose with straight hose with no...	View
	2003 Audi A4 1.8L noise VIN: WAULC68E43 This vehicle came in with the codes listed, we have no history on the car. It runs well but after about twenty minutes it gets noisy at the rear of the cylinder head in the area of the cam chain. It looks like the timing belt and tensioner have been changed an... Trouble codes: P0011, P0012	View
	1994 BMW 740i 4.0L low speed fan VIN: WBAGD4322R this vehicle is kind of strange, when the a/c compressor is turned on , there is no fan operation, but the compressor is on, then it will shut off and the fan will come on, We have checked the resistor, the fan, the relays, the switch on the radiator and conti...	View
	1995 Buick Regal 3.8L No Start, long crank VIN: 2G4WB52L2S This car has an intermirrent long crank/no start, mostly when hot. It can be running fine, then you can shut it off and immediately crank it and it will not start for 5 - 30 seconds. Then it will start to catch and finally start. Spark is present and very ho...	View
	1998 Chevrolet Cavalier 2.2L Misfire VIN: 3G1JC1242W I need help with a cavalier that has a very intermittent misfire or fishbite. No misfires counting on solus. while taking movie of the event the car runs a steady 11+ms for the injector pulse,at about 2500rpm/25% throttle and a slight load ie going up a hill/ ...	View
	1999 Chevrolet P30 5.7L Hesitation VIN: 1GBH32R1X3 Need all the help i can get the problem is it is not all the time when it dose it add less last for 15mins some times or 10mins Trouble codes: P0719 (Brake switch low input), P0507 (Idle control system-high rpm)	View
	2000 Chevrolet Cavalier 2.2L Steering Pump I don't have a pressure gauge or a flow tester for this system. When starting the vehicle there is no noise from the power steering. Also, the fluid is full and looks foamy. I flushed out the fluid because I didn't know what was in it and put in fresh fluid. I...	View
	2001 Chevrolet Impala 3.8L Cuts out VIN: 2G1WH55K11 hey to all chevy gurus - got this impala that has backfired through the intake, melted both the intake air temp sensor & the air mass sensor. seems that there was a big firs ball that traveled through the intake to the air filter because the air filter is burn...	View
	2002 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHK29192 This Duramax was having a long crank to start for a while. It came in as a no start. I found a rotted fuel line and repaired thinking it was sucking air into the fuel line and not starting. After repair it still would not start. If you squirt some type of fuel...	View
	2003 Chevrolet Silverado 2500 HD 6.0L MIL Lamp on VIN: 1GCHC24U73 someone has changed pigtails at both tp snsrs we tried changing both snsrs and module Trouble codes: P0120, P2135 (tp snsr 1-2 correlation), P0332	View
	2005 Chrysler Pacifica 3.5L Misfire, MIL Lamp on VIN: 2C4GM68415 This car only codes when it has been run about twenty miles as soon as it downshifts into passing gear with heavy acceleration. I have been all over the wiring looking for shorts or bad grounds. Can not find any. This one has me puzzled any help would be great... Trouble codes: P0339, P0300	View
	1999 Dodge Durango SLT 5.9L No Start VIN: IB4HR28Z1X Need help! dodge came in engine cranks but will not run. Checked spark o.k checked fuel pressure it was at 40 p.s.i put fuel down throttle body engine runs. Turn engine off and try to restart engine will not run ! installed new fuel pump now pressure at 46 p.s... Trouble codes: P1389 (No auto shut down relay output voltage at pcm)	View
	2000 Dodge Ram 1500 Laramie 5.2L Poor Fuel Economy VIN: 3B7HC12YOY 10mph average of city and highway. No driveability issues. No DTCs. 10mpg seems too low even for a truck with [...]. EScan Pro tells me fuel control is being maintained and vacuum is within spec. Don't know why Dodge only put an O2 on bank 1 on these thing...	View
	2001 Dodge Ram 2500 5.9L engine VIN: 3B7KF23701 engine has water in oil &oil in water-engine doesnt miss or run bad-pressured tested cooling system-loosing pressure but not externally-is there a way to test oil cooler or am i looking at pulling head? i dont know if there are any specific tests i can do befo...	View
	2007 Dodge Ram 1500 SLT 4.7L suspension VIN: 1D7HU18N17 Good morning everyone. I'm having trouble with a front end noise in a 2007 Dodge Ram 1500. There is a loud clunking noise coming from the right front of this truck that comes when hitting the smallest to the largest bumps in the road. This truck has been to tw...	View
	2010 Dodge 1500 4.7L Hesitation VIN: 1DFRB1GPPZ Cust states truck sounds like its missing, we cannot confirm this. Code P2098 remains in memory, and BSS2 moves very little compared to B1S2. O2 looks new cust says dealer installed it. Wiring looks OK. Help please, My resources are a bit limited(weak tech). T... Trouble codes: P2098	View
	2004 Ford F-150 FX4 5.4L Cuts out, VIN: 1FTPW14564 car was brought to my shop because intermitantly while driving the security light will come on solid and it feels like you are losing throttle. the car will not accelerate but all other functions are working like radio, blower, instrument cluster etc. as soon ...	View
	2004 Ford F-250 Super Duty XL 5.4L Stall, MIL Lamp on VIN: 1FTNX21L34 Any points of checking that perhaps I have overlooked? Voltage seems low and I am guessing it bases out of the CJB just wanna be sure. Trouble codes: P00, 231 (Fuel pump secondary circuit low)	View
	2006 Ford Freestyle SE 3.0L Valve Train VIN: 1FMZKO4116 This free style jump time on exhaust cam that drives water pump.Pumped air into cylenders to check for bent valves.center cylenders on both head leak from intake ports,But this did not jump the intake cam shafts it only jumped one exhaust cam.Is there a reason...	View
	1999 GMC Jimmy SL 4.3L trans. shift VIN: 1GKDT13W9X Vehicle came in with a toasted trans., couldn't get a good test drive because of slipping from the start. Did notice that Trans. would skip 2nd gear., as stated earlier fluid was really bad. OK installed Jasper Reman. unit still skipping 2nd gear and really do...	View
	2004 GMC Sierra 2500 HD 6.6L Poor Idle Quality, Misfire VIN: 1GTHK23264 Truck makes loud knocking noise and puffs thick black smoke. Sounds like detonation knock. Used modis to manually shut down injectors found that when injector number 2 was disabled the knocking stopped and the smoking stopped. Checked wiring at FICM and a inje... Trouble codes: P1223, P1226, P1229, P1232, P1235, P1241	View
	1999 Honda Accord EX 3.0L Misfire VIN: 1HGCG1653X Have checked every possible thing i might have done wrong, even smoked it, nothing, even put in new plugs and checked timing mark- aligned perfectly. And all i see in this tsb for fuel pressure regulator and ecm. Could there be something else i am missing and ... Trouble codes: P0301 (p0302-), P0302 (p0304-), P0304 (p0305-), P0305	View
	2001 Honda Accord LX 3.0L Poor Idle Quality, MIL Lamp on VIN: 1HGCG22541 This Honda idles very poorly. Has random misfire code and misfire codes for all cylinders. All cylinders have 170psi compression and new spark plugs. Smoked out intake and found no vacuum leaks. Removed EGR valve, and made sure it was not stuck open. Even bloc... Trouble codes: P0300 (Random Misfire Detected), P0301 (Misfire Cylinder 1), P0302 (Misfire Cylinder 2), P0303 (Misfire Cylinder 3), P0304 (Misfire Cylinder 4), P0305 (Misfire Cylinder 5 and P0306 Misfire Cylinder 6)	View
	2006 Land Rover Range Rover Supercharged 4.2L MIL Lamp on VIN: SALMF13426 The parts captioned above were replaced about 30 days ago and teh codes reappeared this past week. I have been driving the vehicle the past few days hoping to capture o movie of the occurance, so far no problems cropped up. Being as the same codes have set I t... Trouble codes: P0116 (Coolant temp sensor range/performance), P0160	View
	2002 Lexus RX300 3.0L Power locks VIN: JTJHF10U92 Hey all, Got the bosses' truck in today. I'll try to keep it short n simple, just looking for a little direction, don't want to spend too much time diagnosing. Issue with this RX is that when the car is off, doors closed, power door locks do not work at all f...	View
	2005 Lexus LS430 4.3L MIL Lamp on VIN: JTHBN36F75 Hello everyone, and thanks in advance for any help you folks can give me. This has been the week from hell here in NJ. I have a Lexus 430 in the shop. It had a code for the #1 Bank #1 O2 sensor(P0031). I got a O2 sensor (bosch) down the street and let one of m...	View
	1991 Mercedes-Benz 560SEC 5.6L Poor Idle Quality, Misfire VIN: WDB1260442 hi guys this car came from another shop,they did head gaskets.vehicle is missing ever since.I traced the fault to no.4 cyl,its dead.When i remove spark plug no change in engine note.So far i have swopped spark pulg,plug lead,injector,moved injector feed line t...	View
	2000 Mercedes-Benz E320 3.2L instrument cluster VIN: WDBJF65G4Y customer brought in 200 mercedes e320 for a/c not operating,we found a/c control head was bad,control head was replaced now instrument cluster will not light up,help please	View
	2005 Mercedes-Benz C230 Kompressor 1.8L Electronic VIN: WDBRF40J25 ESP light is on in message center and the Shifter will not come out of park.Code 2404 stop lamp switch signal from traction control via can bus is implausible.I have tried the pressure switch in the master cylinder.This car does not have a separate brake light...	View
	2000 Mercury Sable GS 3.0L Misfire, MIL Lamp on VIN: 1MEFM55S5Y thanks in advance,replaced spark plugs,ignition coil #2, repair vacuum leak egr gasket, fuel filter.this is the only leak found with smoke machine. misfire noticeable. clear code. next day all code came back.i am not workig on trans code po741 yet. i want to f... Trouble codes: P0171, P0174, P0302, P0741	View
	2004 Oldsmobile Alero GL 2.2L No Start VIN: 1G3NL52FX4 i have this olds here that i put the electrical part of the ignition switch in and now it will not start. im thinking security system but it will not flash the security light. it has no fuel pressure and no injector pulse. can anyone help me	View
	1991 Pontiac Sunbird SE 3.1L No Start VIN: IG2JB34T6M car sat for 1 year ,filled tank with freash fule drove car 1/2 tank and it stipped running. Fule filter bwas clogged. Replaced and would not run , no injector pulse , replaced injectors and had 47 lbs at rail. Have 12.7 volts at injectors and the pulse. Car wa...	View
	2001 Pontiac Aztek 3.4L Rear Hatch Release VIN: 3G7DA03E41 Customer googled problem, and found out that pulling the #28 fuse(bcme), and reinstalling would allow release to operate normally for one cycle of the key. The fuse would have to be removed, and reinstalled again to make the release work for one key cycle.	View
	2001 Toyota Sienna LE 3.0L battery VIN: 4T3ZF13C6Y at idle voltage consistantly drops from 14.20 to 12.04 in a few minutes	View
	2001 Volkswagen Passat GLS 1.8L radio VIN: WVWPD63B21 Hello everyone i have a 2001 vw passat 1.8t with Monsoon radio system .customer replaced it with a cd player, now it will not communication with my scaner. is there any konw how to bypass the wire so it communica. Thank you for your help. Tuan [...]	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1996 BMW 328i 2.8L Lid operation VIN: WBABK8329T Installed new top rods. The lid still will not close after the bowe is fully lifted (tried pushing on the bowe also). Refering it to a shop with a scanner that can access the module.	3
	1994 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP52L9R Hello Gentlemen, many thanks to all who helped me with this one, I disconnected the cruise control diphragm unit as this has a sensor inside that tells the ECU what position its in OK, well with the CC out of the loop so to speak the car runs perfect, the cust... Trouble codes: P1361, P1568, P1599.	9
	1991 Chevrolet Corvette 5.7L No Start VIN: 1G1YY2388M Vehicle fixed, The drain hole next to gas gap got plugged and alowed water to enter fuel tank. Contaminated fuel was the answer, I looked past the easy solution thinking it was good because the customer told me it was running one day and not the other. thanx i...	17
	1995 Chevrolet K2500 Silverado 7.4L ABS Light VIN: 1GCGK29N5S Cleaned wheel speed sensor,still no 350ACmv replaced hub bearing with new speed sensor, fixed issue. Thanks	10
	1998 Chevrolet C2500 Cheyenne 5.7L No Start, VIN: 1GCGK29R5W Many of the replies, suggested to let vehicle go, problem with ECM ignition fuse blowing. I let the vehicle go with a few minor changes. I decided if the vehicle was released, to give the customer some reassurance.I replaced the fuse with a non-cycling circui...	12
	1999 Chevrolet Tahoe 5.7L Hesitation VIN: 1GNEK13ROX Well as stated in request fuel pump was replaced and no change, ended up removing spring from fuel cap vent valve and problem disappeared. Cust completed several hundred mile vacation while towing his camp trailer and no symptoms and even stranger, no ses la... Trouble codes: P0131, P0137, P0151, P0157.	22
	2002 Chevrolet Trailblazer EXT LT 4.2L MIL Lamp on VIN: 1GNDT13SX2 I have replaced the "solid state" relay. The customer has reported it is fixed. Scott and Germano hit it right on the head. Other replies said to replace fan clutch, update PCM, and check for chaffed wires. Thank you all for the help. Trouble codes: P1482.	11
	2006 Chevrolet Silverado 1500 LS 4.3L Cuts out VIN: 1GTEC19X76 Welp this one is fixed. After testing coil, ICM, Crank and cam sensor and replacing with test parts I got the same thing. Then vehicle finally decided to not start at all. Test powers and grounds. Was adout throw in the towel. Was checking for pulse at coil fr... Trouble codes: P0449.	8
	2009 Chevrolet Malibu LT 2.4L No Start VIN: 1G12H57B09 sent to dealer they installed a new ecm and all is well no charge.i dont know what happend when baterry terminal was cleaned Trouble codes: U0100, U2105.	13
	2001 Dodge Durango 4.7L No Start, Poor Idle Quality, Cuts out, Stall VIN: 1B4HK28NX1 i requested help to either confirm my diagnosis and proceed with repairs, or for suggestions that my diagnosis was incorrect or that more testing was needed. not one agreed with my findings, which is helpful because i do not want to waste customer's $ on an ex...	7
	1999 Ford Explorer Sport 4.0L Unknown VIN: 1FMYU24X0X thank you for all the help after inspecting everything that was sugested i found right rear emergency brake cable binding the bracket near the rotor had cut into sleeve and rusted.	12
	2003 Ford Mustang 3.8L Mechanical VIN: 1FAFP40493 Thanks to everyone who helped on this vehicle. What we ultimatly ended up doing was reducing the charge in the system by about 4 tenths. This allowed the duct temp to reach about 44 degrees, the hi side charge was still alittle hi, around 315 or so on a day t...	10
	2005 Ford Crown Victoria Police Interceptor 4.6L Cuts out, Stall VIN: 2FAFP71W85 even though the throttle plate was not that dirty i cleaned it and so far no more complaints	11
	2005 Ford Focus ZX3 2.0L Mechanical VIN: 3FAFP37N85 went out the bottom not bad after you get rid of the manifolds.thanks people	9
	2006 Ford E-350 Super Duty XLT 6.0L Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 1FDWF37P96 Thanks to everyone who responded to this request. We were pretty sure that the egr cooler was the problem, but we just hadn't jumped into one to this point. We replaced the egr cooler and oil cooler at the same time, though the dealer we got the parts from st... Trouble codes: P1335 (egr pos. sensor minimum stop performance).	9
	2006 Ford Taurus SE 3.0L Needs Engine Swap HALLO TO EVERYONE !!YOUR RECOMENDATION FOR ENGINE REMOVAL WAS RIGHT ON MONEY , I REMOVED HOOD FIRST AND THEN INTAKE MANIFOLD, AND ALL RELETED VACUUM HOSES, THEN WIRING HARNES , HARDEST PART OF ALL WAS EXHAUST SYSTEM , CATS ARE B--- TO GET OUT . SOME BOLTS GO...	8
	2007 Ford E-150 XLT 5.4L Mechanical VIN: 1FTPW14V87 I feel pretty stupid right now. Cylinder 8 spark plug was loose. I guess the thought hadn't occurred to me considering this is an engine that you usually can't get the plugs out of. I have never encountered a noise like this coming from a loose spark plug. Sou...	5
	2008 Ford E-150 4.6L Poor Idle Quality, Hesitation, Cuts out, Stall VIN: 1FTNE14W48 We ended up finding two bad injectors. Cyl 6 and 8, although 6 was removed from vehicle and flushed, we had to replace cylinder 8 injector. The injector would work fine until it was hot. Thanks for your help! Trouble codes: P0171, P0174, P2195, P2197.	13
	2003 GMC Safari 4.3L brake light fuse, no high mouth brake light VIN: 1GKDM19X43 it's fixed...thanks to all the techs who took time out of there day to help, most replies said that the white wire at the brake light switch was for the high mount brake light, one said that it also went to the trailer harness, oohhhhhh???,and since the high m...	9
	2006 GMC Yukon XL 1500 SLE 5.3L No Start VIN: 3GKFK16Z46 wel i can no longer say it's not the computer on gm obd2. replaced and program new computer and all is well. other than early 6.5 diesels i have never had to replace a gm computer with obd2. wish i could say the same for ford and chrysler. thanks to all who to...	12
	2002 Jaguar XJ8 4.0L Surge VIN: SAJDA14L32 sorry for the delay on a fix ,,, internet was down from a storm called dealer , throttle body issue not covered due to age of car ,, that is what i was told ,, i suspect either a module is wet or a throttle body problem ,, customer decided ...	3
	1999 Jeep Grand Cherokee Laredo 4.0L No Start VIN: 1J4GW58S1X Crank sensor was the culprit in this case. Weird it went out about 5 miles after car was picked up. The sensor was zip tied to the bell housing. Changed it with an OEM sensor and all is well, thanks for all replies.	24
	2007 Mercedes-Benz ml270 2.7L ride control VIN: WDC1631132 i have fitted another reco steering rack from the same supplier,but is still not right,my contact at mercedes says the problem lies in the control valve in rack control unit,this valve wears slightly and floats in the bore,and can direct oil flow to opossite s...	3
	2001 Saab 9-3 2.0L Refueling VIN: YSDD58H012 I am going to call this one fixxed. All the ideas were great and I thank for them but it ended up being a faulty sending unit giving the wrong fuel level readings. We installed this about two months ago that is why I didnt mention it in this post. We did check... Trouble codes: P0340 (Camshaft position circuit A bank 1 or single cylinder), P1312, P1334.	11
	1991 Toyota Pickup 2.4L No Start VIN: JTYRN13P9M THANKS TO TECHS THAT REPLYED TO MY REQUEST. THE EFI RELAY IN UNDERHOOD FUSE BOX WAS THE PROBLEM.	7

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