Automotive Technicians Technical Discussion and Fixes for Apr 30, 2006 - iATN (Members Only)

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Open Help Requests for All Makes and Models

	Help Request	Answers
	1998 Chevrolet Blazer 4.3L Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1GNDT13W5W on scan data in bay i show most missfires on # 2 and the next most on cyl#4 but under load all will have random missfire. i replaced the cap with a used delco cap and had different cylinders missing. i put on a new delco and rotar and truck barely ran also mis... Trouble codes: P0300	View
	1998 Chevrolet Cavalier 2.2L engine VIN: 1G1JC5244W Hi everyone, I'm getting a loud ticking noise at idle from the lower part of this 2.2L motor only after warm up. Noise seems to be from behind the timing cover. I've replaced the timing chain and tensioner with aftermarket parts with no change in noise. I've t...	View
	1999 Chevrolet Corvette 5.7L Shocks VIN: 1G1YY32G9X Road testing this Vette over speed bumps here a loud squeaking from shocks. I have isolated the shocks by squeazing on dust boot and can make noise go away. I have tried spraying some lube up the dust boot but still have the noise. Just wondering if anyone els...	View
	2002 Chevrolet Silverado 1500 5.3L warning lights VIN: 1GCEK19T12 when driving have intermitant coming on of ABS light and Security light shortly after Battery, all the warning lights come on and the gauges go to zero.replaced the fuze block with a new one from GM.cleaned and repaired all connections and had some problem.Nex...	View
	1998 Dodge Ram 3500 5.9L oil pressure guage VIN: 1B7MC33D8W With the oil at operating temp, when you stop the truck, the oil pressure drops to 0 for about 2 or 3 secomnds then goes back to normal. I duplacated this in the shop with a mechanical guage and when the press drop on the guage in the dash, the mechinacal guag...	View
	1994 Ford E-150 Econoline 4.9L steering VIN: 1FDEE14Y5R ford technicians, this van has no power assist, power steering pump was replaced & bled properly.steering linkage was cheked found no problems , except behind steering wheel where srs clock spring is located,theres a lot of play up & down, removed wheel theres...	View
	2001 Ford Taurus SE 3.0L No Start VIN: 1FAFP53U21 Hello techs,this one was towed in a week ago ,customer said it started running bad on the road,they pulled over and car shut off and wouldnt restart.This is a first time customer,so I have no history on this car.I checked the usual stuff on it ,fuel pressure o...	View
	1993 Mazda Protege DX 1.8L No Start VIN: JM1BG2243P hi fellow iatn members. this mazda was towed in as a no start. no spark,no fuel inj pulse,no mil on even key on engine off and it looks like no communication w/scanner. i am trying to run power and ground checks on ecu but there is a discrepency between mitche...	View
	1979 Mercedes-Benz 280SL 2.8L No Start VIN: 1070421000 This vintage grey market 280sl starts & runs great when cold & as long as you keep it running. However if you let it set for 10 or 15 min. It will just spin the stater & not crank up. It gets line presure of 78lbs. as soon as you spin the engine over. It's not...	View
	1981 Nissan 280ZX 2.8L Excessive Emissions, No Start, Poor Idle Quality, Cuts out, Misfire VIN: JN1HZ04SOB I've had this car on the side for about a week. for the past 3 days I've just been staring at it scratching my head. Heres one for all you old timers and even you new-jacks building your first hotrod. This is a 1981 280zx with a fresh engine (never been ran)...	View
	1997 Nissan Quest GXE 3.0L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: 4N2DN1119V This vehicle has an miss that floats from cylinder to cylinder. It can be seen on an ignition scope secondary pattern. The burnline is cut short down to 1 or 2ms and coil saturation begins immediately. This is what happens when the misfire occurs. I scoped the... Trouble codes: 1336	View
	2001 Nissan Sentra GXE 1.8L Stall VIN: 3N1CB51D01 Hope we can get some help with this Nissan. A few months ago it came in with a stalling complaint. We replaced IAC and all was good for about 2 months. Now its back with same problem. Removed IAC and found to be comtaminated with anti freeze. Replaced again th...	View
	1994 Plymouth Voyager 3.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 2P4GH2532R This code appeared after initial repairs to wifes Van was done at home. I feel like there is also a vacuum leak. The idle is at 2000RPM. I checked for proper wiring of the injectors and found that Mitchell and Alldata only give injector numbers as 1-6. NO loca... Trouble codes: 27 (fuel injection circuit)	View
	2006 Pontiac GTO 6.0L trans mission shifting VIN: 6G2VX12U26 sometimes the shifter feels a little rubbery in the sense that it becomes difficult to find the gear. at times it shifts a little better when the traction control is off and I am curious about any kind of shifter adjustment that can be done when I return it to...	View
	1999 Toyota Avalon XL 3.0L Drive-axles VIN: 4T1BF18B5X Car brought in for CV axles replacement as both sides of outter boots are broken and making noise on tight turns. After replacing with rem: axles, car is expereincing slide wobble during take off at the speed betweem 20 mph and 40 mph, and smooth out beyond 40...	View
	1999 Volkswagen Passat GLX 2.8L hand brake light,abs light, rpm surging VIN: WVWPD63B4X customer complaint abs light on, hand brake light is flashing, asr light on, rpm gauge fluctuate, some time koeo or engine running. there is a code po1138, 17546, system running lean. found broken hose at valve cover, replace hose. no luck, any body running in...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2003 Fiat PUNTO SPICE 1.25L Excessive Emissions VIN: NO VIN Thanks for all your replies , the problem was the lambda sensor before the catalitic converter. it seems that the sensor failed even the the dealer scanner. what we did is disconnecting both of the terminals of the battery and connected them for 10 seconds...	4
	1997 Ford F-250 XL 5.8L Hesitation, Cuts out, Misfire VIN: 3FTHF26H3V i was assigned to take this vehicle over after the other tech couldnt fix it. where as the engine compression and vac. were good i assumed it was an electrical/control type of problem. I installed a breakout box and printed a wiring diagram and starting with p...	7
	2002 Ford F-350 Super Duty Lariat 7.3L No Start, Stall VIN: 1FTSW31F52 IPR valve fixed it! The oil was right on the money and had 500 miles left before due. We inspected the oil level in the HP reservoir and it was good - 1' from the top. We did not notice anything strange about the IPR when we took it out but it does make sense ... Trouble codes: P1212 (ICP voltage not at expected level - Sets when cranking after stall).	10
	1995 GMC K2500 Sierra SL 5.7L Hesitation, Surge, Stall, Low Power VIN: 1GTGK24K1S The 13 replies I recieved basically pointed to three things. The first was excessive exhaust back pressure due to a plugged cat. The next time the customer can give up the truck we will be installing a test pipe to try and determine this. The second was wiring...	14
	1996 GMC K2500 Suburban 5.7L transferr case/ transmission VIN: 1GNGK26J0T Received a lot of great information as to the weak points in the transmission and transferr case on this vehicle. Haven't gotten to a repair as it's on the back burner while owner accumulates some more bucks. Thanks to all who responded, I'll let you know what...	22
	2000 Honda Civic EX 1.6L No Start VIN: 1HGEJ8143Y i received alot of responses to this problem. some of you said just because there is spark at the plugs ,does not mean there is enough spark in the combustion chamber. it turn out the spark i had was very weak. i replaced the coil and it started right up. than...	34
	2000 Hyundai Sonata GLS 2.5L air bag light on VIN: KMHWF35V9Y Well, thanks everbody that repied. Well, the biggest problem was my P.O.S snap-on scanner. It just wasn't working properly, if i turned it off then on, i would check codes and data just once, then i would loose it, turn the scanner off and on again and ssame...	4
	2000 Pontiac Bonneville SE 3.8L ride control hi techs,after ohmin all wires-ok,ohmed level sensor-was shorted.replaced sensor,all is good.thanx for the info.	5
	1999 Volkswagen Passat GLX 2.8L Excessive Emissions, Poor Idle Quality, Misfire VIN: WVWPD63B3X VW Friends Unfourtunatly this Passat V6 is still not fixed, however, much has been learned. First as one reply stated, the CEL flashes when the mixture is so out of whack it threatens the converters. Second as I mentioned in the original post the ABS & Brake...	9

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