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throttle body time??
Posted 23 June 2005 - 07:14 PM
Posted 23 June 2005 - 07:48 PM
Posted 23 June 2005 - 11:00 PM
comparing this to when i first got the car its a very strange story..wouldnt pass emissions---too rich!! tailpipe black...o2 sensor black..warren, the smog guru tweaked this and that, still wouldnt pass...new o2 sensor, passed...few months after...going down a hill doing about 60, saw traffic was coming to a halt, pushed in clutch and took foot off of accelerator, cel came on, o2 sensor....about a couple of weeks before that, car started to ping a bit, gas mileage went to around 37 mpg...any type of load and it pings, heck, going east on 90, take the exit for north 5 and there is a little incline, pinged in first and pinged after i shifted to 2nd....
Posted 23 June 2005 - 11:28 PM
Posted 24 June 2005 - 09:01 AM
Posted 24 June 2005 - 09:10 AM
Posted 24 June 2005 - 02:09 PM
Posted 24 June 2005 - 03:14 PM
Posted 24 June 2005 - 03:21 PM
i would think clogged fuel filter restricting proper fuel delivery
thus making it run lean and ping
as far as carbon inspecting go get one of those itty bitty 1 AAA cell mag lites put it on a string pull a spark plug and drop the light into the plug hole and you can at least look in the cylinder
or a simple white l.e.d light on long wires with a battery on the end willw ork well as well
also check for leaks in the intake system from the maf to the throttle body and all the vacum lines ect
any leaks between the maf and the motor will cause it to run lean
getting more air from a leak thats not been metered by the maf sensor so its not injecting the correct amount of fuel
oh and plugged injectors will restrict fuel delivery also
i have 2 ea82t intake setups here with injectors and such
think you can limp it down to longview?
Posted 24 June 2005 - 03:26 PM
Posted 24 June 2005 - 03:57 PM
He drives it all over, so "limping" is not really an issue... just the miles/gas/time inolved. Plus, he would still be in Longview! :-p
Posted 24 June 2005 - 04:53 PM
Posted 24 June 2005 - 05:32 PM
Results on that would rule out a whole lot of stuff.
Posted 24 June 2005 - 08:53 PM
Posted 24 June 2005 - 11:10 PM
just seems strange that the car was running rich when i bought it, black tailpipe and o2 sensor...failed emissions...replaced o2 sensor...passed...going along fat dumb and happy and one day doing 60 had to dump the clutch and take foot off accelerator as traffic was coming to a stop and the cel came on with o2 sensor...pinging started soon thereafter and even was present when i disconnected the sensor...
Posted 25 June 2005 - 12:38 AM
...changed the maf...no difference...havent run w/o the maf, just know it idled the same w/o it.....
I reckon you should still take it for a drive with the maf unplugged.
My reasoning: If the pinging is indeed being caused by a lean mixture, one thing that could cause it is an inlet manifold leak. Without the maf connected, this leak wont effect the amount of fuel the computer puts in - it is set to run rich. If your car still pinks with the maf disconnected, you can all but rule out a leak as the cause.
Posted 25 June 2005 - 09:13 AM
will try out your idea this afternoon btwn trips for our moving day
Posted 26 June 2005 - 02:19 PM
Posted 26 June 2005 - 04:00 PM
whatever sensors you have (MAF and TPS in particular) - trace the wiring by hand. start at the sensor with the car idling. wiggle the connector first and see if it does anyting with the engine idling. gradually work the wires to that sensor between your fingers and gently bend them around...keep working your way back as far as you can go. if you hit a bad spot in the wires the motor will jump, stall, idle high, or even idle correctly if it's bad....it will show itself. i've found two bad wires this way, one on a TPS and one on a MAF. both were about 4 inches from the sensor. replacing the wiring helped alot. it's an easy quick check for a real PITA problem. and the TPS issue never threw an engine code ever. the car started running bad and eventually wouldn't even start and still no codes. after lots of swapping of sensors i found the TPS wires to be faulty.
be sure the throttle plate is opening/closing smoothly and completey. they can get stuck or sticky.
gotta go, good luck with this one.
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