timing/ecu? harmonic balancer off?
07-09-2011, 11:35 AM
#1
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Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
timing/ecu? harmonic balancer off?
car runs no matter where i time it. however the wierd thing is it dont backfire or smoke when base timing is set atdc for that matter uses alot less gas too? base time at 6deg. btdc in it backfires on deceleration, smokes and sucks the gas.? u guys think my ecu fried or maybe harmonic balancer off?
07-09-2011, 01:15 PM
#2
Re: timing/ecu? harmonic balancer off?
Whas the problem? What r u trying to achieve? EST Pigtail disconnected and set timing at 6*. Reconnect pigtail, disconnect battery to reset the TC 42. Then your set. Keep in mind that you have a v8 which does drink gas compared to a sipping 4 cylinder.
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07-13-2011, 11:23 PM
#8
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Re: timing/ecu? harmonic balancer off?
Het Guys, Sorry for the delayed response. Ive been real busy with my new job. Code 32 is fairly common. Usually caused by a failing EGR temp sensor. You would also get this code if the EGR valve was stuck open but the car would idle very rough, if it would idle at all. More likely it's just the sensor. There's a tech article on the fix here on TGO.
As far as your timing issues go, Ill repeat what 86IROC said about setting timing with EST disconnected. Be sure to clear code 42 afterward to insure proper function. If you still have drivability issues, you either have the wrong balancer(Some SBCs had the timing mark at 12oclock. Others, like the F-body, have their timing mark at a little past 1oclock. The balancers will interchange as far as fit goes. The timing mark will be about 30degrees off with the wrong one on an engine. Or your balancer's elastomer has slipped. Another reason to like fluid dampers.
Misalignment of the cam and crank(timing chain) will cause the timing to read way off but more than a few degrees and the engine wouldn't run at all.
As far as your timing issues go, Ill repeat what 86IROC said about setting timing with EST disconnected. Be sure to clear code 42 afterward to insure proper function. If you still have drivability issues, you either have the wrong balancer(Some SBCs had the timing mark at 12oclock. Others, like the F-body, have their timing mark at a little past 1oclock. The balancers will interchange as far as fit goes. The timing mark will be about 30degrees off with the wrong one on an engine. Or your balancer's elastomer has slipped. Another reason to like fluid dampers.
Misalignment of the cam and crank(timing chain) will cause the timing to read way off but more than a few degrees and the engine wouldn't run at all.
08-04-2011, 08:47 AM
#10
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Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
Re: timing/ecu? harmonic balancer off?
ok did timing as u described however now after bout an hour of driving im getting relly loud backfires out the exhaust.
08-04-2011, 07:01 PM
#11
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Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
Re: timing/ecu? harmonic balancer off?
found prob just happened to look up under all junk on top of motor and found the vac.line that goes to the egr temp sensor melted to the intake.
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