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What could problem be?

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Old Dec 8, 2009 | 09:13 AM
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Caleb56's Avatar
Caleb56
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From: jojobe Tx
Default What could problem be?

So yesturday i drove my car to work and i smelled coolant, pulled over and noticed heater core was going out. I got to work and bypassed the heater core, next thing you know my car seems like its being held back if you really hit on it, with an occasional surge in power. No water in oil, and its not smoking, car also sounds just fine unless you try to give it gas. Im thinking fuel filter, i just find it so coincidental that it could have clogged the same time as the heatercore going out.
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Old Dec 8, 2009 | 09:19 AM
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It does sound like a fuel filter.

What year is your car, BTW? any significant mods? Some years if not all use vacuum to power the heater valve. Make sure the vac line is not leaking there.

Another suspect would be the TPS. You can test it with a volt meter and back-probe it. It should smoothly run from near zero to near five volts as the throttle is opened.

You didn't disconnect it while jockying with the heater bypass did you?
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Old Dec 8, 2009 | 09:40 AM
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Caleb56
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From: jojobe Tx
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Originally Posted by 94z07fx3
It does sound like a fuel filter.

What year is your car, BTW? any significant mods? Some years if not all use vacuum to power the heater valve. Make sure the vac line is not leaking there.

Another suspect would be the TPS. You can test it with a volt meter and back-probe it. It should smoothly run from near zero to near five volts as the throttle is opened.

You didn't disconnect it while jockying with the heater bypass did you?
Engine rebuilt to 383, brand new. 1989 corvette, and yes it uses vacuum to power the heater valve. Thanks for some more options to probe.
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