Totally.
what dose code mean
Race Director
Joined: Sep 2000
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From: The Top of Utah
Originally Posted by imp65409
Since you may not have the money for the Helms manual I would suggest you get the Haynes corvette manual at Autozone. I think the manual is like $20.
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Drifting
Joined: Apr 2007
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From: port charlotte fl
4th Gear
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Advanced
Joined: May 2007
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From: Loves Park IL
I agree that the FSM is the only way to go. I agree that the other manuals are lacking info. But since he stated that he does not have the money for the fsm....he is left with little choice. If he had the money for the FSM then by all means use it. just trying to help the guy out. Dave
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Joined: Sep 2000
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From: The Top of Utah
Originally Posted by staugur
You may want to think about an adjustable TPS rather than the fixed one.Not much difference moneywise.
HUH???
How do you NOT buy an adjustable TPS for a 1989 and earlier C4?
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Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by imp65409
But since he stated that he does not have the money for the fsm....he is left with little choice. If he had the money for the FSM then by all means use it. just trying to help the guy out. Dave
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Race Director
Joined: Sep 2000
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From: The Top of Utah
Originally Posted by staugur
sorry not paying attention 90 and up are fixed!! must be the spelling.
The TPS in the '90 and up IS non-adjustable, but changing to an adjustable TPS accomplishes nothing.
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Drifting
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From: port charlotte fl
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Pretty much for the same reason the later TPSs aren't. 1989 and earlier ECMs are programmed to see ~.54 volts to indicate a closed throttle. Starting in 1990 the ECMs got smarter. They look at the TPS voltages and know to sort through the voltage readings and accept the lowest reading as closed throttle. Adjusting a 1990, up, TPS accomplishes nothing because the ECM will interpret the lowest reading as closed throttle.
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PS. I found that in my 1984 FSM. And also, NO C4 has a low oil pressure fuel cut off.
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PS. I found that in my 1984 FSM. And also, NO C4 has a low oil pressure fuel cut off.