:driving: Turbo Boost Gauge readings

[NoDOHC]

If the idle is above 750 and the engine is warm, the BAC should be shut. If you unplugged it and the pulsation didn't go away, I doubt that it is the issue. The stock ECU has a 'hole' in the timing map to make the engine idle down while getting excessive air and fuel (5 degrees ATDC). If I program a similar hole into my Haltech, it will do the same oscillations if I set the idle too high. Seriously, try adjusting the idle down to 750 with the check jumper connected and then see what it idles like.

This still doesn't explain why the engine is running at such low vacuum. You said that it revs very quickly from idle if you floor it?

Are you sure that the timing is correct?

By press the TPS in all the way, you mean floor the gas, right? Pressing in the TPS without moving the pedal shouldn't make the engine rev to the redline.

[nvno1]

Originally Posted by NoDOHC

If the idle is above 750 and the engine is warm, the BAC should be shut. If you unplugged it and the pulsation didn't go away, I doubt that it is the issue. The stock ECU has a 'hole' in the timing map to make the engine idle down while getting excessive air and fuel (5 degrees ATDC). If I program a similar hole into my Haltech, it will do the same oscillations if I set the idle too high. Seriously, try adjusting the idle down to 750 with the check jumper connected and then see what it idles like.

This still doesn't explain why the engine is running at such low vacuum. You said that it revs very quickly from idle if you floor it?

Are you sure that the timing is correct?

By press the TPS in all the way, you mean floor the gas, right? Pressing in the TPS without moving the pedal shouldn't make the engine rev to the redline.

This is going freak you guys out..

the car starts after a few cranks(no bac connected) ..however if i play with the pedal it starts up..stutters a little then she picks up...i have to play with the gas at little to keep her running. after about two mins of that she will run with no pedaling of the gas pedal. she is still looping.

when under the hood and i press in the TPS plunger, not by way of the pedal, the rpms start climbing.......crazy i know.. the timing was set by way of the FSM...aligning the second notch(if facing the car,second notch to the right) on the main pulley to the needle on the front cover(gslse) and the cas has been removed and placed back with the little circle mark on the gear wheel with the pointer on the shaft on the cas.

[RETed]

Originally Posted by nvno1

front cover(gslse)

Ar you using the GSL-SE CAS too?
If not, can you verify that the GSL-SE and FC front cover pin locations are identical?
I don't like the idea that you're mixing and matching parts like this...


-Ted

[nvno1]

Originally Posted by RETed

Ar you using the GSL-SE CAS too?
If not, can you verify that the GSL-SE and FC front cover pin locations are identical?
I don't like the idea that you're mixing and matching parts like this...


-Ted

Hey Ted,

i had no choice but to use the GSLSE front cover it a TII swap in a GSLSE. and the GSLSE uses a dizzy. im using the cas that came with the 87 motor. the pin looks to be in the same location.