1991zcef

i had my dohc zc for a while now i was runing the stock pm6 with my motor i decided to swap the ecu as well when i hooked the pg7 ecu to the car and started it it was runing fine untill it started doing funny ---- like reving itself is this because of the different timing or do i need a fpr im runing intake header exhaust anyone know how to take care of this issue plus its running rich

ssl2k

Check your PCV valve and EAVC? sensor...

messed up idle isn't becuase of the ecu usually..

maybe it is a vacumm leak?

1991zcef

it wasnt doing that when i had the pm6 and the sensors are ok about leaks their all good as well anyother suggestions

Dr.Boost

Unless the ECU is ----, you have some other problem. Was any other work done recently? Check your sensors. Check vac leaks, check the ECU connection.
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1991zcef

the connection is right and no other work has been done to the car the idle is at 1100 rpm i even swaped the box to make it fit on its original location and rechecked the connections and their pluged in right its probably the ecu and it wasnt runing rich when i had my other pm6 and no it is

bumblezc

I have had this problem on both 1.5L DX's(Dual-pnt) and my ZC with a PM6(Turboedit) and PG7 ECU

Solutions:
Dual-point was a Maniflod Gasket leak(aka VAC leak)

PM6 and PG7
Idle adjustment screw was slopping so it would slowly back itself out, speeding up the idle. The ECU looking for the TARGET idle would adjust and then over compensate dropping the revs down to 500rpm, try to correct, up to 1500rpm or so, and just kept repeating. I re-adjust the screw, used some gasket sealent to stop it from backing out, NO PROBLEM TO THIS DAY.

1991zcef

cool cool thanks for the help guys peace