Quote:
Originally Posted by ioang26
Ok.I readjusted the EHA with 1/8 tunr CW and then another 1/2 turn on air screw and since that the car would run and would not stall but...idle is jumping between 500 and 800 rpms.
I let it run for at least 20 min and was still running.Tried to return the air screw to original position and then the same thing happen - would start and then short after stalls.
The EZL fault - it came to my mind too but can it be intermittent?
Any way to test the EZL?
BTW measuring Duty cycle on #2 and #3 pins shows 20%.
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What is the air screw to which you refer? Idle air is controlled by the Idle Speed Control Unit and the Idle Speed Air Valve.
A fixed Duty Cycle of 20% is an indication that there is a fault in the throttle position switch. An On-Off ratio oscillating about 20% is an indication of a fault in either the throttle position switch or the air flow sensor potentiometer.