If you have fuel pressure and spark, your EEC relay is functional.
Be sure plugs are not fouled.
I like your idea to make sure you're not out of phase on the dizzy timing.
FWIW, if you floor the gas pedal while (and only while) cranking, it shuts off your injectors. This helps clear a flood condition. It can help if you have not changed your cranking-fuel parameter in the tune.
Be sure plugs are not fouled.
I like your idea to make sure you're not out of phase on the dizzy timing.
FWIW, if you floor the gas pedal while (and only while) cranking, it shuts off your injectors. This helps clear a flood condition. It can help if you have not changed your cranking-fuel parameter in the tune.
The service manual you seem to reference should have a detailed run-down of the system.
The PIP goes through the TFI and then the signal goes to the EEC. It is modified and sent back to the TFI and then to the coil.
The injectors receive accessory 12 volts and the ground to them is what is modulated (and driven).
If his TFI module was acting up, he would not have spark.
Yes it does tell .it must skip so basics.like i said im learning and i did say plugs also.your knowage is much higher than mine .in eec4 no start it went from spark is good spout was next .if spout is fail than pip.if spout pass go to mass air.in fuel injector it looks like u need a breakout box. Can a test like on inject while cranking work or those injector lite kits?can his 3bar stop or any mass air stop pulse.speed pressure and temp sensor can they cause no start?
After studying i understand .am i correct with saying pip is first signal to pcm to start injectors.than if pin test a eec4 no start is proper step by step than thats were it got me.closer look its a short in harmess or maf.it says ck volts while cranking pin 36 spout to ground should get 3to6 volts if not ck pin 16 to pin 56 should be yes.so test shows you can have spark with problem still in pip area