I had stumbling at 3-4000 rpms through 6 or 7,000. reinstalled stock ecu because I was getting no indications on the pfc commander. ran the car same stumble, no codes, even though i removed some componenets and the wires for the AWS, EGR etc. GND to TEN. battery disconnected, depressed brake petal, started car another drive at checking boost patterns and still no codes.

later I found an open secondary injector. So I had items that should of triggered codes off the stock ecu.

How long does the car have to run before one gets codes? should codes of shown up while cranking? or what did I do that I did not get codes?

 

Any chance that the CEL dash light itself is not functioning? Did it come on with the ignition turned 'ON'?

 

yes it came on.

I thought to use the stock ecu because it can give more codes than the commander. took a bit of searching to figure out what were normal outputs on a commander.

Question, If one removes the wires suggested when installing a pfc and with a stock ecu installed then disables the car from starting perhaps pull the egi relay or unplug a crank angle sensor; how fast does one get codes for aws, egr, or crank angle?

I picked the crank angle because I think may be required to keep a car running and it may be easier to unplug than a thermosensor.

 

got car running. saturated spark plugs. took stock ecu through learn process. gnd to ten. battery ground to ten. no codes yet.

while in neutral took revs toward 7000 rpm. had resistance at 4800. is this normal on stock ecu?

will take for drive to try to get codes.