Well turns out it was the evil crank sensor! Thanks for all the help guys!

I did a visual inspection of sensor and wiring all looked good. Have not done a comp. check yet.

what factors affect timing when the computer is in open loop or (engine cold)? Only the crank sensor?

Tested spark, only had spark on cylinders 3 and 6 and that was week. switched back to original ICM.. i have spark again but it still cranks hard like before. any idea what kind of problems could kill the icm? Thanks

i disconnected it and there was no change.

Wiring to the crank sensor is good.. but not sure about the sensor itself. when it starts will idle rough for about 10 sec. then rpms go up and down 600 to 1300rpm then die. if I floor it for 1 sec. I can get it to keep running longer but I have to keep flooring it and letting off every few seconds ...

well, tried to start it today to take it to a mechanic. Can't get it to stay running at all. looked underneath at the cat converter and was bright cherry red. I disconnected the exhaust in the front of the converter and it made no difference in how it ran. (start idle for a few seconds and then die ...

I've already installed a new ICM but crank sensor could be a possibility still. Whats a good way to test the crank sensor?

Shouldn’t it be
6/3
2/5
4/1

Battery voltage is 12.7 cold, pulled plug wires off of plugs to see if that made it easier to crank and it cranked over as it should. Not sure about injectors I did do a leak test by removing injectors and pressurizing the system no leaks, the car has 160,000 mi. with a reman charger about 20,000 mi ...

Tested with a volt meter at ICM when turning engine over by hand, since they are just Hal-effect switches.As hard as it turns over cold do you think it could be low comp.? Plug wires all test good. Thanks for the help.

I double checked plug wire positions. positions are correct. I tested crank and cam sensors... both tested good. i have strong spark, it just seems to be at the wrong time. I'm not sure about plug wire resistance, but I had the problem before I changed the plug wires and it continued when I put the ...

fuel press. are 42psi key on, running 38psi. Spark plugs in wrong location is what it acts like but this problem started gradually just before I did the tune up recently. thanks for the help.

No compression check yet. but this seems to be spark related to me, when I can get it to run it will miss and run very poorly until it gets up to operating temp. gradually getting better as it warms up. I seems like it should crank easier rather than harder if it had low comp. A side note if I ...

last tune up was about 2 months ago along with a can of seafoam.

thanks

tried to start it with temp. sensor unplugged no change. also tried a junk yard PCM no change

I did clean MAF sensor and tried to start it with it unplugged no change.Have not messed with the idle control port how do u clean that? Should it set a code if it is bad enough to cause starting issues? thanks for the help.

Hard cold starts sometimes cant get it to start at all, turns over hard like timing is to far adv. starts good warm and runs fine after warmed up.No service engine light.I changed ICM, a coil, plugs and wires also the starter have tested fuel press. and most sensors. I am almost positive it is spark ...

I think I have a PCM problem on my 94 ssei. and was wondering if I install a new one or used do I need to have it "flashed"? Also what is a good brand to go with some brands mention needing flashed some do not. thanks

do you know if there is any way to test the PCM?