problem

[slowbubblecar]

90 CAS
New power transistor
1g coil
new ecu
Car still does not get spark. 99% sure on the wiringbeing correct. Did it off of vfaq Any ideas? We will have to check the cas and other things later.

[Alpine TSi]

Have checked the crank sensor to make sure by some freak occurence it didn't get eaten by the crank or disconnected?

[slowbubblecar]

the crank sensor was wired into the 90 cas along with the cam angle sensor.

[slowbubblecar]

We put another working ecu in and checked the cas and saw it got power. The car still doesn't get any spark.

[slowbubblecar]

Anyone know other reasons it wouldn't get spark besides the ecu, cas, power transistor, or coil? We also put 1g wires on it.

[niterydr]

Lets go back to the basics here.
Does spark signal get to the transistor? Does spark signal get to the coil packs?
Its just like any other wiring issue, trace it back to where you lose signal, theres your problem. More often than not, people just automatically begin replacing shit because they heard it might be an issue instead of trying to solve the problem, they try to fix it. Its one of the main reasons dsms are consitered as shit boxes at times and are constered 'unreliable'.
How did you guys rule out the ecu?
Start at the beginning...How is the battery voltage?

[john]

What is the order in which spark travels? The only reason "shit was replaced" is because the car has a 1g head now. The ecu was ruled out by:

Throwing in another Eprom ECU
Throwing in another non-eprom ECU
All three ecus worked at one time.

I haven't had a chance to diagnos the problems yet. All I know it that the cas is getting power and there is no spark. Have not had time to check for signal. Is there a fuse that could have blown? I checked them all but they appear fine. I haven't checked for continuity though. Still no reading on the tack.

[john]

Eric came over and the car now has spark. Apparently the car did not like the coil off my old motor. The car still doesn't start though. The car sounds strange while cranking. Compression numbers dropped alot and are now at 75-75-125-75. Were at ~173 across before. New head, HG, valve seals, etc. Any ideas? Shouldn't the car still start with those numbers??? It sounds strange when cranking...

[JET]

75 is definatley down there. If it has a high leakdown % it may not start. With those #'s the head has to come off anyway to see what the problem is.

[john]

What kills me now is that it has a fresh head....