Bad ecu?
 

Ok... most of you now know my motor and car. It fires on the #2 all the time, but it hits #1 #3 and #4 every once in a while. Bad ecu? It was chipped by xenocron. IT gets fuel and all but just the spark problem now. Maybe this would explain why it didnt rev that well.

Re: Bad ecu?
 

Everything else on your ignition system checked out good? Did this just start happening when you got the chipped ECU?

Re: Bad ecu?
 

simple have solid check engine light just a solid red yes ecu is an issue if not than its wiring/sensors

Re: Bad ecu?
 

The only CEL is for the IAT. I put new plug wires in and all and same results. Could this be because my dizzy is only held by the top mount? It is solid and all. When i take the chip out, it is a solid red. But when i put it back into the socket it flashes 10 times, which is the IAT. Would any wiring from the MPFI swap be the problem? Anyone have a MPFI swap harness for sale?

Re: Bad ecu?
 

ecu is fine

Re: Bad ecu?
 

get rid of the IAT cell it can cause a solid cel,

Re: Bad ecu?
 

But it still doesnt change the fact it wont fire on 3 cyl. Any other ideas?

Re: Bad ecu?
 

Did you try changing out the distributor? It may be a bad dizzy.

Re: Bad ecu?
 

Yeah i got one from 88dx and it started and ran.. then the next day it ---- out.