I might be having opti problems again..

Reply Subscribe

Thread Tools

Search this Thread

Feb 25, 2012 | 04:03 PM

yellowlt1ta

Thread Starter

Teching In

Joined: Sep 2008

Posts: 25

Likes: 0

I might be having opti problems again..

I have a 93 trans am that I love so much that I turned it into a little street monster lol. 80mm turbo ms2 aeromotive fuel system the works. I turnd it on and ran fine untill it turned off and never wanted to start again. I checked fuel and it was good I check spark and no spark...

I have a msd distributor with msd coil and msd 6al with a 2 step and msd plug wires. this set up has been on the car for a few years. and its been run off the stock ecu, megasquirt is fuel only.

I check spark from coil and no spark so I got a brand new msd 6al because i thought it was part of the problem. I install it and I got spark at the coil now. so I try to turn it on and nothing...

I check to see if im getting spark to the plug and it pulses but with a big pause in between sparks. like: spark....crank crank....spark

so I check the ecu and it checked out fine, I check for codes and it only gives me 12 and 12 means its working.

so I think that the rotor might have bursted inside or somthing like that because this is strange to me. oh and btw motor only has like 3 miles on it... that includes cap and rotor.

any thought on what could be happening?

I just now replaced the distributor and still nothing...

Feb 27, 2012 | 08:33 AM

blk3rdgen91

On The Tree

Joined: Jun 2008

Posts: 164

Likes: 0

From: Hallandale Beach, FL

check your ICM??

Feb 27, 2012 | 09:21 PM

yellowlt1ta

Thread Starter

Teching In

Joined: Sep 2008

Posts: 25

Likes: 0

Quote:

Originally Posted by blk3rdgen91

check your ICM??

I have no way of checking it. and iv called all sorts of auto parts and they say that they cant check it so today I orderd a new one and it should be here tomorrow. Im crossing my fingers.

Feb 28, 2012 | 09:36 AM

blk3rdgen91

On The Tree

Joined: Jun 2008

Posts: 164

Likes: 0

From: Hallandale Beach, FL

Quote:

Originally Posted by yellowlt1ta

I have no way of checking it. and iv called all sorts of auto parts and they say that they cant check it so today I orderd a new one and it should be here tomorrow. Im crossing my fingers.

here is how you check ICM and find out if the opti is no good

http://shbox.com/1/4th_gen_tech2.html#opti_test

Feb 29, 2012 | 08:01 PM

96TransAmboosted

TECH Fanatic

iTrader: (8)

Joined: Jan 2011

Posts: 1,550

Likes: 0

From: Pinellas Park Florida

Spark, Fuel, Compression. That's what you need for it to run. Check each of those.

Mar 4, 2012 | 12:28 AM

yellowlt1ta

Thread Starter

Teching In

Joined: Sep 2008

Posts: 25

Likes: 0

It had fuel, compression, and some spark but not consistent enoph to start up the car. I did the icm check but that doesnt really check the icm so I just replaced it and then I got good spark. but still not starting. so I refreshed my firmware on my ms2 and started right up!

so now I cant finaly put it all back together and start some tuning. hopefully no more problems.