I have a 94' Formula 6 speed and it has the delteq on it. Recently I changed the thermostat and when I went to start it, nothing.. Checked for spark and no spark. The delteq seems to get getting signal from the optispark. Tried a different pcm and nothing and mine worked in a friends car. No fuses are blown. Anyone have some suggestions?

 

Did you bump a wiring or something? How's your fuel pressure? Are you getting turnover, at least? I'm guessing you do from the fact you have spark. Spark is good, but it doesn't even get you halfway. You need air and gas, too. If you have turnover, and you know FOR SURE that you have spark, might be time to check the fuel pump, etc etc. Just a thermo change? Wow... You sure it was the thermostat? Ha, just kidding man.

 

Does the Delteq have any built in diagnostics, LED's, etc?

 

it cranks fine, just no spark, delteq was a diagnostic led and looks fine. Took the delteq off and still nothing. Gonna try an opti and see if it works.

 

Ha, Injuneer always finds my absent-minded posts where it's evident that I didn't pay enough attention. So you have crank, just no spark. And the Delteq and Opti don't appear to be working. Yeah let us know if the opti works, because if it doesn't, you are going to need to look a little further "up" the ladder than a distribution system.

 

ok, fixed it, it was the opti. But now under WOT above 4k it breaks up. Its a napa opti. My buddy said napa opti's are junk and only go GM. Whats some opinions?

 

If you've read any posts on this forum at all, you would know that virtually NO ONE recommends anything other than a factory GM part (or once in a while the MSD Billet unit - but that's another can of worms). The auto shop rebuilds are probably among the worst, second only to the cheap Chinese ripoffs being sold on ebay for less than $100.

 

Yes, go GM or MSD (which are pretty much on the same level now). I like NAPA, but I don't trust their parts worth a penny. Also, it is not heat related, correct?

EDIT: Dangit Fred.... Beat me to it.

 

nope, not heat related. And this is my buddies car, I myself have a gm opti with a crap load of miles on my race motor and no problems. He replaced his t-stat and after that it would not run. Changed the opti after chasing loose ends and now that was fixed. But under WOT 4k and above it just started to break up.

 

Yeah, I would definitely get a GM Opti instead man. Have you checked for any codes, too? Here's what I am wagering happened, although I don't think it completely fits together:

1. He replaced his t-stat, got water on the opti and ruined it.
2. Replaced the opti with a new one, but a crappy one. Now it runs, but the opti isn't worth "INSERT STATEMENT HERE" and is giving him problems at WOT.

Fix? Get a GM or MSD Opti. For simplicity, just go with GM in my opinion. They're pretty much the best. Just my $.02.

 

I agree.. He has delteq also, but still uses the optical wheel and sensor I believe.

 

Gotcha, that's right.... Yeah, even with the delteq, that cheap crap's optical sensor is probably mucking things up. If it's using anything related to the Opti, get a better opti. If not, then we need to look at possible other problems. For instance, what's his fuel pressure doing at those high RPMs, etc? Maybe his engine isn't getting the fuel it needs, in which case you might be looking at a new fuel pump or other problem with the fuel system. Let us know!

 

I wouldn't rule out the Delteq itself.

 

Good point. Even with diagnostic lights, you never know what's going on in there. Is there another way to test the Delteq?

 

The Delteq was never a "star" performer in my opinion. I had previous bad experience with the designer and his Opti-Eliminator (when he worked at Electromotive).