91 Z28, New everything, NO SPARK! - Third Generation F-Body Message Boards

91stroker · 07-03-2006, 12:23 AM

I just did an L98 Stroker, with TPI, and i have repalced the distributor, the cap, rotor, wires, plugs, and msd coil...still no spark. The service engine soon light is on aswell, everthing worked great before the rebuild. Any help would be amazing. You can also reach me at dahliametal@hotmail.com-Thanks Alex

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Vader · 07-03-2006, 02:55 PM

Welcome Aboard!

Is there 12VDC at the coil with the ignition ON?

Is the distributor turning?

Quote:

Any help would be amazing.

It's not really amazing. That's what we DO here.

91stroker · 07-04-2006, 02:07 PM

yeah, i checked the coil with the ignition on, and th distributor is definitely turning..i am checking the wiring harness for a possible bad wire..??

Alex IROC Z-28 · 07-05-2006, 08:45 PM

well I had this problem a long time ago with my IROC....was that small controler in the bottow of the the distribuitor.....the one that have the conectors on it..... I replaced and everything back to normal....

this part control de spark so if stop to work no spark at all....

JB22 · 07-05-2006, 09:56 PM

We had a similar issue this past weekend when starting my new 350.

We ran into an issue where we were 180deg off, so we had to turn the dist.

We had spark prior to this, but after we turned the dist. we didnt have spark... so we were like WTF...

Turns out we got a little bit of oil on the center of the rotor, so it wasnt getting a good connection.

Make sure all of the connectors on the cap and rotor are clean and give it another go.

91stroker · 07-05-2006, 10:52 PM

well, i certainly tried that...still no luck though! i think it's the damned ecm...no one thinks that is possible, but i have tried everything else! thank you though, i will try that once more.-Alex

JB22 · 07-05-2006, 11:08 PM

you sure you got a good ground?

I dunno if I think its the ECM... you have an old dist. cap and rotor to give a shot? Coil possibly too.

just2quickz28 · 07-06-2006, 08:48 AM

I am not sure if its the same on a 91, but in my 86 there was a fuse near the battery that applied 12v to the ECM that was keeping my car from starting

1991L98G92 · 07-06-2006, 12:55 PM

Try disconnecting the timing connector. Part of the "NO START" flow chart. It may also be a distributor ground problem. You also need to check the coil negative terminal to see if you are getting the pulse signal. And check to see if you are getting B+ at the coil when cranking. I think the starter feeds the crank voltage.

freestylzz · 07-06-2006, 01:32 PM

Distributor (ignition) module ?

(GM part# 10482827).

Alex IROC Z-28 · 07-06-2006, 11:24 PM

I was talking yesterday with a buddy of mine...and he said he had the same problem....test if you have power before the coil....if you do the problem is really the spark module or the reele....or the wire that goes to it....
If the module (ecm) was bad you will not have the de flash....ups...have you tried to take the take the codes from the ecm? 12...3 times?

Ahhh another thing if you car is older (with the maf sensor) they have a reele at the driver side close to the master cilinder that can cut the spark too....

91stroker · 07-11-2006, 04:54 PM

The plug from the ignition coil was mixed up with a coolant temp sensor under the plenum. I can't believe what i had done! But, the motor had to come back out, the rear thrust bearing was leaving metal in my oil pan and filter, but after 150 miles, that stroker is pretty damn fast! I highly recommend it to you thinking of a 383 conversion! Thanks for the help everyone. Sincerely, Alex

JB22 · 07-11-2006, 06:58 PM

That'll do it...

Not sure how you mixed up the coil plugs as I thought they could only go there, but glad to hear you got it sorted out.

cammed91 · 04-07-2007, 06:51 PM

yea the coolant temp sensor and the distributor plugs are the same. i think ive done that too at one time or another

BigBadLou · 04-08-2007, 12:38 AM

Btw, just so that there is no confusion, the Coolant Temp Sensor is on the front of the engine. What Alex probably meant was the Intake Air Temp sensor (aka Manifold Air Temp).

Lou

svroom · 10-05-2007, 08:49 AM

I am having the same trouble "no Spark" on a 88 305 TPI. which we did an engine replacement on. I have replaced the dist and there is power to the coil. the coil check fine in my other car. the connector to the coil has a two part connection which is hard to mess up, but half goes to the air temp sensor under the plenum. Are you saying this air temp sensor does not get connected to the coil along with the dist connection? Where does it connect? That was the only connection I could find that looked right.

jim91gta · 07-01-2008, 04:19 PM

Quote:

Originally Posted by 91stroker

The plug from the ignition coil was mixed up with a coolant temp sensor under the plenum. I can't believe what i had done! But, the motor had to come back out, the rear thrust bearing was leaving metal in my oil pan and filter, but after 150 miles, that stroker is pretty damn fast! I highly recommend it to you thinking of a 383 conversion! Thanks for the help everyone. Sincerely, Alex

Thank You!

I mixed up the intake temp sensor with distributor. Thast caused my no start spark issue after intake gasket replacement.