94 Cobra no start

Nov 02, 2004 8 Replies

It started gradually, every so often, it would crank but not fire. I would run the battery down, as soon as I jump started it, it would fire right up. Now it will not start at all. I got a new battery after killing the last one. It does not seem to be getting good spark. I have a spark tester, and it shows only one spark when cranking, usually right when I start to crank it. I took the module out, had an auto parts store test it on their machine, it tests good. I checked the coil, it ohms out good, but installed a new coil just in case, no change, still no start. I highly suspect the PIP. Any relevant experience? Thanks!!


-mike


Check your ignition module it may be bad and they are notorious for this. cap and rotor.

The TFI is located under the air cleaner on the fenderwell.

Thanks, but as I said, I already tested the module, and it is good. Also, new cap and rotor (it was pretty bad...).

-mike

Richard wrote:

You get ONE spark then nothing?

Watch your tach,, a little bounce when you sw ign on, right?

So while you're cranking, either no bounce or just a wiggle, then nothing?

Then It's either the tfi or the pickup in the dist.

what happens when you disconnect the spout?

Would all you guys with dist engines read that about the tach, then look for it on startup so you'll remember it!!!!!

I would disconnect the SPOUT connector, crank the engine and verify an on going no spark condition. That should point you toward the Hall effect p/u or ignition control module. In your case, I'd suspect the Hall sensor inside the distributor where the PIP signal originates. The ECM may be storing codes such as 211/212 which could also indicate the Hall effect p/u at fault. In most cases, the distributor assy is more likely replaced vs press fitting in another sensor...

-- Mike

93 Cobra

That's on pre-94's, the 94 and 95 do not have the tfi on the rotor anymore.

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Besides the hall effect sensor, I would also check fuel pressure.

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Ummm, the gear heads would never say it, but...how about taking it to the dealer. It is under warranty, is it not?

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