Well, I never thought I'd have a prob finding the cause of a no start condition. I have spark and fuel psi. NOw, what sends a signal for injector pulse? I'm fairly certain the little basturds are operating. My father drove the car this mornig, started fine, and he parked it out front, whenI get in it to go to work, it fires off, but doesn't sart...grrrrr. Anyhow, anyone know what sensor input controls injector pulse when there isn't a crank or cam sensor in the mix? Thanx guys.

 

You could check the TPS. If the TPS is shot, and the computer thinks you're WOT, it'll shut off the injector pulse to go into "clear flood" mode.

 

It is brand new, but I suppose anything could happen. I tried a diff EECM PROM, did same thng, it fires once then dies. I checked the spark, it's kinda weak IMO. but it is awfully bright outside, so I'll check again towards the evening. Friggin car's just begging to be carbed.... Oh, and the injectors ARE getting fuel into the chambers, the plugs are wet after a crank cycle, but not while just triggering the fuel pump..

 

Do you have a lose / sloopy steering wheel???

 

Yeah, why?

 

Well your tilt steering screws have fallen out. Which then makes the whole system lose. And then the key switch acts funny from it. Every time hat wheel slops around it yanking on the Key switch rod. My car would turn off if I turned right to far or in reverse.

It a big pain in the butt getting the column apart right, and ya need the special tilt pin puller. Then get the 4 screws back in. [as they worked out slow n were just lose at time so the threads get bunged.] I only got 3 screws back in. But use locktite, which GM didn't.

That constant slop messes with your key switch.

It could be why it runs sometimes n don't the other for no real reason. When you get in the car, maybe you jerk on the wheel to much, where your Dad doesn't. Or he jerks on it n you don't

 

Funny, because he bitched about it being too loose this mornign after he moved it. But that wouldn't explain this problem unfortunately (however, that sort of thinking I commend you for, and now I guess I'll fix the screws...). I can't see how that would cause this problem though.

 

hmmm my iroc steering is loose like that...and my car does the same thing yours does when i start it.....wonder if it would be the same for a V8

 

UPDATE:
It has been proven to be neither the Ignition switch assy. nor the TPS sensor. I even swapped on a spare MAF I ahd lying around for shiz and giggles. I don't understand waht's going on, I'm getting fuel to the chamber, and I'm getting spark....something isn't right..

 

There is a sloppy wheel how to fix on this site somewhere.

Its a common problem for all GM cars with tilt. GM was to cheap to use locktite so the screws just back them self out.


All you need is spark, air n fuel to get fire.

Sure the spark at the plug is good??
Plugs can foul and not work right. And no manner of good spark will help.

Dirt bikes do that. plug looks fine but change it and the bike fires.

 

It's firing okay, and if you hold the pedal down or keep the revs up, it runs, but it doesn't start like it should. You know, turn key, starts, without pushind pedal. It won't idle at all.

 

If you say hold the rpms at 2000-2500 for a few mins to warm it up, will it idle then???

 

UPDATE: Problem fixed....ALL of the problems....
Such a trivial thing was not only causing todays No-start condition, but als all of the idels probs I've been having over the last 7 months...
A slightly bent throttle stop blade The one that meets the idel control screw, was only slightly bent (how I dunno), but by bending it back 90* like it's supposed to be, and re-adjusting the TPS, car purrs like a kitten now (spooky feeling...). So, for all of those folks out there with idle gremlins, check that and see if it's the way it should be. I didn't discover this myself, a friend of my fathers' did... Good guy, I think I'll buy him a case of Bud

 

Do you think it would cause my Camaro to idle at 1000RPM? I have done just about every thing except replace the engine to try and fix it with no luck. It idles fine, just to high.

 

Hell after finding that to be the cause of mine, it wouldn't suprise me. My pop's friend says he thinks it's metal fatigue. And yes, Incorrect TPS reading or idle arm opening will cause a high idle.