94 5.7L stalling

[Hood93z]

You have a vacuum leak. Grab a can of carb clean and spray the base of the TB and the intake where it bolts to the heads. My bet is a big vacuum leak at the intake.

Can't get it to idle at all now though

 

[Scrufdog]

At any point have you checked to make sure you dont have a leaking fuel injector?

 

[magimerlin]

Can't get it to idle at all now though

Can you idle it up to keep it running??? If so do that and still test for vac leaks as mentioned above..

Unplug the iac and try to start it. See if it idles then.

Have physically tested any parts or have you just been throwing parts at it and hope one fixes it... All the sensors can be tested pretty easily whether the motor is running or not..

sent from what use to be a great country..

 

[magimerlin]

If you where closer I'd bring over my snap on mt2500.... find out what all the sensors are doing and any stored codes... anyone nearby the op that has a live data or snap on mt2500 they can hook up to the truck. I just hate when people just throw parts at a problem hoping something will fix it... it needs to be properly diagnosed.

sent from what use to be a great country..

 

[Hood93z]

I've pulled the codes the sensors have fixed most but the only codes I have now are map sensor low vacuum and rich exhaust

 

[Hood93z]

At any point have you checked to make sure you dont have a leaking fuel injector?

I've turned the key all the way on and watched the injectors real close no fuel dripped

 

[Hood93z]

Well I unplugged the IAC still wouldn't crank

 

[skylark]

Well I unplugged the IAC still wouldn't crank

As in the engine doesn't turn over? Or the engine spins but won't start?

 

[Hood93z]

As in the engine doesn't turn over? Or the engine spins but won't start?

It spins over and will start for a second rev a little high then die

 

[slippy3002]

I bet the iac pintle is grounded in the TB and possible fumes up. That is probably why it's running rich.

Sent from Robl@nd