Need help, tried everything can think of

[GRIGORI_Robb]

Hello, I have a 92 4x4 that i can not get to start. it will turn over but, that is it. I am able to get it to start for a couple of seconds by spraying ether, but then it dies. the fuel pump is fine, the relays are good. have checked the injectors, and they have proper resistance and are recieving impulse voltage. there is fuel pressure. this has me so baffeled and i am not sure what else to even check. any help or ideas would be greatly appreciated. thank you

 

[JDraper]

Welcome to the board!!!

Have you checked for a huge vacuum leak? The older explorers were notorious for having a lower intake manifold leak. That would cause what you're finding.

 

[marragtop]

Check the vacuum lines on the vacuum tree located on the drivers side valve cover near the firewall. If one of those lines is off, it can give you the problem you are having.

 

[gfennie77]

Have you double-checked for spark? Are your plugs 'wet' from fuel?

I had a problem a few years ago that totally threw me for a loop. I put a new throttle body on my 1993 X and the truck would not start.

I remembered accidently dropping a wrench down between the fan and radiator, and as it turns out, that wrench knocked the Crank Position Sensor (CPS) out on its way down. Without a CPS the EEC cannot read engine RPMs and it wont give any spark to the engine. Reconnecting the CPS solved my problem.

Try to imagine standing in the shop at 12:30 in the morning wondering how the F$#% you could cause a 'no start' condition by installing a lousy throttle body.

Moral(s) of the story: (1) Don't drop tools in the engine compartment. (2) When in doubt, double-check for Air, Spark, and Fuel.

Also, you might check your Idle Air Controller to make sure it's opening to allow air in around the throttle plate. But I also second the "check for vacuum leak" suggestion.

Cheers!
-Graham

 

[MrShorty]

Are your plugs 'wet' from fuel?

+1

Even though fuel is getting to the rail, the fuel injectors have to "fire" to get that fuel into the cylinders.