absolutely refuses to start

[trumdad]

I have a 1999 Ford Explorer Sport, 4.0 SOHC that died on me in traffic without warning. It will crank but not start. It's getting fuel and spark. On the advice of knowledgable people, I have replaced the ignition switch , fuel filter and cam sensor. All the fuses have been tested and are fine. The latest advice is the vehicle's computer but I don't want to incur so large an expense without certainty. I have bought OBD II scanner (and used it correctly) but it showed no trouble codes. I don't know how to interpret that. Any help offered would be greatly appreciated.

 

[Samb148]

Did you have any timing chain slap before it died?

 

[JusTheUsual]

If it wont start while it was hot, your engine overheated and wait for it to cool down

 

[jremington59]

It may be getting fuel but it may be not enough pressure. Did you check it with a fuel pressure tester? Sounds like a classic crapping of the fuel pump.

 

[trumdad]

Did you have any timing chain slap before it died?

I didn't hear anything at all before it died

 

[trumdad]

If it wont start while it was hot, your engine overheated and wait for it to cool down

The engine didn't overheat but it's been tried several times in the past two weeks

 

[trumdad]

It may be getting fuel but it may be not enough pressure. Did you check it with a fuel pressure tester? Sounds like a classic crapping of the fuel pump.

Although a tester wasn't used, the pressure was checked by pressing in on the valve and there was a pretty strong spray

 

[1992fordgreen]

If you were having issues with overheating before this happened, chances are your immediate shut down in traffic was due to whatever overheated.

 

[jremington59]

Although a tester wasn't used, the pressure was checked by pressing in on the valve and there was a pretty strong spray

That's irrelevant. Two pounds of pressure coming from that small hole will spray pretty good. Can you hear the pump priming when you first turn the key?

 

[Samb148]

Good call. I meant for my timing chain comment to be on another thread. You need to check you fuel pressure with a gauge. The overheating is a big red flag.

 

[2000StreetRod]

Ford Explorer Engine No Start Procedure

Ford Explorer Engine No Start Procedure