97 XLT 5.4 Starts, revs high, then dies

[RHSC]

Hello everyone,
I have a 97 XLT with the 5.4L with 183,000 miles. I installed all new coils (Accel) and plugs about 30-35K miles ago. Yesterday I drove the truck all over, about 100 miles, and everything was fine. Today I tried to start it and it started, revved high, some where around 4K RPMs then dropped to about 100 -200 RPMs and then died. It tried to start it a number of times with the same result. Looking for some suggestions on where to start. Fuel Pump (original I think)? Idle Air control valve? Any help would be greatly appreciated. Thanks.

 

[toms89]

Check pcm for trouble codes and report back with alpha numeric code.

It would be much easier to go from there....

 

[rex450se]

IAC. I can almost guarantee it. It's about $50 and not even 10 minutes. I've had 2 vehicles where the Idle Air Control valve has failed, and when it happened on my wife's 98 Expy it did exactly as you described.

Victor

 

[RHSC]

No trouble codes at all. No check engine light.
Thanks rex450se, I will try that first thing tomorrow.

 

[rex450se]

Have you fixed your problem?

Victor