acceleration flat spot

[BlazerLT]

Sounds like your timing is out.

Disconnect the beige and brown timing wire from the PCM and time your truck with a timing gun to base zero timing and then reconnect the wire, clear the computer and you should be good to go.

[gjones7777]

Originally Posted by BlazerLT

Sounds like your timing is out.

Disconnect the beige and brown timing wire from the PCM and time your truck with a timing gun to base zero timing and then reconnect the wire, clear the computer and you should be good to go.

I really appreciate your help and I'm sorry to be so ignorant but what is a "PCM"? I'm familiar with the ECM but not the PCM.

ALSO have you used the DIGIMOTO and if so what's you opinion?

http://www.digimoto.com/faq.htm

thanks

[BlazerLT]

PCM is the computer which is mounted under your glove box in the passenger compartment.

No, I have not used the digimoto, but I have done research on it. Seems an ok product.

[Bob Shaw]

At what RPM is your flat spot. If around 1800 rpm it could be the EGR system. I had this problem and had to unbolt the TBI and clean out the crud in the passage ways.
Bob Shaw