Our 1998 Suburban is going WOT. It has done it on more than one PMD. We have also developed, an as yet unlooked at, massive fuel leak.

What are the odds of it being the IP? I have a chance to buy a reasonably priced - supposedly has 800 miles on it - new Standyne - for $350 shipped or maybe a little less.

I wanted to know more by this time in the day, but things did not go as planned. Trying to weigh the odds and make a snap decision to buy that IP or not.

Thanks

 

Any codes from the sub?
runaway not caused by PMD is likley IP but have you done the 2000 rpm test?