87 Suburban stalls when......

[burbanguy]

Hi guys, I've been fighting with this issue for a while now on my free time and FINALLY got to the bottom of it!

Here's what was happening........ At first, the truck was hard to start, and when it did, it would lose power when I gave it gas as I was driving it but rarely would shut all the way off. So I replaced the fuel pump and both fuel filters( The one right in the tank and the one outside the tank) and that problem was solved

Next, the truck would drive perfectly when it was cold and became easier to start but as soon as it warmed up to operating temps, while I was driving, I would have to give it 3/4 throttle so it wouldn't stall because if I just tried to cruise or turn the steering wheel all the way while I was backing up slowly, it would stall. So to fix this problem I checked and replaced the egr valve eventhough it still was able to move (it wasn't clogged) and BAM...... Everything was fixed

Hope this helps anyone in this situation and saves them lots of time and headaches.......

[GaryL]

Great Job!! Thanks for the update and information.