On the fuel pump there is a fuel pressure regulator (rockauto says fuel pressure dampener). THat might be faulty so it isn't letting the fuel pass until the pump goes harder.

It really shouldn't make a difference. My friend had a 5.0 mustang and he was running 70PSI for his setup. It worked fine, but everyone was like WTF.

After the seafoam treatment my check engine light has not come on...until i floored it to 4200RPM. However, there is no stumbling. I think the cat is the culprit. The guy i bought it from may have cracked off all the ceramic and left the metal honeycomb. Now it must be a ball of molten metal.

My truck just had stumbling on idle, then smoothed out as i drove it. THen i changed spark plugs and it got worse. i changed them back and it smoothed out again. now there is no stumbling and an engine light. So it must be the cat.

When i seafoamed i heard a PING coming from the CAT. Maybe there was something stuck to a valve and it went out the exhaust. But the cat/02 sensors must be messed up. All the soot the engine sucked in from the fire could not have helped those sensors. I am gonna get Autozone to ODBII test it again this week. Guarantee it is the O2 sensors. Until then i am riding my motorcycle. But the truck runs great.

I woult get some seafoam.

One thing about seafoam in a 1996. Should i have used half a can on the brake booster side, then the rest on the PCV side? I am thinking of the divider not letting all that seafoam goodness going to the other side. I already used the whole can on one side.

For 8 bucks, the seafoam couldn't hurt. It can clean out the cat some too.

I am just glad i narrowed it down to one thing basically. It would have sucked if there was a shot in my wiring.

--Dan