Hey everyone. I'm hoping you can give me some advice on an issue I've been having.

My 1994 f250 5.8L auto has been randomly shutting off while idling at a red light and turning corners (also reversing) only seems to happen after a bit of highway driving to and from work

The engine itself dies while all accessories stay on. Seems to be avoidable by keeping the rpms up but still stutters a bit.

Tried replacing the idle control valve which fixed it for a day. Cleaned the intake. Seafoamed the entire truck. No codes tripped. Recently replaced map sensor. Plugged egr.

Turns back over every time with ease. Battery tested same with alternator. What else should I be looking at?

Thanks.

 

You said you checked codes but was that the check engine light not on or did you check for codes. Stored codes might point you in the proper direction.

 

checked any codes available. No codes stored. Check engine light isn't on at all. Seems to happen when there's a lot of load on the battery but alternator reads fine

 

Have you checked for air leaks near the intake manifold or damaged hoses?

An air leak may or may not create a MIL.

 

Yes checked all the hoses but I'll check them again. I'm going to replace spark plugs and wires and see if that helps. Could be a iratic misfire.

 

are you getting no code at all, or the pass code "111" ?
if you are getting code "111" then my next move would be to check fuel pressure.