Engine loads up

[nooil]

I have a 93 ford f-150 with a 5.8 engine that loads up after it's warm. What happens is that after it's run, shut off, and then started again, it loads up and runs rough until I hit gas and clear it out. Have new O2 sensor and new MAP sensor. Anybody out there have any ideas?

 

[Chris142]

Fuel pressure regulator or a leaky injector.

 

[nooil]

Thanks for the reply, Chris. I didn't think about those possibilities. I will have them checked.

 

[Mr Nice]

Have you checked for any codes ?

 

[Kestas]

http://fordfuelinjection.com/

This is a good web site for EEC-IV Ford trucks. I just spent part of my vacation learning how to read all the codes (KOEO, Memory, KOER, and the cylinder balance test) for my 91 Ford 302. I even made myself a switch to remotely connect the Self-test-out to the Self-test-in so I can read the blinking check engine light. Once you're up to speed on reading these codes, it's a wondeful feeling knowing you can access the important error codes for next to nothing.

You can have error codes without having the check engine light come on.

 

[Jim 5]

Kestas,

I'm familiar with that site, and I suspect you might get a few PM's from me in the next year or so. My next project is putting a '91 EEC IV mass air EFI system (from a '91 or 92 mustang gt) on the 302 in my vintage bronco. I've got all the parts, just building up the energy/courage to jump in.

Lots of early bronco guys have done it due to carburetors not working well at steep angles while off-roading. Seems like it would be a fun project.