98 SOHC, Bogging When Warm

[ShortyzKustomz]

I havent been on here for a while. I also havent touched the Explorer for a while either. Trying to get this thing on the road for a daily. If you remember any of my other posts, I have a 98 EB 4.0 SOHC, Auto. That I got for free. It had been sitting 5+ years. I dropped the tank, put in a used fuel pump, cleaned the tank, Replaced a/c compressor and redid the whole a/c system. And now its running. The thing will run awesome for 10 mins. Yesterday I started it after sitting for a month. And drove a few miles. Once it warms up and you drive a little, It falls flat on its face. If you floor it it boggs down horrible. You can only give it about 1/4 throttle. Under 1/4 throttle it will rev clean through the rpms and eventually get to speed. Any more then that it just dies. Ive replaced the fuel filter a few times (Still getting a lil brown gas each time) Cleaned the MAF and threw a cone filter on it. What would you suggest next?

 

[swshawaii]

It had been sitting 5+ years.

Trouble codes? My guess is intake gaskets or loose studs. GL

http://www.explorerforum.com/forums/showpost.php?p=2364255&postcount=1

 

[ShortyzKustomz]

No codes at all, I will look into intake leaks

Would it run great for a few mins?

Original Reason for being taken off the road was shop told him it was locked up...
It was the a/c compressor locked

 

[DoraThe_Explorer]

Have you changed the fuel filter? My guess is gas sitting in there for five years would cause a minor clog... Also what about plugs, wires, and a full tune up?

 

[swshawaii]

Ive replaced the fuel filter a few times (Still getting a lil brown gas each time)

Good point on checking the plugs and wires, at the very least pull the plugs and inspect them.

Intake gasket leaks are usually a problem when the engine is cold, when hot they expand and seal.
The earlier 4.0L SOHC's are notorious for leaking upper and lower gaskets, check them regardless.

 

[boominXplorer]

My guess is intake manifold o-rings. If they are original I bet they are like cardboard by now. For a truck to be sitting such a long time it will need some maintenance to get back to par.

 

[DoraThe_Explorer]

Oh also add air filter to that mix to check... When I got my last explorer the owner before me left it for a while and some birds built a nest in the intake box (under the air filter) . Probably not the case from the sounds of your problem... but still something quick to check.

 

[ShortyzKustomz]

Oh also add air filter to that mix to check... When I got my last explorer the owner before me left it for a while and some birds built a nest in the intake box (under the air filter) . Probably not the case from the sounds of your problem... but still something quick to check.

when I cleaned the mass air flow and found the rat's nest inside the air box I pulled it out and stuck a cone filter on it. I got some plugs and wires to throw it just haven't had time to do those yet. all fluids have been flushed and changed. I am going to keep on changing fuel filters to trying to get the last of the sediment that is getting sucked up. even though I cleaned the hell out of the tank when I did the pump

 

[2000StreetRod]

replace the fuel tank

If the vehicle set for 5+ years you should consider replacing the fuel tank. See this post by ranger7ltr: This is from my POV...