Emissions Question
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Emissions Question
Hello, I have a 1990 F250HD 4x4 w/351W(FI) and the ZF 5sp.
This vehicle is now a off-road vehicle only, no on-highway usage at all. My question is it still has all the emissions stuff on the engine, can someone please explain to me what I can take off and what has to stay, I know a lot about these engines but need help on this. Like unscrewing the hot air tubes that go into the exhaust manifolds and plugging the with pipe plugs or what.
and can I do this and still keep my check engine light off or will it always be on.
I saw a truck just like mine at the local garage getting a new EGR that was a electrical company truck that had all this taken off and the engine bay looks real clean, besides there are emissions sensors on my truck that are bad and I would rather do this to clean up the bay.
It is a strictly off road truck now,
and besides I am in Arkansas and there are no check anyway.
thanks,
Joel Thomas
1990 F250HD 4x4, 351w, ZF,
305/75/16BajaClaws.Ferndale,AR
This vehicle is now a off-road vehicle only, no on-highway usage at all. My question is it still has all the emissions stuff on the engine, can someone please explain to me what I can take off and what has to stay, I know a lot about these engines but need help on this. Like unscrewing the hot air tubes that go into the exhaust manifolds and plugging the with pipe plugs or what.
and can I do this and still keep my check engine light off or will it always be on.
I saw a truck just like mine at the local garage getting a new EGR that was a electrical company truck that had all this taken off and the engine bay looks real clean, besides there are emissions sensors on my truck that are bad and I would rather do this to clean up the bay.
It is a strictly off road truck now,
and besides I am in Arkansas and there are no check anyway.
thanks,
Joel Thomas
1990 F250HD 4x4, 351w, ZF,
305/75/16BajaClaws.Ferndale,AR
Junior User
Joined: May 2001
Posts: 83
Likes: 0
Emissions Question
You can take off the air pump and all the hoses that connect to that. I would leave the EGR valve on, because the engine is tuned to run with it, and if you take it off it will probably ping real bad. The catylitic converters can come off. you can take the carbon canister out, this wont do alot for performance, but it will probably clean up the engine bay.
