`98 GT-Insufficient Switching Control Valve

What is it & how do I fix this insufficient switching control valve. When I
get up to 50-60mph it starts jerking real bad. I can't ease off the gas I
have to let off completely. It also surges when idling, but doesn't do it
all the time. I have changed the plugs, MAF sensor, ERG valve & all 4 O2
sensors. What else could be causing this?

"tammysmustang" > wrote:

> What is it & how do I fix this insufficient switching control valve.
> When I get up to 50-60mph it starts jerking real bad. I can't ease off
> the gas I have to let off completely. It also surges when idling, but
> doesn't do it all the time. I have changed the plugs, MAF sensor, ERG
> valve & all 4 O2 sensors. What else could be causing this?
>
>

Welcome to 'newbie world' You most likely just wasted a LOT of money!

Why on earth did you change the O2 sensors? Because some parts counter
guy said to?

ISC means Idle Speed Control.

That is probably the culprit, though we cant be sure. You may have more
than one problem
You changed {?} the MAF, when a cleaning would have most probably
sufficed.

Suggest you rely on internet concensus (that means MORE THAN ONE) before
acquaintance suggestions.

Which might have also suggested you have the codes read out and posted
those codes (actual ones) on here or alt.autos.ford

You'll know better next time, right?

--
Yeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price
you pay..DEAL with it!