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Blue Rebel

01-13-2012 10:19 AM

What would cause surging idle?

Hey question is in regards to my 95 F150. Its got a 351W being run by a 302 MAF computer

If i take the cid differences out of the equation, what would cause a surging idle when cold on a MAF controlled engine? After i drive it for a few min, idle will smooth right out. Already has a new IAC. Thanks for any help!

critterf1

01-14-2012 12:05 PM

Is the throttle body dirty?

Blue Rebel

01-14-2012 04:20 PM

I dont remember, ill try cleaning it

revans9295

01-14-2012 07:20 PM

i have a 1990 with a 351w . it was surging and i unplugged the TPS and it leveled out and idled smooth .

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