Idle problems & slight surging

[Saleen308]

My car has been put up for most of the winter. I decided to get her out and start driving her again. I had a dead battery and my alarm decided to go out. I got both of those things resolved.

When the car is cold the idle is fine but, when it is warmed up it trys to idle any where around 1400rpms to 2100 rpms. Even after reving it a couple of times it still does it. Sometimes going down the highway it acts like it is trying to surge. It does it more at lower rpms than it does at higher rpms.

I added a bottle of fuel injector cleaner but, I haven't ran that tank out yet. I am thinking about adding a bottle of HEET just in case the surging is related to water being in the gas tank.

Any guesses?



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347 stroker, TFS track heat heads ported and polished, ported GT-40 intake,70mm TB ans spacer,75mm MAF,K&N,24lb injectors,1 5/8" mac long tubes, off road h-pipe, FMS "z" cam, FMS plug wires, NGK plugs, FMS aluminum drive shaft, Omega 1.6 RR, FMS 3 core radiator, Flowkooler waterpump, World class T5, Pro 5.0 shifter, Autometer Fuel psi gauge, Autometer A/F gauge, caster camber plates, Koni reds, Pan hard bar, S.S. brake lines, Centerforce Dual Friction clutch, Walbro 255lph FP, Lakewood drivesha