Bad idle serge... Need help

[Va94cobra]

I have a 1994 cobra wit long tube headers msd ignition and k&n air filter... Just did a head gasket job and had heads done. Got the car back up and running took it for a drive and it serges while siting still... When u turn the wheel it will die.. When u are driving and about to go into a turn push in the clutch and turn the wheel it dies... I pulled the iac/maf and cleaned them put back on and still serge's.. It has new plugs new cap and rotor im lost please help...

 

[rz5.0]

Check for vac leaks, double check for vac leaks, rest your base idle..

 

[Va94cobra]

If no leaks and i reset base idle could my tps be bad?

 

[rz5.0]

You can check that with a volt meter..

 

[CC'S95GT]

when my TPS went bad I would get a hanging idle not a surging idle.
I agree with a vacuum leak diagnosis.

 

[99GreenStang]

power steering . if it happens when you turn .

 

[Va94cobra]

But it will die on u if the power steering goes out? I dont see how that will cause my car to die.

 

[CC'S95GT]

But it will die on u if the power steering goes out? I dont see how that will cause my car to die.

If the pmp is going out then that's just more strain on the engine

 

[Va94cobra]

That shouldnt make it surge when ur not moving the steering wheel.

 

[FrankenStang]

id check ur alternators voltage regulator...it can cause a lot of those same issues....do the rpms drop every so slightly as you turn ur wheel and the more you turn it the more they drop? like at an idle if you crank ur wheel all they way one direction what does ur car do?

 

[Va94cobra]

The alternator is good i had the car running and pulled the ground off and it ran for 20-30 min before i put back on... If u turn the wheel slightly it doesnt do anything its when its in full lock it dies

 

[FrankenStang]

just because ur alternator is good doesn't mean the voltage regulator is...

 

[Va94cobra]

Well my lights stayed on the whole entire time nice and bright when the battery was disconnected while car was on...

 

[rz5.0]

That if the worse way to check A alternator.. Make sure your intake does not have any vac leaks that includes in between lower and upper..