when at idle the engine shakes every 5 seconds or so not terrible jus a little shake but runs fine beside but i bet it could run better

ive replaced fuel pump, fuel filter, new platnium plugs, air filter im stumped any one have an idea?

 

could be opiti spark or befor you change that check your FPR Mine was out and my car would idol funny and sound like a knock in the top of the engine.

 

what's the FPR? IS that Fuel pressure regulator?>

 

Check the IAC, are you getting any check engine codes?

 

yes

 

I A C ?? help me out

 

oh ya it might be good idea to check all your vacuum lines to.

 

IAC-Idle Air Control

 

good **** thanks

 

Check your throttle body is not clogged. Btw Your IAC should be located on your throtte body