Need help

[Jnegrea93]

What is symtoms of a bad fuel regulator? Sometime when I start my car it acts as if it's going to stall but catches it self and when I'm idling the rpms lower then raise no lower then half a grand and no higher the 1 grand. Sometimes it's hard to start until I press the gas.idont want to keep adding money and not fix the problem

[Archon]

Often a bad fuel pressure regulator will cause hard starting. Pull the vacuum hose and check for a fuel odor in the hose. That would indicate a leaking diaphragm. It sounds as if your throttle body and idle air control valve could use a good cleaning.

[Jnegrea93]

Where exactly is the vacum hose for the fpr located?

[Archon]

It's attached to the side of the FPR.

[The extension gif has been deactivated and can no longer be displayed.]

You could also check the fuel pressure, with the engine running. When you remove the vacuum line, the pressure should go up.

[Jnegrea93]

Is that the back or front of the motor? Sorry for so many questions

[MrPOPE]

its in the front right on top up front....really hard to miss it

[Jnegrea93]

thanks for the help

[Jnegrea93]

The throttle body and stuff is all cleaned as it still does it. I had the starter, alternator and battery tested and they all came back good

[mrrcom]

mine was doing the exact same thing. i thought was the crankshaft position sensor but that wasn;t the case. after i cleaned the idle air control it fixed the issue.

but ive read on here that the CPS gives simaler symptoms. its a semi cheap part but it involves pulling off the harmonic balancer

[Jnegrea93]

I just replaced the crankshaft position sensor

[Archon]

Did you also clean the IAC really well? Try removing it again, and pushing the pintle in some. Reinstall it, turn the ignition on and off, and then start. Did that help any? Have you tried it with the MAF disconnected?

[Jnegrea93]

I took the iac off today and cleaned it and my problem is fixed. Thanks for the help

[Archon]

Great! Glad that it's fixed. Thanks for reporting back.