any suggestions?

my car stutters -- some drives OFTEN -- like this morning...
the RPMs will vary wildly, but, it didn't shut off (this morning).

OK, so, I've already taken the normal steps:
1) Clean Throttle Body
2) Replaced fuel filter
3) Replaced PCV
4) Replaced Engine Coolant Temp. Sensor

So, I'd like to check out my vacuum hoses...any suggestions?

Thanks!
FLO_BOY

 

Your TPS (throttle position sensor) is most likely toast. I had a similiar thing. Mine would rev way high like it had gone nuts.

Better auto stores sell a little vacuum thingy with a gauge that lets you pull a vacuum on the line and watch the bleed-down rate.

Are you getting the CEL?

-RMB

 

I'm not getting the CEL...
How do I test the TPS?

Thanks man, I appreciate the help!

FLO_BOY

 

Use this site to test the TPS:

http://www.vbxmaxima.8m.com/tps.html

Replacement is more like $250, not $70 like the article says. But shop around.

-RMB

 

The idle air control valve may be carboned up. I cleaned my throttle body and then had idle problems. . When I cleaned my IAC valve it was like night and day difference on the idle.
Do a search for a recent thread about "high idle". It has instructions.