whats up with my idle

[Drift_SM]

OK well i just started up my car it idles around 700-1000 rpm's...IS thats normal or bad...it sounds like its stuttering a little... what could it be?

it also seems to get worse if i rev it a little?

i toke it down the road and back but it still did the same thing...

my bov is recirculated so thats not it.... any ideas would help.

later guys

 

[Staytuned]

Dirty ISC, or shot ISC. That's the motor that controls your idle on the bottom of your throttle body. Or a possible vacuum leak would do that.

 

[JessesTalon]

I dont think the ISC is bad unless its surging up and down.

Most likely its probably a boost leak, maybe do a leakdown test and report back?

 

[Staytuned]

Not a leakdown test...thats involves pressurizing the cylinders and calculating the % of pressure loss. You mean a boost leak test.

 

[Drift_SM]

do you think if i tighten my BOV screw thing a lil bit harder it will idle better?

maybe its to loose causeing boost to leak

yes no?

 

[Drift_SM]

do you think if i tighten my BOV screw thing a lil bit harder it will idle better?

maybe its to loose causeing boost to leak

yes no?

 

[Drift_SM]

also what kind of coolent should i buy...im low.

 

[Staytuned]

Buy 50/50 mix from any auto store. Ask if it is silicate free or low in silicates. Prestone is notorious for using this sand like substance in their coolant......the theory is it helps clean to keep your coolant system cleaner. This is not needed if you flush regularly.

No tightening your BOV should not help this symptom if you are not venting to atmosphere.

 

[ddavisaf]

http://www.vfaq.com/mods/ICtester.html
Boost leak test for sure.

If your ISC was bad it would also be trying to die on you.
You can take it out and give it a cleaning though. They get "gunked" up on occassion causing different idling situations.

Post back with your results after the boost leak test.