Idle issue (cannot narrow down the cause)

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Nov 15, 2018 | 11:04 AM

#11

waino

Joined: Jan 2012

Posts: 44

Likes: 3

From: Idaho

Yeah thanks for the clarification everyone!

Nov 15, 2018 | 11:42 AM

#12

rossco

Registered User

Joined: Dec 2008

Posts: 465

Likes: 6

From: oahu, hawaii

Most likely a bad pcv valve. pinch hose and fluctuation should go away.

Nov 17, 2018 | 10:38 PM

#13

oliversok

Thread Starter

Joined: Dec 2016

Posts: 99

Likes: 3

From: Las Vegas

So the idle symptoms haven't come back thankfully, but I am sure it will sooner than later. Thanks for all the help guys.

Nov 18, 2018 | 07:32 PM

#14

04s2000ATX

Registered User

Joined: Nov 2018

Posts: 5

Likes: 0

So what was the issue man? Pcv? I’m having the same issue with my s2k. As I come to a stop it stays at 1500-2k rpms.

Nov 19, 2018 | 08:38 AM

#15

engifineer

Moderator

Joined: May 2014

Posts: 7,913

Likes: 2,483

Quote:

Originally Posted by windhund116

I suppose LIT or UNLIT, depends on how much you like the car. Or how much pain it has given you.

Soapy water, sprayed from spray bottle maybe less hazardous? Looks for bubbles, associated with vacuum leak.

If you spray that onto vacuum leak, you will pull soapy water into your intake manifold. Vacuum leaks suck air into the engine.

May 9, 2020 | 01:58 PM

#16

Slowcrash_101

Joined: Jul 2013

Posts: 5,733

Likes: 632

The brake booster hose? Other places that could cause a vacuum leak besides IACV? Throttle body gasket, IM gasket, Injector seals, oil cap? Unless the TB or IM have been previously removed we can eliminate those as sources on an otherwise stock car. That only leaves the injectors, IACV,. oil cap or booster hose.