Mechanics

I HAVE 160 DOHC,WHEN DRIVING AND I WANT BRAKE,REVS COME DOWN AND CAR STALLS?

1998 Nissan Sentra • 300,000 miles

I have sentra 160 DOHC, when driving and I want brake, revs come down and car stalls?
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Djtayer
March 24, 2012.




First eliminate all vacuum or air leaks in the system. You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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Wrenchtech
Mar 24, 2012.
Thanks, how do I replace IAC?

Tiny
Djtayer
Mar 24, 2012.
Do the other stuff first and then worry about that.

Wrenchtech
Mar 24, 2012.
Hi, did what you told me to do, still the same. What now?

Tiny
Djtayer
Mar 24, 2012.
There are no specific instructions for changing the IAC. It's held in by a couple bolts.

Wrenchtech
Mar 24, 2012.
Thank you, it worked. Now there's a new problem fuel consumption seems to be a lot, idling is at 2000 rpms, is this normal, I changed the fuel filter, the carburator is okay.

Tiny
Djtayer
Mar 26, 2012.
Look for vacuum leaks

Wrenchtech
Mar 26, 2012.
Okay thanks, I know it's a vacuum leak, but where do I start?

Tiny
Djtayer
Mar 26, 2012.

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