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I have Sentra 160 DOHC, when driving and I want brake, revs come down and car stalls?

Tiny
DJTAYER
  • MEMBER
  • 1998 NISSAN SENTRA
  • 300,000 MILES
I have sentra 160 DOHC, when driving and I want brake, revs come down and car stalls?
Saturday, March 24th, 2012 AT 1:44 PM

9 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
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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Saturday, March 24th, 2012 AT 2:10 PM
Tiny
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Thanks, how do I replace IAC?
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Saturday, March 24th, 2012 AT 2:21 PM
Tiny
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Do the other stuff first and then worry about that.
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Saturday, March 24th, 2012 AT 2:27 PM
Tiny
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Hi, did what you told me to do, still the same. What now?
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Saturday, March 24th, 2012 AT 7:57 PM
Tiny
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There are no specific instructions for changing the IAC. It's held in by a couple bolts.
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Saturday, March 24th, 2012 AT 9:49 PM
Tiny
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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.
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Monday, March 26th, 2012 AT 5:51 PM
Tiny
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Look for vacuum leaks
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Monday, March 26th, 2012 AT 6:06 PM
Tiny
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Okay thanks, I know it's a vacuum leak, but where do I start?
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Monday, March 26th, 2012 AT 6:28 PM
Tiny
TFJ3038
  • MEMBER
  • 1 POST
  • 2004 NISSAN SENTRA
  • 1.8L
  • 4 CYL
  • AUTOMATIC
  • 46,500 MILES
My car has had an overheating problem for little bit, it was not anything major at first. Every now and then the temperature gauge would spike for a little then drop back down. After a week or so a rev limiter would kick in at 2000 rpm's. If I pulled over and let the car sit for a few minutes it would be okay for little while then it would do it again. I replaced the radiator cap and thermostat. Also, when using a code reader it came up as a bad thermostat but even after replacing it it still does it and the temperature gauge stays hot for a longer time before randomly dropping.
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Monday, August 14th, 2017 AT 7:58 AM (Merged)

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