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Car jerking in slow speed and high rev at idle

Tiny
ADI1991
  • MEMBER
  • 1996 NISSAN MAXIMA
  • 150,000 MILES
Hi
i have nissan maxima 96 with 150k miles on it

i cleaned IAC valve and throttle body after that car is jerking at slow speed and the RPM is on 2000 at idle.

before cleaning this the problem is only with IAC valve that the car suddenly dies at idle or at slow speed.

no DTC appear.
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Wednesday, April 24th, 2013 AT 11:24 AM

5 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuel pressure first
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Wednesday, April 24th, 2013 AT 12:25 PM
Tiny
ADI1991
  • MEMBER
  • 60 POSTS
I checked the fuel pressure its ok.

Now what I will do with that.
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Thursday, April 25th, 2013 AT 4:39 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Fuel pressure must be 43 psi not ok
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Thursday, April 25th, 2013 AT 5:33 AM
Tiny
ADI1991
  • MEMBER
  • 60 POSTS
Sir
Before 2 months I changed my fuel pump
And today I checked the pressure is normal

Before cleaning IAC and throttle body the car was working good with only little bit hesitating
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Thursday, April 25th, 2013 AT 8:39 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes as well and check for a vacuum leak it may need a new iac was throttle plate cleaned on both sides or just one, if not clean on both sides. What is fuel pressure? Not normal or ok what is psi reading?
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Thursday, April 25th, 2013 AT 9:23 AM

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