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RPM fluctuation

Tiny
SAG70SMR
  • MEMBER
  • 2001 NISSAN ALTIMA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 173,000 MILES
Car gets up to speed and will maintain. But there is rpm fluctuation when starting off from a stop. Doesn't have power used to have. Rotor button came off inside distributor cap bout week who on interstate. Replaced button and cap.
Monday, January 11th, 2016 AT 7:55 AM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and check fuel pressure with a gauge. Clean throttle plate and iac hole with choke cleaner.
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Monday, January 11th, 2016 AT 9:27 AM
Tiny
SAG70SMR
  • MEMBER
  • 2 POSTS
Kool. What is iac hole? Google throttle plate cleaning?Sprayed the maf sensor. Seemed to run better but still has that rpm variation going on. The fluctuation in rpm is very minimal. Man at napa told me to change plug wires. Going to do that too
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Monday, January 11th, 2016 AT 11:42 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Parts guys don't know crap about fixing car engines they just sell parts. Also look for a vacuum leak the oblong hole near throttle plate is for iac-idle air control
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Monday, January 11th, 2016 AT 12:06 PM

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