SPONSORED LINKS

RPM's flucate

Tiny
BOTY
  • MEMBER
  • PONTIAC GRAND AM
2000 pontiac grandam 66,000 miles 2.4 litre

the car's rpm flucclate when in idle rapidly for about 15 seconds. When I get ready to pull off it stalls i've replaced the spark plugs and boots, both oxygen sensors and idle air control I don't know what else it could be
SPONSORED LINKS
Friday, October 19th, 2007 AT 6:59 PM

1 Reply

Tiny
BADGE726
  • MEMBER
  • 9 POSTS
I'd scan for codes first.

On my Buick 6cyl there is a recommended starting sequence after replacing the IAC(idle air control), turn ignition on 5 sec, off 10 sec and start. It's hard to tell what may be going on without being in front of the vehicle but after the above, I'd suspect the throttle position sensor(TPS).

-Steve
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, October 21st, 2007 AT 8:50 PM

Please login or register to post a reply.

Related Engine Revs Up Content

Idle Air Control Motor Replacement
GUIDE
Idle Air Control Motor Replacement
The idle air control motor or idle speed control motor is designed to adjust the air flow into the intake manifold at engine idle. Engine idle speed is monitored by the PCM...
VIEW MORE

Sponsored links