SPONSORED LINKS

Missing when RPMs are high

Tiny
KBOICE
  • MEMBER
  • 1992 CHEVROLET LUMINA
  • 95,000 MILES
My chevy lumina (when taking off and before it switches gears and cannot figure it our

I have replaced the plugs, wires, gas filter.
i have checked the coil packs all working properly.
I have had the fuel pressure checked it is 43psi

I cannot figure out why it will do this if you take off really slow and dont give it too much gas starting from a stop it will do ok. It only seems to do it at a higher rpm.
please try to lead me in the right direction
thanks
SPONSORED LINKS
Saturday, January 7th, 2012 AT 3:23 AM

3 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Could be compression, timing, or a fuel system needing cleaning.
Was this
answer
helpful?
Yes
No
Saturday, January 7th, 2012 AT 3:41 AM
Tiny
KBOICE
  • MEMBER
  • 3 POSTS
I am running fuel system cleaner in it today to try it. Is there a way to change the timing even though it is all electronic?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, January 7th, 2012 AT 3:53 AM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Nope. Generic answer. If it's timing, it's a sensor or computer issue.
Check the crankshaft position sensor at the end of the crank on the right side of the engine. Make sure it is properly installed and gapped.
Was this
answer
helpful?
Yes
No
Saturday, January 7th, 2012 AT 4:51 AM

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