SPONSORED LINKS

1998 Chevrolet Silverado RPM

Tiny
JOHN2424
  • MEMBER
  • 1998 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
Engine can rev above 2000rpm in park but try to drive it. Truck will not go above 2000rpm Have changed throttle position sensor, fuel filter, cats, cap, rotor, plugs, wires, Truck just seems to fall on its face under load. It Runs perfect in park revs up no miss. Changed crank sensor as well. Hook Up scanner its says throttle sensor slow.
SPONSORED LINKS
Tuesday, December 17th, 2013 AT 2:40 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check hoses to map sensor for being soft if they are replace them. Checik under tbi unit for a vacuum leak back and front they like to blow there. Then check fuel pressure 9-11 psi.
Was this
answer
helpful?
Yes
No
-1
Tuesday, December 17th, 2013 AT 3:18 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