: Unstable RPM and Voltage at start up



kaiseresko
08-13-13, 11:55 PM
When I start the truck, my RPM surges as well as my voltage gauge. What could be causing this? It's not transmission because it will do it in any gear. Bad ground? Alternator?

the cadillac man
08-14-13, 01:17 AM
When I start the truck, my RPM surges as well as my voltage gauge. What could be causing this? It's not transmission because it will do it in any gear. Bad ground? Alternator?

If its just the needles then its most likely the stepper motors failing

kaiseresko
08-16-13, 10:13 AM
Not just the needles because the truck surges, I can hear it struggling. The truck lurches forward too.

the cadillac man
08-16-13, 11:49 AM
Not just the needles because the truck surges, I can hear it struggling. The truck lurches forward too.

Clean the throttle body