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-   -   RPM drop to 500 while driving (https://www.dieselbombers.com/chevy-gmc-6-2l-6-5l/128287-rpm-drop-500-while-driving.html)

Detroit Tahoe 10-02-2015 06:16 AM
RPM drop to 500 while driving
 
hey guys new to the forum.

i have a 97 tahoe that runs fine but randomly the rpms just drop off to 500 while driving for a second then back to normal. Does this randomly. its only shut off on me once while i pulled into my drivway but started rite back up. any ideas?

new parts consist of- injection pump, injectors, fuel lines, filter, tank, sending unit and lift pump

Mayhem 10-02-2015 12:09 PM
Originally Posted by Detroit Tahoe (Post 1099777)
hey guys new to the forum.

i have a 97 tahoe that runs fine but randomly the rpms just drop off to 500 while driving for a second then back to normal. Does this randomly. its only shut off on me once while i pulled into my drivway but started rite back up. any ideas?

new parts consist of- injection pump, injectors, fuel lines, filter, tank, sending unit and lift pump
Check the grounds especially the one on the rear of the passenger side head.

Detroit Tahoe 10-03-2015 08:35 PM
Originally Posted by Mayhem (Post 1099789)
Check the grounds especially the one on the rear of the passenger side head.
Checked all grounds and their all good

Mayhem 10-05-2015 04:57 PM
Originally Posted by Detroit Tahoe (Post 1099777)
hey guys new to the forum.

i have a 97 tahoe that runs fine but randomly the rpms just drop off to 500 while driving for a second then back to normal. Does this randomly. its only shut off on me once while i pulled into my drivway but started rite back up. any ideas?

new parts consist of- injection pump, injectors, fuel lines, filter, tank, sending unit and lift pump
Do you have a spare PMD? is it relocated, if not you should get one.

Detroit Tahoe 10-05-2015 05:17 PM
Originally Posted by Mayhem (Post 1099948)
Do you have a spare PMD? is it relocated, if not you should get one.
The pmd is relocated to the front bumper and I tried my spare with no difference


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