SPONSORED LINKS

2002 GMC Sierra RPM and volts drop when braking

Tiny
CHRIS7474
  • MEMBER
  • 2002 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
When braking volts drop and rpm drop. I have to put it in neutral and rev it to keep it running. I had to replace battery and alternator and still doing it. Any answers?
Thursday, January 14th, 2010 AT 10:54 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
If the RPS's drop, that is most likely why the volts drop. Have you checked for a vacuum leak to the power brake booster?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, January 15th, 2010 AT 12:35 PM
Tiny
CHRIS7474
  • MEMBER
  • 1 POST
Checked vacuum lines and tested. Everything good. Still wants to stall when braking.
Was this
answer
helpful?
Yes
No
Saturday, January 16th, 2010 AT 12:14 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
When you come to a stop, does the engine act like a vehicle with a standard transmission not having the clutch pushed in, or does it just slowly die without the vehicle stopping completely? Also, have you vacuum tested the brake booster?
Was this
answer
helpful?
Yes
No
Saturday, January 16th, 2010 AT 12:39 PM

Please login or register to post a reply.

Related Brake Content

Sponsored links