SPONSORED LINKS

'95 GMC Yukon idle/heater problems

Tiny
MOXONYUKON
  • MEMBER
  • 1995 GMC YUKON
  • 150,000 MILES
I have a 1995 GMC Yukon that has a rough idle and when coming from a stop, it will spit and sputter for a second before taking off. The heater is also not working. I was told that these problems could be related and be a vacuum issue. I have replaced the EGR valve, MAP sensor and EGR solenoid and checked the vacuum diagram under the hood and all lines seem to be in good order. The heater fuse in the cab is also fine. Where would you suggest I go from here?
SPONSORED LINKS
Friday, December 23rd, 2011 AT 10:54 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Heater possibilities is low coolant, bad thermostat, clogged heater core or blend door issue.
The miss could be from a plug or coil failure but a compression test is in order before throwing any parts at it.

Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Friday, December 23rd, 2011 AT 11:14 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the idle air control valve, EGR valve and TPS sensor for the rough idle-

Heater: Power the blower motor direct from the battery and see if it'll turn on
Was this
answer
helpful?
Yes
No
Friday, December 23rd, 2011 AT 11:15 PM

Please login or register to post a reply.

Related Heater Not Working Content

Heater Not Working
VIDEO
Heater Not Working
Instructional repair video
Heater Not Working
GUIDE
Heater Not Working
Step 1 - A heater cannot operate unless the engine is full of coolant/antifreeze. If coolant level is low check the system for leaks.
VIEW MORE

Sponsored links