SPONSORED LINKS

I have rough running until it gets warm then it has hesitation when accelerating

Tiny
REAON THOMAS
  • MEMBER
  • 1999 LINCOLN TOWN CAR
  • 12,000 MILES
I own a 1999 towncar and when cold, it runs extremely rough for up to 20 seconds, I try to give it gas to make it idle better but it only gets worst. Once warmed up it idle's fine but, when accelerating the car hesitates tremendously. Is there a way I can fix it myself. As of 2 months ago has new fuel pump, new coils, new oil, new filter, and was running fine after the tune up
SPONSORED LINKS
Thursday, October 13th, 2011 AT 1:14 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
Have you checked the IAC and for vacuum leaks?
Was this
answer
helpful?
Yes
No
Thursday, October 13th, 2011 AT 1:22 AM
Tiny
REAON THOMAS
  • MEMBER
  • 3 POSTS
Not 100% sure what the IAC is but I changed the idle control valve/sensor, and made no difference. Throughly checked all vacum lines and vacum connections but no visible problems. There.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, October 13th, 2011 AT 3:23 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
IAC is the part you replaced, idle air control valve. If there are no leaks, make sure the IAC is getting power and the part is functioning.
Was this
answer
helpful?
Yes
No
Thursday, October 13th, 2011 AT 3:41 AM
Tiny
REAON THOMAS
  • MEMBER
  • 3 POSTS
Thx will double check my installation.
Was this
answer
helpful?
Yes
No
Thursday, October 13th, 2011 AT 4:31 AM

Please login or register to post a reply.

Related Engine Hesitate Content

Vacuum Leak Test and Repair
VIDEO
Vacuum Leak Test and Repair
Instructional repair video
Hesitation
GUIDE
Hesitation
An engine hesitation is an interruption of continuous power during acceleration. When a engine is hesitating it will cause the car to lunge or surge which will cause a...
VIEW MORE

Sponsored links