SPONSORED LINKS

Idle problem and running rich

Tiny
TEXASSTANG
  • MEMBER
  • 2002 FORD MUSTANG
  • 4.6L
  • V8
  • RWD
  • MANUAL
  • 134,000 MILES
My Mustang will idle normally but when the rpms drop from high the car dies out. If I'm coasting the rpms hold at 3000 until I stop, then it dies. The car is throwing P0172 and P0175, so both banks are running rich. The car has new internals, block, upper plenum, iac, egr valve, throttle position sensor, hoses and gaskets.
SPONSORED LINKS
Sunday, January 31st, 2016 AT 5:01 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuel pressure with a gauge auto parts rent it, check for a vacuum leak see pics for causes and areas to check including air leaks like engine grommets.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Monday, February 1st, 2016 AT 6:58 AM

Please login or register to post a reply.

Related Engine Rich Content

How to Read Codes
VIDEO
How to Read Codes
Instructional repair video
Engine Running Rich
GUIDE
Engine Running Rich
This guide was created to show you what can cause an automotive engine to have a rich fuel mixture, which may cause black smoke to be released form the exhaust tail pipe as...
VIEW MORE

Sponsored links