1998 Isuzu Trooper Check Engine Light On

Tiny
BRAZER
  • MEMBER
  • 1998 ISUZU TROOPER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 53,000 MILES
I changed the maf senser and the light came on a day later. OBC Code 171 high idle. Should I change the MAP senser too?
Thursday, March 11th, 2010 AT 4:41 PM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
P0171?


https://www.2carpros.com/forum/automotive_pictures/62217_171_2.jpg


This means either the engine has a vacuum leak, or fuel pump is weak...You may have a vacuum leak, get a can of spray Throttle body cleaner, spray the vac lines and maniflod area, when the idle changes, youve found the leak! You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs!
Or test the fuel pressure:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, March 11th, 2010 AT 5:00 PM

Please login or register to post a reply.

Related Check Engine Light Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
Check Engine Light
GUIDE
Check Engine Light
Why is my check engine or service engine soon turned on? In this guide we talk about what this is associated with this notorious light, what it is used for and what you...
VIEW MORE

Sponsored links