My 89 Trooper 2.6L 4 cyl has 159,000 miles on it. It runs great but after it warms up and I stop at intersections, the engine idles up and down between 1500 and 2000 rpms. Any ideas?

Asked by Feb 16, 2013 at 04:22 PM about the 1989 Isuzu Trooper

Question type: Maintenance & Repair

When warm the engine idles up and down, 1500 to 2000 rpms.

1 Answer

Several things can cause loping like that. egr valve stuck, timing, vacuum leak

2 of 2 people found this helpful.

Your Answer

Isuzu Trooper Experts

  • #1
    N8dogg
    Reputation
    730
  • #2
    tennisshoes
    Reputation
    450
  • #3
    DerekW85
    Reputation
    210
View All

Related Models For Sale

Used Toyota 4Runner
275 Great Deals out of 23,387 listings starting at $2,300
Used Toyota Land Cruiser
16 Great Deals out of 1,033 listings starting at $5,995
Used Mitsubishi Montero
121 listings starting at $1,750
Used Jeep Cherokee
383 Great Deals out of 52,605 listings starting at $1,900
Used Ford F-150
2,610 Great Deals out of 198,105 listings starting at $1,300
Used Jeep Wrangler
345 Great Deals out of 17,445 listings starting at $2,995
Used Isuzu Amigo
7 listings
Used Nissan Pathfinder
365 Great Deals out of 26,879 listings starting at $1,500

Used Cars For Sale

2002 Isuzu Trooper For Sale
16 listings starting at $2,900
2001 Isuzu Trooper For Sale
17 listings starting at $2,991

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.