engine knocking in 02 grand cherokee ...4.7l engine

35

Asked by Apr 05, 2013 at 10:54 PM about the 2002 Jeep Grand Cherokee Sport 4WD

Question type: General

7 Answers

106,475

Knocking - when does it happen? Where is it coming from? When did you discover it? When does it change?

3 people found this helpful.
35

it burns oil.....no oil leaks.....don't know where the ticking/knocking is coming from.........my oil levels are normal ....it ticks/knocks while it idling and when driving

3 people found this helpful.
106,475

If it's ticking all the time, it could be a collapsed lifter for the valves. If it knocks on acceleration, it could be a rod bearing.

2 people found this helpful.

sounds like the timing is way too soon, 'course maybe this is an engine to where the distributor does not exist, so it's gotta be a vaccuum leak, you could use an unlit propane torch to find it...the speed will increase when you find it~

1 people found this helpful.
3,450

Does it knock louder rite at start-up?

5 people found this helpful.
20

hey mrmoony i have the same thing going on with mine. yes... it knocks louder at start up. mine actually stops knocking after a while.

2 people found this helpful.

still maintain that it's the vacuum line what connects the fuel pressure regulator, would go defective...leak vacuum causing high idle/and fast timing and would not regulate the fuel to the rail~

Your Answer

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 75,648 nationwide Grand Cherokee listings starting at $899.

ZIP:

Jeep Grand Cherokee Experts

  • #1
    inuevafreak
    Reputation
    2,220
  • #2
    Tom Demyan
    Reputation
    2,090
  • #3
    thejeepdoctor
    Reputation
    2,010
View All

Related Models For Sale

Used Jeep Cherokee
288 Great Deals out of 67,163 listings starting at $2,795
Used Dodge Durango
218 Great Deals out of 25,141 listings starting at $800
Used Ford Explorer
801 Great Deals out of 64,315 listings starting at $1,000
Used Jeep Wrangler
250 Great Deals out of 19,077 listings starting at $2,500
Used Toyota 4Runner
281 Great Deals out of 32,848 listings starting at $950
Used Chevrolet Tahoe
528 Great Deals out of 36,655 listings starting at $1,375
Used Ford F-150
2,344 Great Deals out of 215,477 listings starting at $1,300
Used Chevrolet Silverado 1500
1,781 Great Deals out of 149,285 listings starting at $1,495
Used Chevrolet Camaro
224 Great Deals out of 28,922 listings starting at $3,900
Used Ford Mustang
270 Great Deals out of 37,081 listings starting at $2,150
Used BMW X5
325 Great Deals out of 18,048 listings starting at $2,895

Used Cars For Sale

2018 Jeep Grand Cherokee For Sale
68 Great Deals out of 42,860 listings starting at $22,977
2017 Jeep Grand Cherokee For Sale
173 Great Deals out of 5,989 listings starting at $19,969
2016 Jeep Grand Cherokee For Sale
54 Great Deals out of 2,059 listings starting at $17,500
2015 Jeep Grand Cherokee For Sale
276 Great Deals out of 9,624 listings starting at $12,890
2014 Jeep Grand Cherokee For Sale
49 Great Deals out of 4,001 listings starting at $12,436

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.