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

100,685

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

3 of 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 of 3 people found this helpful.
100,685

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 of 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 of 1 people found this helpful.
3,220

Does it knock louder rite at start-up?

4 of 4 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 of 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 70,648 nationwide Grand Cherokee listings starting at $1,045.

ZIP:

Jeep Grand Cherokee Experts

  • #1
    inuevafreak
    Reputation
    2,120
  • #2
    Tom Demyan
    Reputation
    1,900
  • #3
    thejeepdoctor
    Reputation
    1,830
View All

Related Models For Sale

Used Jeep Cherokee
365 Great Deals out of 47,069 listings starting at $2,795
Used Jeep Wrangler
313 Great Deals out of 16,229 listings starting at $2,500
Used Ford Explorer
858 Great Deals out of 63,389 listings starting at $995
Used Dodge Durango
306 Great Deals out of 21,419 listings starting at $2,195
Used Toyota 4Runner
297 Great Deals out of 21,852 listings starting at $1,700
Used Chevrolet Tahoe
653 Great Deals out of 39,508 listings starting at $1,000
Used Ford F-150
2,315 Great Deals out of 183,060 listings starting at $1,000
Used Chevrolet Silverado 1500
2,133 Great Deals out of 167,340 listings starting at $1,995
Used BMW X5
443 Great Deals out of 12,266 listings starting at $2,000
Used Chevrolet Camaro
416 Great Deals out of 30,789 listings starting at $3,550
Used Ford Mustang
731 Great Deals out of 38,316 listings starting at $895

Used Cars For Sale

2018 Jeep Grand Cherokee For Sale
21,784 listings starting at $27,190
2017 Jeep Grand Cherokee For Sale
91 Great Deals out of 21,277 listings starting at $21,999
2016 Jeep Grand Cherokee For Sale
21 Great Deals out of 2,360 listings starting at $19,700
2015 Jeep Grand Cherokee For Sale
185 Great Deals out of 5,333 listings starting at $17,295
2014 Jeep Grand Cherokee For Sale
177 Great Deals out of 6,181 listings starting at $13,688

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.