1997 Jeep Grand Cherokee Logo
Posted on Jul 25, 2012
Answered by a Fixya Expert

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Knocking sound under hood of 97 jeep

Have a 97 jeep cherokee 6cyl. It started over heating and leaking so the water pump and thermostat were replaced and so it stopped leaking and over heating but there is this little knocking sound that gets louder the longer it runs and also when the wheel gets turned.. Any ideas what it could be?

1 Answer

Stephen

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  • Jeep Master 21,873 Answers
  • Posted on Jul 26, 2012
 Stephen
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First I was going to say the valves were damaged from the heat or lack of oil, but that would not make sense if the steering wheel is turned.
The power steering is about the only thing affected by the steering wheel.
I would take a piece of heater hose and use it as a stethoscope to listen around the pulleys for the noise with someone turning the wheel.

5 Related Answers

emissionwiz

Marvin

  • 85242 Answers
  • Posted on Mar 02, 2009

SOURCE: Turn signals not working on 2001 Jeep Grand Cherokee

replace the turns signals flasher unit.

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Anonymous

  • 58 Answers
  • Posted on Apr 12, 2009

SOURCE: I need to replace the water pump on a 97 jeep

there are 4 nuts on the back of the fan and a big nut on the fan shaft turn the one on the shaft toward the right

Anonymous

  • 1498 Answers
  • Posted on Sep 19, 2009

SOURCE: Replacing water pump 95 JGC

Hello Sir,

Here's a step by step proceedure to remove and replace the water pump on your Cherokee.

Be advised,all 4.0L engines, some 2.8L engines and some 4.2L engines have areverse rotating water pump. You can ID these from the word REVERSE orREV imprinted or cast on the housing and/or fan. There will also be an'R' stamped into the impellor.

Make sure your replacement pump is the correct type, If not, expect some major turmoil.

The procedure:
1. Remove negative battery cable
2. Open radiator valve - drain cooling system2.gif
3. Remove cooling fan2.gif and shroud
4. Remove belts (see my tip on serpentine belts2.gif if needed)
5. Remove water pump pulley from hub
6. Remove hoses from water pump
7. Remove accessory brackets from the water pump.
When removing the P/S pump and/or AC compressor, leave the hoses attached and move them out of the way.
8. Remove the remaining bolts and detach the water pump from the engine.The bolts are three different lengths. Make note of where they camefrom.
9. Compare the new and old pumps. Make sure they match.
10. Scrape off the old gasket material.
11. Apply a thin continuous line of RTV High Temp sealant to the water pump side of the gasket.
12. Put a couple bolts through the pump to hold the gasket in place and mount the gasket.
13. Apply Another coat to the other side of the gasket.
14. Attach the pump to the engine. Screw the bolts in finger tight.
15. Attach the remaining bolts.
16. Tighten them up in 1/4 turn increments.
17. Re-attach all the stuff you removed
18. Refill the coolant, adjust belt tension.
19. Run the engine and check for leaks.

Hope this is very helpful
Mike

Anonymous

  • 1985 Answers
  • Posted on Jan 12, 2010

SOURCE: 1996 jeep grand cherokee blower works but no heat

Since your blower is working and it is a heat issue,thats where we'll start,First thing is have you checked the coolant level in the radiator when engine is cold,make sure it is filled to top,next verify you have coolant in reserve ,Start your van and get it up to normal operation temperature,If your heat gauge on the dash works correctly it should be 190 degrees,Now lift the hood and locate the two heater hoses going into the heater assembly at the fire wall,Both hoses should be hot to hold on to,if both are hot and no heat inside your problem will be the blend air door in heater assembly.
if neither hose is that hot you need to replace the thermostat in the engine to get it up to 195 degrees.
if one hose is hot and one is luke warm then the heater core is blocked and to blame. hope this helps you.

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Anonymous

  • 1 Answer
  • Posted on Feb 18, 2010

SOURCE: heater core leak in 2002 Jeep Grand Cherokee Ltd

I have 2000 jeep grad cherokee. I have noticed some radiator leak once a while, then was increasing and the light was going on every 3 days or so. So I added STOP LEAK and it did stop, but now the heater is blowing cold air...How can fix this problem? Thank you.

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