Knock sensor

2006 FORD FREESTAR
180,000 MILES • 3.9L • V6 • 2WD • AUTOMATIC
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CALVIN RAY HARIS
  • MEMBER
  • 2 POSTS
Running and driving good, got A/C charged. It started acting like it had no oil, pining, running bad, and started losing and running bad like air, fuel, timing off. Thanks
Sep 14, 2018 at 12:43 PM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good evening.

Is the check engine light on? If it is, do you know the code?

Possible issue:

1. Fuel pressure.

2. Timing off.

3. EGR valve not working.

4. Catalytic converter clogged not allowing the engine to breathe.

Roy
Sep 14, 2018 at 7:06 PM
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CALVIN RAY HARIS
  • MEMBER
  • 2 POSTS
I would like to know where the knock sensor or sensors are located.
Sep 18, 2018 at 1:56 PM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Procedure and location below:

Roy

Removal and Installation
1. Disconnect the battery ground cable.
2. Remove the air cleaner outlet pipe.
3. Remove the front and rear roll restrictor bolts and the roll restrictor.
- To install, tighten to 63 Nm (46 lb-ft).

4. Remove the upper and lower roll restrictor bolts and the roll restrictor bracket.
- To install, tighten to 90 Nm (66 lb-ft).

5. Disconnect the knock sensor (KS) electrical connector.
6. Remove the nut and the KS.
- To install, tighten to 20 Nm (15 lb-ft).

7. To install, reverse the removal procedure.
Sep 19, 2018 at 1:50 AM