F150online Forums

F150online Forums (https://www.f150online.com/forums/)
-   V8 Engines (https://www.f150online.com/forums/v8-engines-24/)
-   -   4.6 pinging (detonation) (https://www.f150online.com/forums/v8-engines/277630-4-6-pinging-detonation.html)

T.C.Barrett 03-14-2007 09:51 PM
4.6 pinging (detonation)
 
My '98 is having problems pinging with any fuel under premium. Should I replace the knock sensor and see if that fixes it or is there another cure anyone may offer. It runs pretty well, but lacks the ooomph I desire sometimes. Any suggestions?

Thanks,

Tim

Bluegrass 03-15-2007 01:14 AM
You need to start with looking at any codes stored.
Pinging can be cause by a leaking EGR, carbon in the cylinders, poor fuel quality, blocked cats, mass air meter contamination, false requests to open the EGR.,
air leaks.
Have to find a place to start the search.

torkum 03-15-2007 07:36 AM
How many miles has it been since you changed the plugs?

T.C.Barrett 03-15-2007 12:02 PM
Originally Posted by Bluegrass
You need to start with looking at any codes stored.
Pinging can be cause by a leaking EGR, carbon in the cylinders, poor fuel quality, blocked cats, mass air meter contamination, false requests to open the EGR.,
air leaks.
Have to find a place to start the search.
Bluegrass,

I have replaced the EGR valve, DPFE sensor, and Mass Air Flow sensor. Is a blocked cat fairly common? I got the check engine light to go off, but it then came on again and the pinging never stopped. The Ford dealer said that it is carbon built up on the intake. Also, I always buy good gas (name brand, not discount?). I don't know.

jjmIII 03-15-2007 12:59 PM

Did you clean the TB? I'm sure it needs done if no one ever has.

T.C.Barrett 03-15-2007 01:12 PM
Intake cleaning
 
No, I have not cleaned the intake. I will do that this weekend.

Thanks,

Tim


All times are GMT -4. The time now is 05:34 AM.


© 2024 MH Sub I, LLC dba Internet Brands