Is some detonation normal?

[Serpentor]

more interesting info online: detonation in '01 - SCOA Bulletin Board

 

[Serpentor]

more info on the Office of Defects Investigation (ODI) (search for TSB)

Make : FORD Model : MUSTANG Year : 2001
Manufacturer : FORD MOTOR COMPANY
Service Bulletin Number : 15611 Date of Bulletin : FEB 01, 2002
NHTSA Item Number : 630657
Component : ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
Summary :
CONCERNS WITH COBRA SPARK KNOCK CONDITION. *TT
Check to Request Research. Submit below.

Make : FORD Model : MUSTANG Year : 2001
Manufacturer : FORD MOTOR COMPANY
Service Bulletin Number : 15571 Date of Bulletin : JAN 01, 2002
NHTSA Item Number : 630113
Component : ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
Summary :
SOME COBRAS MAY EXHIBIT A SPARK KNOCK CONDITION UNDER ACCELERATION. *TT
Check to Request Research. Submit below.

Make : FORD Model : MUSTANG Year : 2001
Manufacturer : FORD MOTOR COMPANY
Service Bulletin Number : 15337 Date of Bulletin : OCT 01, 2001
NHTSA Item Number : 630251
Component : ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
Summary :
SOME COBRAS MAY EXHIBIT SPARK KNOCK CONDITION UNDER ACCELERATION. *TT
Check to Request Research. Submit below.

Make : FORD Model : MUSTANG Year : 2001
Manufacturer : FORD MOTOR COMPANY
Service Bulletin Number : 15247 Date of Bulletin : SEP 01, 2001
NHTSA Item Number : 625791
Component : ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
Summary :
SOME COBRA MODELS MAY EXHIBIT A SPARK KNOCK CONDITION UNDER ACCELERATION. *TT
Check to Request Research. Submit below.

Make : FORD Model : MUSTANG Year : 2001
Manufacturer : FORD MOTOR COMPANY
Service Bulletin Number : 15571 Date of Bulletin : JAN 01, 2002
NHTSA Item Number : 630113
Component : ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
Summary :
SOME COBRAS MAY EXHIBIT A SPARK KNOCK CONDITION UNDER ACCELERATION. *TT
Check to Request Research. Submit below.

not sure how these items correlate to actual Ford TSBs

info is also available here: http://www.edmunds.com/maintenance/...ileage=99,000&zip=94086&type=tsb&serviceType=

 

[Kn38ms]

Make : FORD Model : MUSTANG Year : 2001
Manufacturer : FORD MOTOR COMPANY
Service Bulletin Number : 15571 Date of Bulletin : JAN 01, 2002
NHTSA Item Number : 630113
Component : ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
Summary :
SOME COBRAS MAY EXHIBIT A SPARK KNOCK CONDITION UNDER ACCELERATION. *TT

 

[Serpentor]

Thanks! you are the Man!

 

[Kn38ms]

Thanks! you are the Man!

Be advised that TSB also states that customers may still experience
some light knock even after the flash update. :nonono:
I was in discussion with them on that issue for 15 minutes.
Anyway it will around $70-90 to haveDealers reflash it.

 

[Serpentor]

I'd rather not shell out 400 bucks to fix something that doesn't happen too often for me...
[ame=http://forums.corral.net/forums/showthread.php?t=58045]Back to stock filter, ping much reduced - Corral Forums[/ame]

this thread has some good info on how this guy fixed it with the SSM, cleaning the MAF, and colder plugs...

 

[Kn38ms]

I'd rather not shell out 400 bucks to fix something that doesn't happen too often for me...

Agreed.
I only get it for a for small, quick ping and stops as the revs climb.
Furthermore it does not happen everytime.
Me thinks the colder plug may be worth a try.
My plugs may be fouled anyway from the original owner just
starting the engine twice a month and not driving it.
He put on 2500 miles in 8 years :bored:

 

[Serpentor]

ok.. had the SSM fix... still has some ping. What finally fixed it for me is to clean the MAF.
I cleaned it, drove around today (its pretty warm today) and no ping what so ever.

If anyone has this problem, start with cleaning the MAF, then colder plugs, then to the SSM.

 

[CobraRed01]

Had the Ford TSB-prescribed reflash many moons ago...with a only a few K on the clock. Never had a serious knock...just a light pinging. Reflash took care of it. Haven't heard it since.