1999 Ford Windstar Pinging Knock

FORD WINDSTAR
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DSHOMAKER
  • MEMBER
  • 2 POSTS
my 1999 ford windstar sel has had a pinging know for about 6to 8 months seems to be turning into more like a knocking noise.Im getting bad gas mileage and a hesitation when it starts up sometimes is this all one problem or do ihave multiple problems and also can please tell me if i have aknock sensor thanks for the help if u can
Apr 13, 2006 at 1:51 PM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
You have a predetonation problem that could damage the engine. The EGR vavle is quite often the culpret. The knock sesnor will retard the timing 4 degrees. Better get it fixed. Good luck
Apr 14, 2006 at 4:03 AM
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DSHOMAKER
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  • 2 POSTS
took it to the dealer and they said my egr ports need to be cleaned found oil in my intake few months ago from my pvc valve clogged what do u think clean the egr ports. thanks alot
Apr 18, 2006 at 11:27 AM

Suggested Repair

Clean the EGR ports and EGR valve, and service the clogged PCV valve that allowed oil into the intake. Predetonation can damage the engine; the knock sensor only retards timing and does not fix the cause.

Conversation Summary

The owner of a 1999 Ford Windstar reports pinging for several months that is becoming a knock, along with poor fuel mileage and occasional startup hesitation, and asks whether a knock sensor is present. An expert identifies predetonation that can damage the engine, often caused by the EGR valve, and notes that the knock sensor only retards timing. The dealer later said the EGR ports need cleaning; the owner also previously found oil in the intake from a clogged PCV valve.

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