Ranger Engine Knock

BIKEBALD

MEMBER
FORD RANGER

I have a 2001 Ranger 4.0 liter 4 wheel drive 67k miles. I have a knock/ping on accelleration or when I put it under a strain, like going up a hill. I have had it tuned and no engine codes appeared. The mechanic said that he thought it may just be a fouled injector and ran some cleaner through the intake. Helped a little, but it is back as strong as ever in less than three weeks. Could it be a bad injector, or something else.

Getting frustrated and need some advice.
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6 Replies

GODBEAR839

MECHANIC
77 POSTS

HAve you tried either raising the octane of gas you put in it or two trying some octane booster to see if that makes it less/go away. If so It might need to run on a higher octane fuel to not ping. My Uncle wasted a small fortune on a small block ford trying to fix this when all he needed was higher octane gas.

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Monday, February 20th, 2006 AT 10:26 AM

BIKEBALD

MEMBER
4 POSTS

That I have tried. Even used the Sunoco 94 and added the Octane 107 Booster. Still the same. I am about to give up.

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Tuesday, February 21st, 2006 AT 4:50 PM

XJETMECH

MEMBER
12 POSTS

Could be the knock sensor

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Tuesday, March 14th, 2006 AT 12:58 PM

BIKEBALD

MEMBER
4 POSTS

Where is the knock sensor located?

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Tuesday, March 14th, 2006 AT 4:16 PM

PEPPERMRJ

MECHANIC
1,158 POSTS

Don't know for sure. If it is a V motor there can be two of them tho. They are very picky about instalatiioon torque. Can't be too tight or too loose or they won't function properly. Need to pick up a manual. Check the links on the blue bar to the left or your local library.

Good luck and let us know, :)