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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

codes 44 and 25

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Old Sep 27, 2009 | 05:47 PM
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codes 44 and 25

As I have posted previously I am going to up grade my fuel system but first I am having a problem with the truck under acceleration. It boggs and shudders and it idles fine. the fuel pressure is 36 psi according to the gauge i used. i used my neighbors scanner i pulled codes 44 and 25. Any and all help is appreciated. Could it be the FPR? I pulled the vacuum hose and there was no fuel leaking.
 
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Old Sep 27, 2009 | 11:06 PM
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Most people get a code 44 because they have disconnected the air pump system(smog pump).

Code 25 is a knock sensor code. When the scanner told you to, did you goose the throttle? If so, and you still get a code 25, then run the scan again and when it tells you to goose the throttle, peck on the exhaust manifold with a hammer. This will simulate the engine knocking and should make the code 25 go away.
 
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Old Sep 29, 2009 | 08:57 PM
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thanks for the info Frankilin. Looks like some one removed the sensor. The threads are messed up. i am going to see if i can get the sensor then I'll run a tap in it to clean it up.
 
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Old Dec 9, 2009 | 12:50 PM
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Franklin2, i just pulled these codes on my truck as well (25 and 44). I assume the code 44 is from removing the AIR pump. As for the code 25, does that indicate a bad knock sensor?
 
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Old Dec 9, 2009 | 08:20 PM
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Originally Posted by 86stepsideF150
Franklin2, i just pulled these codes on my truck as well (25 and 44). I assume the code 44 is from removing the AIR pump. As for the code 25, does that indicate a bad knock sensor?
You need to re-run the test like I described above.
 
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