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Major loss of power on hills


puty72

puty72

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1989 ranger 2.9 auto 4x4. 121,000 miles . I am having problems with my truck with major loss of power going up hills it won't even kick down in just makes a loud deep exhaust note with the Rpms up around 4k . It just started doing this a week ago
 


adsm08

adsm08

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If the engine is turning 4K it sounds to me like it did kick down (other wise known as down shifting). Is it possible the trans is slipping rather than a loss of engine power?
 

RonD

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Yes, 4,000rpms would be about 90mph in 3rd gear, assuming 4 speed A4LD.

If it was a sudden loss I would check exhaust for blockage, muffler or Cat could have collapsed inside restricting exhaust flow.
 

softshellcrab

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I just got over the same issues with my 90 2.9 and it was timing. Although your's doesn't sound that easy.
 
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