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Limited to 3k RPM?


kxri318

Well-Known Member
Joined
Jan 31, 2023
Messages
96
City
Ohio
Vehicle Year
1986
Transmission
Automatic
1986 Ranger 2.9 auto 2WD. I floored it for a couple seconds or so while driving yesterday and it's like it hit a 3k rpm wall. It stuck exactly at 3k and held it; didn't go over that at all according to my tach and also what I was hearing. Doesn't affect normal driving at all because I rarely go above 2500ish rpm when getting up to speed, but was curious why this might be happening. I didn't see if it gets stuck at 3k in park/neutral.
 
Was it missing or anything? Or would it just not go higher?
 
Does speedometer work?

Clogged exhaust can limit RPM, as can clogged fuel filter

But 3,000RPM is pretty specific, its the REV limiter RPM when speed is at 0MPH or computer thinks Automatic trans is in Neutral/Park
 
Does speedometer work?

Clogged exhaust can limit RPM, as can clogged fuel filter

But 3,000RPM is pretty specific, its the REV limiter RPM when speed is at 0MPH or computer thinks Automatic trans is in Neutral/Park
The speedometer works fine, but I can't lie, I haven't checked the fuel filter once in my 2 year ownership of the truck. Fuel pressure at idle is a good 30-40 psi though. Exhaust is the same diameter pipe that it came with and the cats are gutted.
 
Does speedometer work?

Clogged exhaust can limit RPM, as can clogged fuel filter

But 3,000RPM is pretty specific, its the REV limiter RPM when speed is at 0MPH or computer thinks Automatic trans is in Neutral/Park
I dont think a 2.9 has a rev limiter.

The spedometer works fine, but I can't lie, I haven't checked the fuel filter once in my 2 year ownership of the truck. Fuel pressure at idle is a good 30-40 psi though. Exhaust is the same diameter pipe that it came with and the cats are gutted.
30-40psi is perfect.

If it was a fuel issue it would sputter.

Cats are a non issue...so rule that out.

Its weird it doesnt miss or anything.

Maybe a weird distributor or TFI issue? I honestly dont know.

Is it timed correctly and the SPOUT connector plugged in?
 
I dont think a 2.9 has a rev limiter.


30-40psi is perfect.

If it was a fuel issue it would sputter.

Cats are a non issue...so rule that out.

Its weird it doesnt miss or anything.

Maybe a weird distributor or TFI issue? I honestly dont know.

Is it timed correctly and the SPOUT connector plugged in?
I think it was just a fluke. I near floored it today (for science and definitely not for fun ;)) and it went from 1800-3800 then shifted fine. To answer your question though, it's timed right and the spouts plugged in
 
I think it was just a fluke. I near floored it today (for science and definitely not for fun ;)) and it went from 1800-3800 then shifted fine. To answer your question though, it's timed right and the spouts plugged in
Eh run it see if it does it again i guess
 

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