only 3,000 rpm

[mounties83]

i dont know if its an electrical situation or what but my truck can only rev up to about 3 grand in any gear but when its in neutral it can hit the red line. It seems to have full power when i hit 3 grand. I just want to know what the problem could be. it has a 4.0 ohv 5 speed manual, dual straight pipe exhaust w/high flow cat, with 3.27 gear ratio with 31" tires. Could the gear ratio have something to do with it or the exhaust??? Any input would be great.

 

[BRUTUS_T_HOG]

straight pipes? are they loud or quiet? that would tell you if you had a plugged exhaust.

check the air filter and housing for clogs.

then you'll have to check fuel pressure if you don't find anything

 

[8sechonda]

did u check for codes? hope its not ur computer bro...

 

[mounties83]

no codes it, the exhaust is loud so no, like it feels to get good power but the rpms just dont seem right.

 

[Big Jim M]

I have heard that in neutral many vehicles will only rev to three grand. Perhaps your computer thinks you are in neutral? Might it be the neutral/safety switch is screwed?
Big JIm

 

[Hahnsb2]

I know many newer automatic vehicles have rev limiters at 3-4k in neutral/park, I've never seen manual vehicles do this... Perhaps your truck has an automatic computer and the neutral switch is opposite of what it is on an automatic?

 

[mounties83]

what i truly think it is is that my instrument cluster gauges are way off. My fuel gauge is messed up because it reads over full when i fill it up. But my speedo seems good. i have a bunch of gauges like diff. temp, oil pressure, air fuel ratio, and oil temp.

 

[bunnybuster]

I know my 2008 ranger threw me for a loop.
At 3,000 rpm it would bog in park or nuetral.
then i found out about the rev limiter. It is an automatic trans.
I never had the limiter on my previous 5 speed standard shift rangers.

 

[Ranger44]

How are you reving an engine in gear?

Or do you mean, in gear with clutch pedal in?