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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 02-16-2014
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1995 3.0 question

Hello everyone I have a question about the engine in my truck that I could not find an answer to elsewhere.

It has the 5spd manual and originally came with no tach. I put a tach in the truck and I find that my rpms are much higher than expected for just cruising around. To go 70 in 5th im at 3500rpm! My normal cruising rpm is around 3000. If I shift up to put it around 2k I have lawnmower power and tons of power lag.

Is this normal for this engine?
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Old 02-16-2014
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I would look at the label on the drivers door and see what axle you have.
3.73 was the usual but yours could have a 4.10, people ordered 4.10 axles if they would be pulling trailers.

Last edited by RonD; 02-16-2014 at 10:20 PM.
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Old 02-16-2014
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I have a 3.45 ratio.
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Old 02-16-2014
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Did you get the right tach wire? Since the clusters were used in the expo which came with the 5.0 it may be reading as if its a v8 which could throw your numbers off 3500 with 3.45 is a lot at 70 i cruise at about 3000 maybe a little more and i have 3.73 gears. Id bet its a wiring issue with the tach and not mechanical.
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Old 02-16-2014
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I had my mechanic install it. I will double check his work and I know for a fact the tach is set for a v6.

What would you guys do if my mechanic did in fact wire this wrong? I did take it back to him saying the rpms were way too high and he said there was nothing wrong. Is it reasonable for me to ask for a refund?
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Old 02-17-2014
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With 3.45 axle, 5th gear at .79 and 26" tires at 70MPH, engine RPM would be 2,500

So either the tach or speedo is off
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Old 02-17-2014
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Edit to my earlier post i had it on the freeway today at 70 with 3.73 gears and In 4th i get around 2800 in 5th i get about 2400 rpms. Something in your gauges is off. I hit the governor at 90 before it will even see that kind of RPM
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Old 02-18-2014
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Problem fixed, thanks everyone.
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Old 02-19-2014
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Quote:
Originally Posted by ranger216 View Post
Problem fixed, thanks everyone.
Any insight into how it was fixed might be helpful to others down the road
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