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The rpm keeps going up like I am in overdrive and the engine sounds like it racing

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I had the same issue in my truck.My transmissions electrical system was fried & 2nd-3rd gear was gone completely. Had to swap transmissions altogether. Take it to a transmission shop & get it checked out before making any repairs.

Posted on Jul 22, 2013

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Driving along makes a very loud noise like motor is racing, but continue driving, noise goes away then starts again???


Please take a look at your Engine's RPMs when this is happening and let us know, as it will help with the diagnosis. If the Engine RPM is stable (not high during the periods of the racing engine sound), then it sounds like your Radiator Fan clutch may be going out. The noise you are hearing is the fan kicking in and blowing a lot of air, which in turn sounds like the engine is racing.

If the RPMs are increasing with the racing engine sound, it could be the transmission/(clutch if manual trans) slipping.
Hope this helps!

Jun 28, 2015 | 1993 Mercedes-Benz 190

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RPM's go high when driving but then go back to normal


What you are describing sounds normal. RPM's stand for revolutions per minute. Each minute your engine is running, the pistons are going up and down. When you are not going anywhere, your engine is idling and so the RPM's should NOT be very high. However, when you race up a hill, your RPM's SHOULD be high because your engine has to work hard to climb the hill or to go fast.
Idle speed= 650 Revolutions Per Minute. That means your engine cylinders each work 650 times in One minute.
At freeway speeds, your engine will revolve somewhere between 1600 and 2100 times per minute. I hope that helps.

Apr 20, 2015 | Cars & Trucks

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1995 chevy regular cab 4.3l v6 2wd wont go into overdrive


Sounds like it is stuck in second gear. Overdrive only drops rpm by a couple hundred. In third gears you should still be less than 3,000 rpm.

Second gear is a default gear when the transmission is in limp mode. Is the check engine light on? Does it shift if you manual shift through the gears with the gear selector?

Sep 21, 2014 | 1995 Chevrolet C1500

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My motor races to 3000 rpm's when starts and keeps raceing


Sound like you might have a large vacuum leak allowing un-metered air into the engine, either that or your throttle body might be physically sticking open. Possibly a frayed throttle cable.

Jul 17, 2014 | 1996 Buick Park Avenue

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I HAVE A 1999 CHRYSLER CONCORDE LXI, CHECK ENGINE LIGHT COMES ON AND RPM RACE TO 4000 WHEN DRIVING 55MPH?


First thing is to have the computer scanned for trouble codes.
My guess would be a torque converter or overdrive problem.

Jun 26, 2012 | 1999 Chrysler Concorde

2 Answers

2005 Honda Accord engine racing problem


That sounds like a possible vacumn leak

Nov 01, 2011 | 2005 Honda Accord

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I just purchased it today. The RPM's goes up to 4


You'll want to doublecheck & make sure the Overdrive is turned on. That's a high rpm for 55, even high I believe for Interstate cruising at 65-70.

Possibly get back to the dealer immediately if it's not the Overdrive switch.

There are issues with some models that concern the RPM staying around 4,000 even at idle & under the right circumstances, a transmission won't shift as it should based upon engine & driving signals that the Trans computer uses to determine when to shift.

Check your fluid first & remember, Overdrive doesn't work until the fluid reaches a certain temperature.

good luck

Feb 18, 2010 | 2000 Volkswagen Beetle

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RPM's running alittle high at 60mph


ram1105: when you shift out of overdrive the transmission actually is in a 1-1 ratio with the input shaft of the transmission. Meaning for every revolution of the input shaft, the driveshaft turns the same number. When you shift to overdrive, the ratio changes allowing the engine speed and input shaft speed to slow down while the number of RPM's increases on the driveshaft shaft. The change is not too significant. Usually about a 500 RPM change is normal. You may have a problem with slippage within the transmission overdrive unit.
It may be advantageous to have the transmission pan dropped and it's contents inspected for debris. Older Nissan Automatics were not known for failures. The 3N71B was bullet proof and the 4N series which was just an overdrive added to it, were very reliable.
My son, best friend and I road race Nissan 300Z's. There are a variety of gear ratios for the R200 differential. The 3:70 is the tallest factory setup on a production Z, which would give you the lowest RPM at a higher speed. Outside of that, the tallest tires you can run on the car will also lower the RPM's.Don't forget there is always a trade-off. When you make a gear and change to taller gears, the car is going to feel more sluggish off the line. It will take longer to attain 0-60 unless you increase HP & Torque. I can help you there if you want to know how to do it.

Mar 23, 2009 | 1989 Nissan 300ZX

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