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Recently my rpm s are running higher than usual, on my 94 pontiac sunbird 3.1 ?

Recently started using more gas and rpms running high, at 70 to 74 mph used to be under 3000 now at 4000 or more?

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  • Cars & Trucks Master
  • 2,620 Answers

Sounds like the catalytic converter could be starting to clogg up.

Posted on Oct 29, 2012

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Posted on Jan 02, 2017

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SOURCE: gmc 94 sonoma

try the fuel pump relay... had the same problem... 94 sonoma .. it's the one up under the dash... cost me 400.... i didnt know where the darn thing was!!! chaeck all the normal stuff first...

Posted on May 20, 2009

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SOURCE: 2004 jeep grand cherokee idling problem. Revs motor 200 to 500 rpms higher while driving.

I had the exact same problem on my 04 GC. I put some Techron Concentrate Plus Fuel System Cleaner in from Wal-Mart and it seemed to fix the problems right away. Let me know.

Posted on Jun 01, 2009

  • 21 Answers

SOURCE: High RPMs

yes its related to knock sensor because car is running rich in fuel, and car runs of on safe mode, so overdrive will be off. have you and a friend replace it. remove intake assembly, then intake manifold, but first remove your anifreeze from radiator, trust me you want to remove antifreeze! their are brackets by the fire wall to hold down the manifold, thats the hard part is taking it off and putting that on since not to much space to work on it. on the block you'll see the two knock sensors, has 2 wires each, knock sensors cost between 150- 200 a piece, still cheaper than dealership putting it on. also buy some liquid gasket because you will need that. after putting it all back together reset the ecu and you should be fine,

Posted on Jul 14, 2009

  • 70 Answers

SOURCE: the engine knocks at higher rpm, only at high rpms

First no matter what check the oil level and then if it's a high rev tapping you need to allow the oil to flow through the engine block to try to coat and settle your valves.

But if it's really " knocking " sounds like your lifters and rocker arms are allowing your piston rods to clatter and that needs to be looked into fast.

Posted on Jul 27, 2009

  • 123 Answers

SOURCE: 2000 corolla sluggish when accelerating, fine at higher RPMs

Try changing out your distributer cap and rotor button. Let me know if that solves your problem.


Thx

Posted on Aug 01, 2009

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