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1997 acura cl 2.2 revs up to 1500 rpm and down to 1000 rpm just several seconds after start

Revs up to 1500 rpm and down to 1000 rpm after starting what causes this?

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Cars are design to run at a higher idle at start up to warm them up quick. There is a sensor that reads water temperature and tells your car's computer how fast to idle. Your RPMs seem slightly high but not out of the norm. Does idle ever drop to around 600/800 after about a minute? If not, your engine temperature sensor maybe defective.

Posted on Mar 16, 2014

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Posted on Jan 02, 2017

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tony chavous

tony chavous

  • 50 Answers

SOURCE: Find oil filter in engine of acura CL

back side of block under intake if its a 2.2 or a 2.3 if its a 3.0 its on the passenger side of engine bay if you turn the wheel you will be looking at it

Posted on Feb 03, 2009

c17hydro

Greg Bernett

  • 2989 Answers

SOURCE: how to locate the thermostat for a 1997 acura 2.2

Removal & Installation

  1. Disconnect the negative battery cable.
  2. Drain the cooling system into a suitable container.
  3. Locate the thermostat housing by following the upper radiator hose to the engine.
  4. Loosen the hose clamps then carefully detach the hose from the fitting.
If the hose is stuck, carefully use a pick to break the seal between the radiator hose and the housing. If the hose is deteriorated, replace it with a new one.
  1. Disconnect any sensors or switches that may interfere with the removal of the thermostat from the housing.
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Remove the thermostat housing bolts

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Pull the water outlet neck away from the housing

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Note the installed position of the thermostat, then remove it

  1. Unfasten the retainers, then remove the thermostat housing.
Some coolant may leak out of the housing as the seal is broken.
  1. Remove the thermostat carefully noting how it's installed.
  2. Clean the mating surfaces of the thermostat housing.
Many thermostat housing's are made out of aluminum alloy. A plastic scraper is very effective and will not harm such metals.
To install

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A new gasket must be installed before installation

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Install the thermostat with the air bleed valve at the top

  1. Install the new thermostat and gasket.
Install the thermostat with the jiggle pin facing up. This acts as an air bleed and must be at the top of the thermostat to operate properly.
  1. Install the thermostat housing, then tighten the bolts securely.
  2. Connect the radiator hose and tighten the hose clamps securely.
  3. Install any remaining components, then refill the cooling system.
  4. Start and run the engine until it reaches normal operating temperature while checking for leaks.

Posted on Nov 03, 2009

Testimonial: "thank you very much on the solution, didn't take as long as i expected!"

Anonymous

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SOURCE: 2002 Hyundai Elantra 100k miles - 2.0l - running rough

When I had this same problem...it was the Catalytic Converter...cost about 200 to get it fixed at the Hyundai Dearlership :)

Posted on Apr 01, 2010

toneman2121

toneman2121

  • 775 Answers

SOURCE: RPM run high and slow to drop down

a vacuum leak will cause a high idle due to he fact more air is entering the engine which the computer will compensate by adding more fuel. also, a faulty fuel pressure regulator will increase fuel pressure delivering more fuel than required.

look for broken or detatched vacuum hoses. check fuel pressure; 30-50psi

Posted on Apr 09, 2010

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I have a 97 ACURA cl 2.2 and when I start my engine it the rpm idles to 1. Why is that?


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