Question about 1999 Chevrolet Camaro

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Switched out the ecm in a 1999 V-6 Camaro with a used one. Now the speedmeter goes much higher than actual speed of the car. Idle is very high. Can't drive on highway at all. What's the

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  • Rene Xaviere
    Rene Xaviere Nov 07, 2012

    Actually my true problem is that I have entangled myself with the biggest bunch of morons to ever work in a machine shop. Today I finally good fed up w/ the constant lies, excuses, and ********. After the manager at Blumenthal's told me that if I could find an ecm before Thursday, which is allegedly when the one he ordered will arrive, then he would buy the one I found and have it put on my car. I found one at a Camaro salvage yardand took it to Blumenthal's to have it swapped out w/ th old one. As soon as I started driving away I felt like something was interfering with accelaration. I've had people say that the ecm should have been reflashed, if that is true then why didn't Blumenthal'srealize

  • Rene Xaviere
    Rene Xaviere Nov 07, 2012

    that maybe they should have it reflashed?

  • Anonymous Mar 31, 2014

    tahoe just quites why on the highway. loose all power

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  • Chevrolet Master
  • 2,101 Answers

What was the problem you had at first and it sounds like that shop knows nothing https://www.facebook.com/TedsRepairs email me there ted

Posted on Nov 07, 2012

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Posted on Jan 02, 2017

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SOURCE: Aveo 1.5 L engine, RPM is high and reaches 2500 at idle speed

you may try to isolate the TPS and IDLE and MAP inputs from the fuse box make a direct connection from control ouput to the fuse box this operation will require a professional technical
you may feed me back if it works

Posted on Apr 11, 2009

Molson02536
  • 3854 Answers

SOURCE: 92 CAMARO Z28 5.7 TPI CRANKS IDLES, GOES DEAD

Have you tried to pull any DTC codes. Here is a link for you so you can pull some codes, but you may have a bad Ignition Control Module (ICM) it's around $40.00 at Auto Zone and they can give you the step by step instruction to replacing it with common tools. The ICM is common to go bad after a few years due to time and corrosion. It's location is under the rotor in the distributor, as it heats up if fails or any changes in the engine speed. Check the wires to make sure there are no damages. Keep me posted be glad the help. http://www.troublecodes.net/GM/

Posted on Jun 26, 2009

  • 55 Answers

SOURCE: '98 S10 4 cyl. 5 speed: Sudden high idle, now surges.

Go to your local shucks or auto zone and they can check any codes behind your check engine light and it's free. It sounds like one of two things a O2 sensor or your mass airflow sensor but they will tell you for sure

Posted on Oct 02, 2009

  • 1 Answer

SOURCE: 01 camaro drive by wire reduced engine speed

hi novaman i was wondering if you maybe fixed your problem because i am having the same problem on my 99 camaro and canmt figure it any suggestions?

Posted on Aug 29, 2010

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