Question about Chevrolet Cavalier
4.3 v-6hesitates on take off espesally when low on fuel. no power will not rev up past 2500 rpm
It can not be adjusted i would check the catalytic converter sounds like it may have had a melt down causing it to get clogged which would make it loose power.
Posted on Feb 25, 2012
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Posted on Jan 02, 2017
Most Japanese manufacturers protect their engines from over-rev by programming the ECU to limit rpms when vehicle speed is zero. 2500 rpms seems low. Usually it is in the 3500-4000 rpm range. Is this car new to you or have you had it a while and this is a new observation?
Posted on Feb 28, 2009
This is a classic symptom of a bad mass airflow sensor. Nissan designed this as a protective feature on the car. If the mass air sensor goes bad, the computer limits the car to a 2400RPM rev limit to prevent damage.
The sensor is under the center nose panel between the headlights. Take that off and on the back of the airbox (which fills this space) you'll see a pipe coming out that meets at a "T" with another hose going across and down under the headlights. That pipe off the back of the airbox is the mass air sensor (it has a harness plugged in).
Posted on Mar 27, 2009
It can be done but it is very time consuming.
I use an 87 Astro van intake sensors and computer on my 86 OMC.
After six years I am still playing with it.
Runs good and easy on gas.
Got lots of info from DIY-EFI.
You HAVE to change programing in the computer.
I am running a closed loop system with one oxygen sensor in the starboard manifold.
Your 94 computer is not as good for a boat because it also controls the transmission.
Just to give you an idea what your in for.
Posted on May 03, 2009
SOURCE: 1993 toyota 4x4 idle problem
sounds like your throttle positioning sensor is not set right so i would undo the two phillips heads that hold it and turn it till the idle doesnt fluctuate should be turned most of the way to the front of the truck. Also check your idle screw that throttle body could be set different.
Posted on Sep 23, 2009
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