Question about Cars & Trucks
I have a89 ford ranger with 2.9 v6 ..manual trans ..started out would only have problem once it got hot change head temp sensor didn't fix it.. now it will do it almost right away will idle fine but soon as you try to give more throttle like to pull out it will almost stall out.. pulled cat off thought it was clogged but still does same thing .with cat off thinking about replacing o2 sensor next ..any suggestions?
Any codes? fuel filter? or pump - think I would do a fuel pressure test on it first, then I would also towards the e g r valve, but would look at fuel first
Posted on Apr 20, 2014
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Posted on Jan 02, 2017
Ther is a air Idle control valve located on the side of the throttle body. unplug it remove it spray it and clean it with carb cleaner replace it plug it back in and you will be a Happy person again.
Posted on Feb 01, 2009
from what i am finding the code means o2 sensors. they recommend replacing them and if this does not work than replacing the cat converter
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.
A code P0420 may mean that one or more of the following has happened:
Some suggested steps for troubleshooting a P0420 code include:
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Posted on Aug 20, 2009
Very common problem is about a dime size hole wearing in the rubber elbow on the PCV valve located on the driver side rear of the intake manifold.
Posted on Oct 13, 2009
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