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- Aug 10, 2007
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I have a 90 ranger with a 2.9 out of an 88. The motor will sit and idle smooth once warm, but as soon as you touch the gas, the motor shakes. Now if you go ahead and give it a lot of gas, it smoothes out, say after 2k rpms. But below that it never does it. I have put new grounds on it, pulled codes to find none, and swapped every sensor off another truck. Still, shakes at low rpms. Does it while sitting still so i know it is not driveline. Could this be a fuel related problem such as an injector, it used to do it really bad and a guy try to clean the rail and injectors and it helped. Or has anyone had lower intake gaskets go bad, i have checked all lines and sprayed but it seems like the valve covers keep me from spraying the sides. Any suggestions guys, i would love to get the truck running right, it is a low mileage 2.9 that doesnt tick. Also, i have checked timing and changed harmonic balancer.
