Engine Hesistation
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New User
Joined: Mar 2004
Posts: 1
Likes: 0
From: 132 S. 300 W. apt # 7
Engine Hesistation
I have a 1987 Ford Ranger 4x4. I only have a problem when the engine warms up after about 15 minutes of driving. I will be going smoothly down the highway, and then the engine will hestiate untill I press the gas pedal all the way down. Then it will kick in, and I can release the pressure from the gas pedal untill it is in its original position. After about 10 seconds, I have to go through the same process. I have replaced the plugs and the air filter. The cables and distrubutor are new. The engine has been replaced since I bought the truck. I believe that the engine came from a Bronco 2. Any tips on what I could do would be awesome.
Post Fiend
Joined: Dec 2001
Posts: 10,562
Likes: 4
From: South Jersey
When you go WOT it goes into open loop, disregarding the sensors. Pull the codes even if you don't have a CEL. Also test fuel pressure and check the fuel pressure regulator's vacuum line for gas.
