94 ranger 4 cly cuts out under load
#1
94 ranger 4 cly cuts out under load
Hey everyone. Newbie here. I recently bought a 94 ranger and found that if I step on it hard for a while, eventually it completly cuts out. If I let off the gas, it fires itself right back up but after that, it takes less throttle to make it happen again. The check engine light does not come on though. I'm going to try to get any codes that might be stored that don't light the cel this weekend but if anyone has any experience with this issue, I would appreciate the shortcut. Thanks.
#3
#6
I had lots of things go wrong all at once at my house so I haven't had time to work on it since posting this thread. I am trying to find my fuel pressure gage so I can do some diagnosing before I go out and buy parts. The fuel pump was replace maybe 25,000 miles ago and the fuel filter looks like it was replaced at the same time so I'd like to see if I can duplicate the problem with a pressure gage attached. I might take the hood off and drive it hard to see what happens to the gage reading when it cuts out. Kinda like I do with a vacuum gage. I will update when I learn anything.
Any ideas out there would be greatly appreciated.
Any ideas out there would be greatly appreciated.
#7
I had lots of things go wrong all at once at my house so I haven't had time to work on it since posting this thread. I am trying to find my fuel pressure gage so I can do some diagnosing before I go out and buy parts. The fuel pump was replace maybe 25,000 miles ago and the fuel filter looks like it was replaced at the same time so I'd like to see if I can duplicate the problem with a pressure gage attached. I might take the hood off and drive it hard to see what happens to the gage reading when it cuts out. Kinda like I do with a vacuum gage. I will update when I learn anything.
Any ideas out there would be greatly appreciated.
Any ideas out there would be greatly appreciated.
#8
Here is a way to pull the codes yourself for 94 and older OBD
http://www.troublecodes.net/Ford/
Does it cut out as bad with the engine cold ,or is it mainly after things are warmed up ?
It almost sounds as if the ignition coil is breaking down after it gets hot.
http://www.troublecodes.net/Ford/
Does it cut out as bad with the engine cold ,or is it mainly after things are warmed up ?
It almost sounds as if the ignition coil is breaking down after it gets hot.
#9
I haven't tried punching it when cold so I don't know. I would think that the coil would misbehave at low, medium or high power settings. This only seems to happen at high power settings. Its hard to get it to happen but after it happens once, it seems to happen a lot easier the next time. When it cuts out, it cuts out completely for a second or so and then spits back to life. I am wondering if it could be a dirty MAF sensor. After high power on an old engine, maybe there is enough blow-by to temporarily coat whatever sensors are in the airstream going into the intake manifold. I'll try to clean things up tomorrow.
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