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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 10-01-2006
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Oil

I recently had my oil changed. it was a week ago and i have sence noticed that sometimes when i put on the brakes my truck starts to shake..and the oil gauge starts bouncing up and down really fast..any ideas why?
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Old 10-01-2006
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First of all: go pull your engine dipstick RIGHT NOW and make sure that the oil level is correct. If it is wrong, don't drive it until you correct the problem.

If the oil level is OK, then it could be something unrelated to the oil change. The shaking and the jumpy oil pressure gauge are often signs that your idle is too low (roughly 300~400 RPM). At such a low RPM, oil pressure may drop low enough to go below the threshold of the oil pressure sending switch, causing the gauge to drop to zero. With the engine stumbling along at an erratic low idle, it may make the OP gauge jump back and forth between zero and midscale.

Idle speed is controlled by the Idle Air Controller and they sometimes stick. Try a search on "IAC" for more threads about this.
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Old 10-01-2006
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ok thanks man
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Old 10-01-2006
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I have the same problem with my oil guage jumping up and down.
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Old 10-01-2006
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Quote:
Originally Posted by feh728
I have the same problem with my oil guage jumping up and down.
thats prob a issue with your sending unit
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Old 10-11-2006
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Mine did that for the longest... went to autozone got a oil pressure sending unit was like 6 bucks.. Its on the passenger side of the motor.. screws into the block close to the exaust manifold. Quick fix.. hasnt done it since.
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