Question about Ford Ranger
You can remove the serpantine belt and spin the altenator, idlers, ect. by hand to find the cause of the squeek. Without the belt in place, the faulty part may sound dry and metalic and have play in the bearing. Also with the belt removed, you can restart the engine for less than 30 seconds to see if the squeek is gone, to be certain the sound is coming from the drive belt area. How long has the truck been running poorley? If during the last tune-up, #4 and #5 plug wires were swapped accidently....You could check compression on those two adjoining cylinders, to check for a blown head gasket between cylinders. Also inspect the spark plugs for color, gap or cracks in the porcelain.
Posted on Mar 15, 2011
I was going to go with the idler pulley as well, but the engine codes threw me off. Try this.
Ohm all the injectors any that are way out of line replace. I've used a small screwdriver with a light bulb in the handle slide the tip along side the wire and check for spark on all cylinders. I've also used an ohm meter and checked the wires it normally runs appx. 1/2 scale.
Take a compression test a bad lifter or valve can cause problems.
Use a can of carb. cleaner and spray along the edges of the intake manifold.
If the engine smooths out you have a leak at this point. Its always possible a gasket is pinched or you have a small crack.
Bad injector wires also cause misfires.
Posted on Mar 15, 2011
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Posted on Jan 02, 2017
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