89 Ford 7.3 IDI Engine light.
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89 Ford 7.3 IDI Engine light.
Hello friends:
I recently picked up a '89 F-450 Super Duty with a 7.3 IDI to use as my company truck. All in all its a very sound truck, starts easily, runs well, No excessive smoke, good oil pressure, etc.. There is one issue I noticed on the ride home that has sorta concerned me. There is an 'Engine' light on the bottom left of the dash that comes on from time to time when you are driving it. When I got home that night, I was looking in the owners manual, and it said that the Engine light tells you when either the truck is low on oil pressure or, if its overheating.... Well the oil pressure stayed good on the ride home, and temp stayed in a good range. Any ideas on this? Could this be a ground somewhere causing this light to come on? Thanks.
I recently picked up a '89 F-450 Super Duty with a 7.3 IDI to use as my company truck. All in all its a very sound truck, starts easily, runs well, No excessive smoke, good oil pressure, etc.. There is one issue I noticed on the ride home that has sorta concerned me. There is an 'Engine' light on the bottom left of the dash that comes on from time to time when you are driving it. When I got home that night, I was looking in the owners manual, and it said that the Engine light tells you when either the truck is low on oil pressure or, if its overheating.... Well the oil pressure stayed good on the ride home, and temp stayed in a good range. Any ideas on this? Could this be a ground somewhere causing this light to come on? Thanks.
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Joined: Feb 2004
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not sure about the oil presure, but there is a seperate sensor (switch) that will turn that light on when the coolant is over-temp (think of an idiot light)
possible there is an intermittant shorting of that circuit. I would also consider the temp gauge may be wrong too. Some one here should know the details better than me though.
possible there is an intermittant shorting of that circuit. I would also consider the temp gauge may be wrong too. Some one here should know the details better than me though.
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Joined: Apr 2008
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Guys, don't you think that if his truck was actually overheating he'd notice it? lol
I bet the wire for the temperature switch that triggers the light is loose and just hanging in there, and every once in a while it touches the engine block or head or an accessory bracket and grounds and triggers the light. The temp switch is on the driver-side head near the exhaust manifold IIRC.
I bet the wire for the temperature switch that triggers the light is loose and just hanging in there, and every once in a while it touches the engine block or head or an accessory bracket and grounds and triggers the light. The temp switch is on the driver-side head near the exhaust manifold IIRC.
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