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  #1  
Old 08-21-2011, 11:11 PM
spankyfarly spankyfarly is offline
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Default oil pressure

I have a 94 ram 2500 with the 5.9l 360. On the highway I noticed my oil pressure gauge showed almost 0psi. Every time I let off of the gas pedal it would go back to 40. As soon as I accelerate it goes back to around 0 again. I pulled over and at idle its at 40 again.
Oil level was good I checked it before my trip.
I didn't notice any strange knocking or pinging.
After getting back on the highway it did the same thing it seams like the higher the gear I was in the lower the pressure gauge read. After about 15 minutes or so it went back up to 40 and stayed there for the rest of the trip. The next day for the return trip it did every thing it did the day before.
Any Ideas what this could be.
Thanks
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Old 08-22-2011, 01:49 PM
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ramvan2500 ramvan2500 is offline
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Originally Posted by spankyfarly View Post
I have a 94 ram 2500 with the 5.9l 360. On the highway I noticed my oil pressure gauge showed almost 0psi. Every time I let off of the gas pedal it would go back to 40. As soon as I accelerate it goes back to around 0 again. I pulled over and at idle its at 40 again.
Oil level was good I checked it before my trip.
I didn't notice any strange knocking or pinging.
After getting back on the highway it did the same thing it seams like the higher the gear I was in the lower the pressure gauge read. After about 15 minutes or so it went back up to 40 and stayed there for the rest of the trip. The next day for the return trip it did every thing it did the day before.
Any Ideas what this could be.
Thanks
Well could be many things, it could be a faulty sending unit which is likely because it's an electronic sensor and well a vehicle that old... It could also be the pump it self or the release valve is broken in the pump but I doubt this. Another thing it could be is sludge formation at the bottom of the oil pan, sometimes sludge forms where the pump screen is and when this occurs you get readings much like yours lol had a friend same thing it was sludge because of a coolant leak, but sludge forms over time with or without water depends how often you change your oil and maintain the engine.
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Old 08-22-2011, 04:37 PM
Maddevill Maddevill is offline
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Whatever it is you may want to plumb in a real pressure gauge to the oil galley and make sure you're getting pressure. Otherwise you're gonna fry that motor.
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Old 08-23-2011, 04:47 AM
spankyfarly spankyfarly is offline
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Default

Thanks for the replies. I plan on checking the oil pressure with another gauge.
I only have had the truck for about a month now, and this is the first Dodge I ever owned. It only has 82000 miles on it.
From reading on the forum here I noticed there is a problem with the plenum gasket on these,Could this be a symptom of that?
I haven't had the truck long enough yet to see if it consumes more oil then it should, I will have to wait and see.
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Old 08-23-2011, 09:13 AM
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Thanks for the replies.
Hi and a warm Carolina welcome to the best RAM ForumZ on the web. I'm not the first and won't be the last to ask ~ How about posting a few photos of your truck? I'm here to help you navigate the site; so how about dropping by the Newbie Checkin and introducing yourself.
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Old 08-23-2011, 02:00 PM
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ramvan2500 ramvan2500 is offline
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Originally Posted by spankyfarly View Post
Thanks for the replies. I plan on checking the oil pressure with another gauge.
I only have had the truck for about a month now, and this is the first Dodge I ever owned. It only has 82000 miles on it.
From reading on the forum here I noticed there is a problem with the plenum gasket on these,Could this be a symptom of that?
I haven't had the truck long enough yet to see if it consumes more oil then it should, I will have to wait and see.
Well if the plenum is leaking then you would have a odd idle mostly high idle surging etc... To check if the plenum is leaking just open the throttle plates and look for any oil. Do this with the engine off incase of a back fire.
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