2004 4x4 Blazer 4.3 oil pressure
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2004 4x4 Blazer 4.3 oil pressure
I have a 2004 blazer oil pressure goes to Zero when I come to a stop, it only goes up to about 15 when driving if that. Sending unit changes, cluster changed, pressure checked at sending unit location, shop said pressure was good. Truck was staying between 5 and 20 at all times which was a problem. Recently started going to zero at idle and the check gauge light comes on at every stop when the oil gauge goes down to zero. What should I do next?
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Joined: Nov 2017
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From: Poland
I have a 2004 blazer oil pressure goes to Zero when I come to a stop, it only goes up to about 15 when driving if that. Sending unit changes, cluster changed, pressure checked at sending unit location, shop said pressure was good. Truck was staying between 5 and 20 at all times which was a problem. Recently started going to zero at idle and the check gauge light comes on at every stop when the oil gauge goes down to zero. What should I do next?
I would try to hook up a pressure gauge to a transmitter socket. Transmitter location sucks, but I don't see any other option. Maybe somebody else is going to give have a better idea...?
Did shop gave You a test results for an oil pressure? How did they took a measure?
Now, if the pressure is really low there are two options:
- either the oil pump got busted (oil pump is located into an oil pan, no ez access)
- or the engine is worn off
Did You notice what was the oil pressure prior that happened? Was it ok? If so, then I bet the pump.
Nevertheless, DO NOT ATTEMPT DRIVING W/O HAVING IT SORTED OUT, YOU MAY EASILY KILL YOUR ENGINE.
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From: North Central Indiana
I have a 2004 blazer oil pressure goes to Zero when I come to a stop, it only goes up to about 15 when driving if that. Sending unit changes, cluster changed, pressure checked at sending unit location, shop said pressure was good. Truck was staying between 5 and 20 at all times which was a problem. Recently started going to zero at idle and the check gauge light comes on at every stop when the oil gauge goes down to zero. What should I do next?
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Joined: Sep 2010
Posts: 329
Let’s not not forget here about the spring for the pressure relief valve going bad. That would definitely explain a low oil pressure issue, as well as the other two issues mentioned above. I do not remember the specifics on this, however I do remember someone having an issue with this sometime ago...
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