Tip & How-To about Chevrolet 1500

Truck will not start 350 CID Engine, Chevy GM

Many of GM pickups that have 70,000 miles on the engine will not start due to low oil pressure or a bad low oil pressure switch. So before having a truck or car hauled off to the shop check your oil level. No need to pay $65.00 for shop charge plus the tow and one quart of oil. The location of the oil-sending unit is on the back of the block between the fire wall and motor. It has a three-wire connector. Buy a pressure switch so you can see what size wretch you will need to get it off with.
An easy way to know for sure is turn the key to the run position, do you here the fuel pump run? No? Then it is most likely the switch. .

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2001 Chevy Silverado c1500 pickup has very low oil pressure, what do I need to look at?

Do not drive the truck until the issue is resolved.

1. Make sure the oil is at the proper level in the engine with the correct spec oil for the pickup. Oh it is normal for the oil pressure to be a little low at idle and go up to the normal range as the engine rpm goes up to normal operating range.

2. It could be either a real problem or a problem with the oil pressure indicator. To verify which connect a mechanical test pressure gauge of the proper range say a 0-100 psig scale to the point where the oil pressure sensor is connected. After it is connected test run the engine for a short period. If the pressure shows normal replace the oil pressure sensor. If the gauge confirms the low oil pressure then you have a serious issue in the engine. It could be:

1. Bad oil pump or oil pressure relief valve

2. excessive clearance in the bearings due to high miles.

Nov 17, 2014 | 2001 Chevrolet Silverado 1500

1 Answer

I have a 2006 Impala 118844 miles. engine power reduced light oil pressure low shut engine down starting disabled service throttle I have oil leak oil is full though.. Car drove this morning then shut off and those were the warnings. Whats the problem. Is this coming from the oil leak.Although my oil is full

Your fuel pump power is controlled through the oil pressure switch, and if it is showing low pressure due to a leaking/defective oil pressure switch, it may shut off the fuel pump. Oil pressure switch failures are a common source for oil leaks. There could, and probably are, other issues going on. You never mentioned if the "check engine" light was on, and if it is, a scan would definitely be in order to determine the true cause of your problem
If it is not on, GM fuel pump failures are very common, as well as the vehicle security system my be having a programming issue. I would start by having the engine scanned (most Autozone locations do this for no charge) Good luck!

Nov 08, 2014 | Cars & Trucks

1 Answer

1998 ford explorer oil pressure

Knocking in engine and low oil pressure usually means bad main bearings. May have been caused by bad oil pump or just worn out bearings due to high mileage. If this is problem needs engine or rebuild old engine.

Jul 15, 2012 | 1998 Ford Explorer

2 Answers

what does a low oil pressure alarm mean

It means the sensor that detects your oil pressure has seen a situation where the oil pressure is too low and engine damage will result. Could be just a bad sensor, but better have it checked with a mechanical gauge to see exactly what the pressure is.

Jan 10, 2010 | 2001 Pontiac Montana

1 Answer

1995 Jaguar XJ6 oil pressure gauge

This is OK. Oil pressure is always higher when the engine is cold.

As an engine accumulates miles the pressure will start to drop due to bearing clearances increasing.

If this just started to happen you may want to replace the oil filter and or oil pressure sending unit.

Sep 22, 2009 | 1995 Jaguar XJ6

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