Hey Folks, just back home to Denver from a great trip through Moab. Full write up to come, but unfortunately my 2011 GX460 is still on the trail. Everyone is ok and local law enforcement has been notified. I'm hoping that the community here could provide troubleshooting suggestions given the following situation:
Sunday afternoon I was driving slowly in 4low with center diff locked, up a steep incline approaching some stair steps. The engine skid hit the first stair, and the engine immediately shut off. Only noticeable damage is an oreo sized dent in the passenger side of the front slanted potion of the OE engine skid. There is nothing meaningful behind that point except metal support bars that tie back into the front diff mounts.
I attempted to restart the engine. The starter turned the engine over quickly and easily, but no sign of it catching. A "low oil pressure" warning message came up on the center dash. I could see no evidence of oil leaking anywhere. I should have checked the dipstick for actual oil level but forgot to given I didn't see or smell any leaks and was pretty stressed out. The oil was last changed 4k miles ago at a trusted Denver shop, Tru Automotive. I am not aware of the engine burning oil so I don't check it regularly but that is a small possibility. Truck has 90k miles and runs very well prior to this.
Based on web research and speaking to @Inukshuk and Dan Kunz of GXOR, we suspect the following possibilities:
1. Loose or damaged oil pressure sensor sending a false (or no) reading, causing the ecu to deny fueling. This sensor is located just above the fuel filter.
2. An impact related safety system cutting fuel.
3. Slightly low engine oil exacerbated by the incline and impact.
4. Damaged oil filter restricting flow.
5. Loose fuse
My goal is to return to the truck, get it running, and drive out. Aside from extra gas and tools, I am currently planning to bring the following:
1. Several quarts of oil
2. Scan tool that can read and clear codes for ecu and safety (SRS) computer
3. New oil pressure sensor
4. Spare fuses
Has anyone encountered this sort of issue before? Any recommendations for what to check or how to check it?
I am also looking for assistance to get back to the truck, ideally sometime this week or coming weekend March 25-26. I am happy to pay the right person for their time and assistance. Thanks!
Sunday afternoon I was driving slowly in 4low with center diff locked, up a steep incline approaching some stair steps. The engine skid hit the first stair, and the engine immediately shut off. Only noticeable damage is an oreo sized dent in the passenger side of the front slanted potion of the OE engine skid. There is nothing meaningful behind that point except metal support bars that tie back into the front diff mounts.
I attempted to restart the engine. The starter turned the engine over quickly and easily, but no sign of it catching. A "low oil pressure" warning message came up on the center dash. I could see no evidence of oil leaking anywhere. I should have checked the dipstick for actual oil level but forgot to given I didn't see or smell any leaks and was pretty stressed out. The oil was last changed 4k miles ago at a trusted Denver shop, Tru Automotive. I am not aware of the engine burning oil so I don't check it regularly but that is a small possibility. Truck has 90k miles and runs very well prior to this.
Based on web research and speaking to @Inukshuk and Dan Kunz of GXOR, we suspect the following possibilities:
1. Loose or damaged oil pressure sensor sending a false (or no) reading, causing the ecu to deny fueling. This sensor is located just above the fuel filter.
2. An impact related safety system cutting fuel.
3. Slightly low engine oil exacerbated by the incline and impact.
4. Damaged oil filter restricting flow.
5. Loose fuse
My goal is to return to the truck, get it running, and drive out. Aside from extra gas and tools, I am currently planning to bring the following:
1. Several quarts of oil
2. Scan tool that can read and clear codes for ecu and safety (SRS) computer
3. New oil pressure sensor
4. Spare fuses
Has anyone encountered this sort of issue before? Any recommendations for what to check or how to check it?
I am also looking for assistance to get back to the truck, ideally sometime this week or coming weekend March 25-26. I am happy to pay the right person for their time and assistance. Thanks!
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