Checking 4l60e line pressures

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Nov 30, 2021 | 11:46 AM

Mark Vincent

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Joined: Dec 2020

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Checking 4l60e line pressures

Hello folks, I have a question about checking line pressure. Can I put my truck on jack stands to check the line pressure in all gears? This is a new build, and I have no tags, or insurance so I can't go driving down the road. My luck someone would plow into me.
Thanks,
Mark

Nov 30, 2021 | 01:31 PM

tayto

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Joined: Jan 2013

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i check pressures with vehicle on the ground. if those look good then go on a road test and check pressures.

Dec 1, 2021 | 11:55 PM

dixiebandit69

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Joined: Mar 2012

Posts: 858

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From: Texas

Yeah, if the vehicle isn't fully loaded, you will not get accurate line pressure readings.
The MAF and TPS sensor input is really important for line pressure, and the engine will not be sucking as much air with the wheels unloaded.

I'm sure you could probably get in the ball-park that way, but I'd check it with the wheels chocked, standing on the brakes, and rev it in Drive.
Or just drive it.

Dec 2, 2021 | 01:03 AM

vorteciroc

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Joined: Jun 2008

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From: Nitro Alley

As already stated, NO tires in the air.

Take pressure-readings in all Gear-Selector Positions...
Both at an Idle, and at 1,200 RPM to 1,500 RPM.

Idealy, also monitor the Pressure while Driving and Shifting.
Obtain a LOOOONG Hose, and tape the Gauge to the outside of the Windshield.