Post by
dmtaurus »
https://forums.nicoclub.com/dmtaurus-u295302.html
Wed Sep 01, 2021 7:25 pm
Some of what I discovered tonight is now making some sense.
First, from what I could see the rear end was factory installed and never changed out. But now, after seeing what ABS sensor style is in the rear end, I am certain that at some point in the past the rear axle was changed out. Why? I don't have a clue, given this truck is in good condition and is unmolested.
Second, the axle ratio seems to be more like its for an auto trans equipped truck, not a manual trans truck. Spinning the rear wheels and counting the revolutions on the pinion, and doing a search for what ratios came in auto trans trucks, I think the ratio is about 3.71 to 1. Maybe that explains why the cruise control is messed up; the ABS wheel signal counts and the engine speed sensor info that is sent to the ECU is causing errors and not making sense to the ECU when shifted into 5th. Sounds plausible.
What I want to now know is if I tell the dealer the VIN can they tell me what rear axle ratio came with the truck. I tried to pin this down on the Nissan parts site but it doesn't tell me the specs.
I changed the bad ABS sensor in the rear (auto trans equipped truck style) and the ABS light went out on the gauge cluster.