Dyno questions
02-22-2019, 08:39 PM
#1
JK Newbie
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Dyno questions
I went to dyno my Jeep today and it would not go out of 2nd gear. Got some codes that had to do with speed sensors. I cleared the codes and they came right back. I do have Tereflex full float kits front and rear. Not sure what the deal was. I got to run it through 2nd and got 275 HP. I need to figure this out. I just got a Sprintex supercharger and I am going to put it on this week. I wanted to get some before and after readings. Thanks
02-23-2019, 06:16 AM
#3
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Did you have it in 4wd? I was troubleshooting codes a while back and jacked the back end up and chocked the front (towards an open field). I put it in gear, then 2nd gear and let it roll the tires over freely. Codes popped up and the ABS wasn't happy about the rear two tires moving and the front two being stationary. Could this be your issue as well??
02-23-2019, 09:19 PM
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JK Newbie
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No idea. I tried with traction control off, no go. We tried all kinds of stuff. I dont get it. Ive watched all kinds of dyno videos and it doesn't seem like they do anything special.
02-24-2019, 06:34 AM
#5
JK Junkie
Originally Posted by CJCCJ4 JK
No idea. I tried with traction control off, no go. We tried all kinds of stuff. I dont get it. Ive watched all kinds of dyno videos and it doesn't seem like they do anything special.
https://www.autoevolution.com/news/h...-jk-73484.html
Last edited by rob_engineer; 02-24-2019 at 06:37 AM.
02-25-2019, 12:54 PM
#7
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I'm thinking these folks are on the right path with the traction control. What year is your vehicle? I think the 2012+ are more sophisticated on measuring wheel speed... if you're on a dyno and only the rear wheels are turning, the vehicle might not like that the front wheels are reporting zero for speed??? TOTALLY a guess, but plausible.