Yesterday it did not work at all to read live data. Tonight I got all the data I need. Strange. Well at least my new to me montero is not overheating. The Guage is just haywire.
I bought my 1995 ls Montero with 138k on it for $2300. He was asking 2600 but the speedo did not work. Also the heater barely worked too. After a severe flush to get the antifreeze scrap out. Looked like dex cool and regular antifreeze were mixed. The speedo gear in the transfer case was toast...