EVIC trickery!!

[kjweston]

Got a very nice one no scratches at all shipped to my door for $19.99..

With Instant mpg and no sunroof switches. exactly what i was looking for..

now i have a question..

when i was testing it, it was reading " W 75 degrees" but then when i completely finished the whole install and drove it around it now says "W open circuit"

Did it trick me into thinking I already had the temp sensor installed?
and I really don't and that's whats causing the "open circuit"??

I got all excited when i saw the 75 degrees.
oh and instant mpg accelerating through 3k rpm was 4 yippee!!

 

[ThunderbirdJunkie]

Isn't the OTIS the only one that has instant MPG?

 

[kb0nly]

Nope. My EVIC has instant MPG also... Just has to be an 03' or earlier model EVIC for that.

kjweston... what model year is your KJ??

If it says open circuit then i'm guess you have an 02-03 model year since 04 and later came with the sensor. Go around front and look for it, drivers side top, a few slots over from the end of the grill.

Ohh and mine showed a temp too when i powered it on the workbench, then after leaving it powered on for a while it showed -- for the temp and then it said NO BUS... So it was probably showing you the last temp saved in memory before it was removed from the previous vehicle.

 

[Ry' N Jen]

Did all KJ's come with a outside temperature sending unit?
Or is ours just "Special"?

 

[Marlon_JB2]

My '04 came with the temperature sensor. But since it was programmed differently, the temperature on the EVIC I used (can't remember what year) didn't work. However I did have Instant MPG.

 

[kb0nly]

02-03 didn't come with them unless they had an OTIS or EVIC. 04-07 came with them stock because the temp sensor is used by the PCM for engine functions.

 

[kb0nly]

My '04 came with the temperature sensor. But since it was programmed differently, the temperature on the EVIC I used (can't remember what year) didn't work. However I did have Instant MPG.

Sounds like you have an 03' or earlier EVIC then since you have Instant MPG.

04' is the dividing line... Starting with the 04' model year they changed the address of the temp sensor in the PCM, so 04' and later EVIC and OTIS modules were programmed to look to the new data location for that info. Take one from an earlier year and you just get -- for the temp.

 

[Marlon_JB2]

Right. I knew that much, just can't remember which year EVIC I actually had. It came from a Grand Cherokee though, that much I do remember.

 

[kjweston]

oh and also. the direction thing has gotta be messed up. it will read one direction even after making a complete 90 degree turn. even 180.. do i need to calibrate it or something?

 

[kb0nly]

oh and also. the direction thing has gotta be messed up. it will read one direction even after making a complete 90 degree turn. even 180.. do i need to calibrate it or something?

Yep, you need to do the calibration, find a big empty parking lot so you can make nice big slow circles, you dont need to do donuts with it... LMAO

 

[kjweston]

Yep, you need to do the calibration, find a big empty parking lot so you can make nice big slow circles, you dont need to do donuts with it... LMAO

so just go somewhere and drive in circles? that's all?

 

[Marlon_JB2]

so just go somewhere and drive in circles? that's all?

Yip. Slow circles. Mine was calibrated in about 2 circles.

 

[ThunderbirdJunkie]

So you can't whip donuts while doing it?

 

[Marlon_JB2]

So you can't whip donuts while doing it?

Try it, see what happens. Do let us know. \\/

 

[kb0nly]

While fun... Donuts won't work... LMAO... You need slow steady changes after putting it in the calibrate mode.

Oh and also make sure your variance number is set for your location, look in your users manual for the map showing the variance numbers. If you don't have that let us know and we can look it up. It does make a difference...

 

[kjweston]

i didn't calibrate it but I've been driving around with it and now it seems to work but it doesn't cay CAL next to it like I've noticed on some of them.. does that just mean its in calibrate mode?

 

[Marlon_JB2]

You need to be in CAL mode for it to calibrate. Also, be sure to set the correct region.