EU installed, have some questions.
#1
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EU installed, have some questions.
I have been on break for the past 2 weeks, so I have been busy with installing "upgrades" on the max. I installed Cattman headers (sound awesome) and EU.
I finally got around to playing with the logger and I did some WOT runs and after examining them I noticed that according to the logger, my water temp never rises above 150F. I'm wondering how accurate this is?
The gauge on the dash always makes it up to the "dot" on the temp gauge.
Next, after installing I noticed I have a rather funny idle. It seems loopy in a way. It only does this after it has been idling a few minutes. Almost seems like it is dumping extra fuel in the cylinders. I should mention I also got a 1302 MAP cel after the install. I checked the wiring and everything looks ok.
I'm also working with Dandy on this, but I wanted to see if anybody had other input on this.
I finally got around to playing with the logger and I did some WOT runs and after examining them I noticed that according to the logger, my water temp never rises above 150F. I'm wondering how accurate this is?
The gauge on the dash always makes it up to the "dot" on the temp gauge.
Next, after installing I noticed I have a rather funny idle. It seems loopy in a way. It only does this after it has been idling a few minutes. Almost seems like it is dumping extra fuel in the cylinders. I should mention I also got a 1302 MAP cel after the install. I checked the wiring and everything looks ok.
I'm also working with Dandy on this, but I wanted to see if anybody had other input on this.
#2
My ECT hovers @ 190-200*F typically. T-stat opens @ ~180*F. That definitely seems low. In fact so low that the car probably would, theoretically, never make it to 'normal operating temp' (160*F+ IIRC). Therefor the ECU will run rich in order to heat the car up faster. (Closed loop)
#3
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Originally Posted by NmexMAX
My ECT hovers @ 190-200*F typically. T-stat opens @ ~180*F. That definitely seems low. In fact so low that the car probably would, theoretically, never make it to 'normal operating temp' (160*F+ IIRC).
#4
Check the FSM where it has a voltage curve with respect to ECT (0-5v, where the higher the voltage the lower the value [ECT temp] and vice versa).
And then perhaps check the raw data values the EU is seeing from the ECU. Ultimately, seems like some type of wiring gremlin is after you.
And then perhaps check the raw data values the EU is seeing from the ECU. Ultimately, seems like some type of wiring gremlin is after you.
#5
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Originally Posted by NmexMAX
wiring gremlin
#7
Probably need to set JP13 to open. Nissan seems to have used 2 different types of water temp sensors. Now that I've got a DEK swapped in I've also had to switch the jumper. Before I used to have it set at 1-2 on the DE.
#8
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Originally Posted by DandyMax
Probably need to set JP13 to open. Nissan seems to have used 2 different types of water temp sensors. Now that I've got a DEK swapped in I've also had to switch the jumper. Before I used to have it set at 1-2 on the DE.
I'll be changing the jumper today.
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