Is this were the temp gauge is suposed to be?
- Thread starter Danroyd
- Start date
johnny gtir
Well-Known Member
Mate don't forget the age of these gauges. Only way to truly tell is fit or temparory fit a aftermarket one of good quality. There is a link of here for a diagnostic reader that a member produced sure it reads temps via Ecu. But fan do come in a fair way above half way on gauge and drop it back to half way so if yours is there with them on constant. Remind me have you comp pressure or sniff tested it ? Your water pump fully functioning ? Condition of rad ?
yip did a comp test today cranked it 3 times but forgot to hold thottle open idono if that makes much of a difference, and got around 150 on all 4 cylinders, oh the fans are only on all the time because i havnt got the new temp sensor yet so ive got a paper clip in the plug. the radiator is a new alloy one. waterpumps brand new and ive got no therostat in it at the moment.
yea idono what the oil temp is as the standard oil temp gauge isnt there anymore. oh do you do that through a diagnostic cable?
keastygtir
Well-Known Member
looks spot on to me, as a side note wasnt there a mod were you bridge the Aircon condenser wire and when you push the aircon switch the heater fans would run?
Ok cool i got this car in pieces and im trying to put back on the road so im not sure how everythings suposed to be lol, yea i did read somthing about the aircon turning on the fans , ive ordered a new water temp sensor it comes tomorow so il chuck that in and see how she goes then
Yes I have a consult connector (can't see any on ebay) which I have then connected to a serial/usb adaptor. I then use Nissan Data Scan to see the engine parameters: http://www.nissandatascan.com/
If you pull off the ECT connector the fans will run all the time as the ECU has no idea what temp the engine is at. Are you trying to stop the fans from running by bridging the connector?
Sorry i dont know what this means. If this was my car I would replace ect sensor, gauge sender and get a copy of nissan data scan so I can get an idea of what the ecu is seeing ( ect sensor). Data scan will also tell you if the ecu has asked for the fans to come on.
No real need for obd1 and datascan for the ect sensor check and ecu control check for fan
All that needed is DMM (multimeter) and the service manual data, you can read voltage value right at ecu input and see if seem realistic, you can pull the ect and test it with thermo probe and DMM, you can send variable voltages to ecu input via resistors to verify functions and fan switching circuit operation via monitor pin 9 earth's . No fancy tools and not much time or hassle .
Wes
Member
I replaced the gauge sensor on mine as I was having issues when on boost. When I boosted the temp would shoot down and only come back to 'normal' temp when cruising. Replaced sensor and now as soon as I turn car on from cold it reads a quarter of the way up the gauge. I used ecu talk to monitor the temp of the coolant and the fans kick in as normal at the temp they should but the gauge reads hot even though I have confirmed the coolant temp is within spec.
My way seems much easier!! Thermo probe?? Resistors voltages to ecu??
^ While obd1 and software super useful and something any serious R owners should get simple testing with a multimeter is still way go on stuff like this, If you know the circuit and sensor data you can conclude sensor accuracy/function, sensor feed voltage, integrity of signal to ecu, ecu fan relay switch ground circuit in like 15 minutes with a simple DMM multimeter, many of them come with thermo probe these days .
obd1 may show you sensor value wrong but you'll need dmm and service data diagnose it unless just part shooting it or guessing .
obd1 may show you sensor value wrong but you'll need dmm and service data diagnose it unless just part shooting it or guessing .
If this fella has a DMM with a probe.....
I'd have thought it cheaper just to replace both the sender and ECT sensor. There are inexpensive version of consult that will give you engine parameters.
I've had the gauge giving me one reading and Software giving me another on mine. I had already swapped out the ECT sensor before, wish I had just swapped them both out as they are close together and a bit of a PITA to get at.Easier to do both together than one at a time.............