mikyrc
15+ Year Contributor
- 197
- 4
- Nov 18, 2003
-
Spain,
Europe
Hi guys I'm havving a little electrical problem and I don't know what can be the cause.
Everytime I turn the heater fan the electrical temp gauges I've installed does read around 5ºF more or so. It's more notticeable at max blow and A/C ON.
Well it seems that when there's something that places a high load to the electrical system the gauges read a bit off.
I tried to place a new ground wire from the batt terminal to a CAS bolt just in case there was a bad ground on the thermostat area but didn't help.
What can cause that and how to solve it?
A bad ground inside the cabin?
I would say the alternator is Ok as I've never got any ALT/brake warning light on the dash.
I've checked voltages with the engine NOT running and I got that:
Key on, ignition On, no fans working:
Batt voltage 12.36v
MMcd reported voltage 12v
Key on, ignition On, heater fan at max and A/C on (both radiator fans working):
Batt voltage (multimeter) 12.01v
MMCD reported voltage 11.7v
Everytime I turn the heater fan the electrical temp gauges I've installed does read around 5ºF more or so. It's more notticeable at max blow and A/C ON.
Well it seems that when there's something that places a high load to the electrical system the gauges read a bit off.
I tried to place a new ground wire from the batt terminal to a CAS bolt just in case there was a bad ground on the thermostat area but didn't help.
What can cause that and how to solve it?
A bad ground inside the cabin?
I would say the alternator is Ok as I've never got any ALT/brake warning light on the dash.
I've checked voltages with the engine NOT running and I got that:
Key on, ignition On, no fans working:
Batt voltage 12.36v
MMcd reported voltage 12v
Key on, ignition On, heater fan at max and A/C on (both radiator fans working):
Batt voltage (multimeter) 12.01v
MMCD reported voltage 11.7v