84 4k oil pressure light

[L DC]

--- On Sun, 12/14/08, Bares, Vittorio <Vittorio.Bares at nuance.com> wrote:

> new issue is that the water temp gauge is flaky - shows just a
> little temperature, climbs to just above cold, then drops to nothing
> again - When it does this - the car will stumble a little on 1st gear
> start up. I suspect the water temp sender on the cooling hose flange
> attached to the block.

The small sensor on TOP of the cooling hose flange is the temperature sender for the temp gauge in the instrument cluster.

The other sesor, a little bigger, UNDER the cooling hose flange is the coolant temperature sensor, which tells the computer to richen or lean the fuel mixture, I believe.

You must a a semi-loose connection if car "stumbles a little" on first gear + Vibration. If pull the harness connection the fuel mixture will richen to the point that the engine will stumble and stall to a stop, BTDT.

-Regards,

LDC 

 
> However, there's also a temp sensor on the same flange below that and
> one on the radiator. I think the one on the radiator is for the fan 

Correct

> not sure what the one on the flange is for?

Coolant temperature sensor for ECU--Read above
 
> Thanks,
> 
> Vittorio -