can my guage be 30 degrees off? [Archive] - Chevelle Tech

: can my guage be 30 degrees off?


Davec43
May 27th, 06, 3:48 PM
Temp on my thermo has been reading between 200-210 steadly rises.... 18 inch flex fans/shroud alumitech rad/ stewart stage 1 waterpump. Bought a craftsman infared thermometer and put it on the top radiator hose red between 170-180 is my guage that wrong? Or am I testing it in the wrong spot?

SuperChevy402
May 28th, 06, 11:20 AM
Is this on a stock gauge or aftermarket?

Davec43
May 28th, 06, 11:26 AM
Sorry aftermarket guage and its reading it from the passengers side head as well... Ceramic coated headers and aluminum heads.

BillsCamino
May 28th, 06, 11:33 AM
...and its reading it from the passengers side head as well...
That's the issue...always a higher reading when taken from the head. Probably the hottest part of a motor.
Move the sender to the intake near the thermostat, if possible.

Davec43
May 28th, 06, 11:36 AM
Old old intake and the sending units broke off in the intake to where I can't get it out. Just want peace of mind I'm not going to destroy my engine lol till I replace the intake.