Keeps overheating, needle goes all the way up then drops to normal,and it will keep going up and down

Thermostat could be sticking, replace it.

Engine Temperature Issue - Please Help! - Mazda 6 Forums : Mazda 6 ...

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Sep 12, 2011 - Join Date: Mar 2006 ... to the gauge) and then after being shut off for 5 minutes, show COLD. ... I'll also confirm, with my AP, that my ECT is around 200 like it normally is. .... VSS, and ECT signals and calculate radiator's heat the radiation ... I noticed my engine temp needle was dipping down and then came ... CEL - Throwing code P0126 (Insufficient Coolant Temperature ...
Nov 18, 2013
Temp gauge needle
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overheating problems
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Temperature Gauge
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Temperature gauge going up and down - CarGurus

www.cargurus.com > Questions > Infiniti > I30

CarGurusAug 20, 2014 - Also as my temperature gage rises but car does not overheat. ... tempneedle gets up towards the red mark while you're driving, then yes, ... i have a 2006Pontiac Grand prix and my temp. goes up to the ... crzgrl637 answered 6 months ago ...the cooling fans won't kick on then you will see gauge over heat.

Car Engine Overheating - Causes and Symptoms of Over ...

Changing gears and the temp gauge have nothing in common. First, check the coolant level. If gets low an air pocket in the engine will cause the gauge to go high, then back to normal. Next would be to check the wiring. could be the gauge/sensor wire is shorting to ground.

Hi, I had the same problem. For my malibu (2000) it was a faulty ignition switch. I replaced it and the instrument panel works fine.

Sounds like possibly water pump. Sometimes the fins break inside and doesn't circulate enough water. I would start there

Your thermostat is sticking or your radiator or heater core is blocked up. If you keep running it like this you will blow the head gasket or worse (warp the heads or block.) if it's not already the case.

You have a blown head gasket. The smoke is probably white and heavy, this is burning coolant.

Hi! The MAF (mass air flow) sensor is surely faulty. The MAF has big contribution on the engine performance specially on the idling an vacuum supply. If the MAF is faulty the rpm will drop eratically or die. Regarding the overheating problem, you may want to check the radiator blower for it may be tripping that sometimes it works and sometimes won't. This can be a good cause. Hope this helps and thank you for using FixYa!

thermostat needs to be changed

It is IMPORTANT That you Correct This ,as Engine Temp is Important. I Recomend the Coolant Temperture Sensor Be Replaced to Correct this.