I had the same exact car with same exact problem. I changed the thermostat once and it fixed it for about a year. The issue came back and I changed again and it fixed it again... So I'd say get an OEM one if you can.
our 2009 CRV was taking a long time to get to operating temperature and then fluctuating a lot while driving. a new thermostat fixed it.
Don\u2019t listen to these people I have an 08 ex Sam problem replaced thermostat 2 weeks ago in 15 minutes problem is gone
I had a bad thermostat and it's only indication was the temp rising when going up hills under sustained load.
I had this year ago, thermostat was stuck closed, so coolant couldnt go to big circle and into cooler, it went up after 10 minutes of highway driving up to 115° (obd temps) on dash it wasnt that much
I used the genuine part as there is no desire to redo it again too soon.
Sounds like your water pump is working, but maybe your thermostat is stuck closed? Have you tested the thermostat?
Parts 03F-010-501-B Sensor 04E-121-113-G
Original was stuck open, replaced with new VW which now appears to be stuck closed. ????. Fortunately I have recently acquired a new OE thermostat on clearance for jollies.
After getting mine back together, and filling it back up with coolant, i found the new thermostat from the dealership was stuck wide open and the car wouldn’t get over 110*F.
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If choosing thermostat across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare thermostat across these categories:
In March 2026 on PartReview, thermostat OEM Honda were overall better than OEM Volkswagen.
In March 2026 on PartReview, thermostat OEM Volkswagen were overall more popular than OEM Honda.
By vote balance, thermostat OEM Volkswagen surpassed OEM Honda:
By number of reviews, thermostat OEM Volkswagen surpassed OEM Honda:
In March 2026, according to PartReview, thermostat OEM Honda led more car-specific ratings than OEM Volkswagen:
OEM Honda are chosen by owners of cars such as: Honda Civic, and others.
Thermostat OEM Volkswagen have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of thermostat OEM Volkswagen with: MotoRad, Wahler, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM BMW, OEM Nissan, OEM Audi.
Also available: comparisons of thermostat OEM Honda with: MotoRad, Wahler, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM BMW, OEM Nissan, OEM Audi.
You can also see who is better among other thermostat manufacturers: Wahler or MotoRad, OEM Volkswagen or MotoRad, Mahle or MotoRad, OEM Mazda or MotoRad, MOPAR or MotoRad.
