Does a radiator build up natural pressure after cooling overnight?

Asked by May 29, 2015 at 02:19 PM about the 2002 Toyota Tundra 4 Dr Limited V8 Extended Cab SB

Question type: Maintenance & Repair

Having replaced my radiator 5 days ago, I check it constantly now after the engine cools. During day usage, I
do a quick look and notice that the overflow reservoir coolant level rises a little above F. Before driving this
morning, the reservoir was right at F. Opening the radiator cap released a little pressure and the coolant was
up to the neck. Is everything normal? Having done this replacement myself I want to be sure. Thanks for
answers.

2 Answers

39,965

Yes, that's fine. As the coolant get's hot and expands, any excess will purge itself back into the jug causing it to rise. As it cools and everything contracts, it will suck coolant back in from the bottle. As long as your temp gauge stays in the normal range, everything should be good.

1 of 1 people found this helpful.
Best Answer
68,695

Absolutely. When the coolant gets hot it expands. Some coolant is forced into the plastic recovery tank so the level rises. When the engine cools the coolant contracts and coolant is pulled back into the radiator. What you're seeing and hearing is perfectly normal. Good job on the radiator replacement!! HTH. -Jim

1 of 1 people found this helpful.
Best Answer

Your Answer

Add photo

Related Questions

Search Toyota Tundra Questions

Toyota Tundra Experts

#1 Tom Demyan
Tom Demyan
Reputation 420
#2 budgoo
budgoo
Reputation 370
#3 tennisshoes
tennisshoes
Reputation 280
View All

Related Models For Sale

Used Toyota Tacoma
551 Great Deals out of 42,266 listings starting at $1,995
Used Ford F-150
2,085 Great Deals out of 192,330 listings starting at $290
Used Chevrolet Silverado 1500
1,934 Great Deals out of 182,332 listings starting at $999
Used GMC Sierra 1500
792 Great Deals out of 68,002 listings starting at $1,700
Used Dodge Ram 1500
399 Great Deals out of 10,884 listings starting at $1,000
Used Toyota 4Runner
222 Great Deals out of 19,179 listings starting at $2,300
Used Ford F-250 Super Duty
331 Great Deals out of 43,931 listings starting at $1,450
Used Chevrolet Silverado 2500HD
326 Great Deals out of 28,523 listings starting at $990
Used Toyota Sequoia
121 Great Deals out of 5,291 listings starting at $2,500
Used Nissan Frontier
333 Great Deals out of 20,679 listings starting at $1,250
Used Chevrolet Tahoe
591 Great Deals out of 33,009 listings starting at $1,500
Used Dodge Ram 2500
116 Great Deals out of 5,079 listings starting at $2,999

Used Cars For Sale

2017 Toyota Tundra For Sale
18 Great Deals out of 20,834 listings starting at $26,900
2016 Toyota Tundra For Sale
46 Great Deals out of 1,829 listings starting at $23,995
2015 Toyota Tundra For Sale
36 Great Deals out of 2,019 listings starting at $19,950
2014 Toyota Tundra For Sale
55 Great Deals out of 2,145 listings starting at $14,990

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.