At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Go under the hood and feel the heater hoses after the engine gets up to temp, if they seem really hot then you may have a problem with the HVAC air temperature control blend door.
Are both heater hoses hot when the heater is on? Look for the water control valve to see if it's letting water into the heater core. The core could be plugged too.
the temp control on your dash operates a hot water valve under hood, it's probably vacuum aparated, like the doors in the heater housing, the valve may be close to heater core,check for vacuum leaks around dash control, totally unrelated leaks can cause problems, and yes a blocked heater core can definitly cause the problem,but I would save that unless it's easy to get at, eliminate other stuff first, luck
check the heater temp. control pot under the hood, inline on one of your heater hoses, it may be sticking causing hot water to only get to your heater core when the engine is at high r.p.m.s
Tankless water heaters normally take a little longer than a regular heater to provide hot water because they have to start and get warmed up. I'm guessing the heater uses a pilot light and that the short amount of hot water when you turn on the tap is hot because when the water is sitting still in the heater the heat from the pilot light is enough to get it hot. The tub faucet will get hot a lot faster than the shower because it lets a lot more water through and empties out the pipes faster than the shower. You could probably speed things up by letting the tub faucet run on completely hot for like 10-15 seconds and then turning on the shower.
×