my 98 Dakota sport wont heat I have changed the radiator cap the thermostat had it flushed 3 times and still no heat shops in my area are at a lose as to what it could be im not using any antifreeze and everything checks out a few people have said to change the water pump because that mite be causing the no heat any ideas would be helpful!

 

Welcome to the forum.

You'll find lots of posts about heat issues. Odds are that your heater core is clogged. It's a common problem.

You can try disconnecting the lines from the core and putting a flushing agent into the core itself, letting it sit, then flushing it out well. Odds are that you'll need to replace it though.

A bad water pump can cause this but normally you'd also be complaining about overheating problems.

 

There is a few methods for a heater core. First of all flush the core backwards and only the core.

Watch this should give you a few ideas what to try.

 

ive had the core flushed a few times and the last time it had a flushing agent in it for 8 hours just sitting and still no heat just changed the water pump same old story no heat! put card board over radiator and no heat but the temp gauge didn't come up either not sure what is going on!

 

What engine do you have if it’s the 2.5 that explains it my heat would take 30 minutes or longer to get hot the 2.5 unless you push it just doesn’t run hot usually and in very cold weather it must run very cool I put a 180 stat in last year and it actually helped me get heat faster as the stat opens up faster.

I live in Arizona and it is hard to get heat in our warm winters of 32

Try a 180 stat