Replaced T-Stat, still a bit cold.

JWhirl06 · Dec 11, 2009

Did a heater core back flush, clear as vodka running out both sides of the tube. Also replaced a dead 180 tstat with a 195. Engine running nice and hot, but I'm still blowing out rather cool air. It's -9°F where I'm at right now, but it still seems like I should be getting way more heat. Any suggestions?

skitzo.d · Dec 11, 2009

Maybe the mixer valve door is stuck in the cold position?

Durangutan · Dec 11, 2009

Blend door? Not sure what year yours is, but here are the adjustment procedures for the Gen 1's:

This link is for 2001+

This link is for 98-00

JWhirl06 · Dec 11, 2009

thanks buddy, I'll try this when I get off work. That's probably the issue, the heat hasn't worked right since I had that heater core installed.

IndyDurango · Dec 12, 2009

At -9, cold is cold.

Place a piece of cardboard about 1/2 the size of the radiator right in front of it to block some air flow. If it gets too hot on the gauge, stop and tear a piece off the cardboard. Repeat until you get to the driving temp on the gauge you're looking for.

Once the engine temp is up where you want it, the temp to air ratio inside the D is simply a function of allowing enough time to raise the larger air space inside.

HTH,

IndyDurango

tomk · Dec 12, 2009

On my '99, I found that using Water Wetter helped the heater output somewhat on really cold days. But the early Gen-1's had pretty marginal heat anyway.

JWhirl06 · Dec 12, 2009

Doing the thing with the heater control on the dash definitely works, till I rotate it back to 12 o'clock and pop it back into place. Right now I've got it semi popped off, with it cranked to "115%" lol.

Neil · Dec 12, 2009

I'm not understanding the adjustment. If I pull the knob out and rotate it, it doesn't press back in at the 1 o'clock position.

RebelX · Dec 12, 2009

I'll definitely have to try this. lol Replacing my t-stat and flushing the heater core helped a lot, it got a lot of gunk out. It heats better but not good enough for northern Iowa next month. lol

tomk · Dec 12, 2009

I recall that it took me several tries on my '99 to figure out what the procedure really wanted you to do.

And, unfortunately, it's been so long that I've forgotten.

Not that it takes all that long these days.

?tom

JWhirl06 · Dec 13, 2009

Neil said:
I'm not understanding the adjustment. If I pull the knob out and rotate it, it doesn't press back in at the 1 o'clock position.

I don't get it either but try this:<ul>[*]Rotate the knob to 12 o'clock.[*]Pull it almost off but not quite.[*]Turn it about 4 or 5 clicks past the full heat position to almost 6 o'clock.[/list]See how good your heater works there. Mines amazing! I have my knob semi popped out right now and guess that's what I've got to do till I have time to figure it out.

Replaced T-Stat, still a bit cold.

JWhirl06

skitzo.d

Durangutan

JWhirl06

IndyDurango

tomk

JWhirl06

Neil

RebelX

tomk

JWhirl06

Top Contributors this Month

Recommended Communities