2002 Dodge Caravan Heater only works on high and at high sp

2002 DODGE CARAVAN
113,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
STARIEYED1
  • MEMBER
  • 2 POSTS
I have an 02 Dodge Grand Caravan Sport - shortly after having the A/C compressor replaced this summer the A/C and heat would only work on high - now that it's colder weather and I'm using the heat, it only gets hot around 2000 rpm's then cools down has the rpm's decrease. The other day the temp gauge went up to hot - temp light came on - I topped off the coolant which cured the problem for a few days but today the temp went back up after about 15 mins of driving. I read that the fan blower resistor might be the culprit for the heat only working on high but what's with the temp gauge going up?
Any insight would be appreciated - thanks!
Oct 9, 2009 at 4:19 AM
Avatar
DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Blower resistor is answer to fan speeds as for coolant loss if no visible leaks then maybe internal. Such as headgasket any white smoke from exhaust on startup? oil look normal?
Oct 9, 2009 at 4:31 AM
Avatar
STARIEYED1
  • MEMBER
  • 2 POSTS
[quote:189861231b="Docfixit"]Blower resistor is answer to fan speeds as for coolant loss if no visible leaks then maybe internal. Such as headgasket any white smoke from exhaust on startup? oil look normal?[/quote:189861231b]

No smoke at all - I believe there is some leakage but only the first time the temp gauge went up. I've been told before there's a small oil leak but nobody can pinpoint where it's coming from exactly.
Oct 9, 2009 at 5:10 AM
Avatar
BURRLIUS
  • MEMBER
  • 12 POSTS
had the same problem with blower motor had the switch and resister changed lasted a week and it went again changed blower motor fixed the problem. the temp gauge problem is probable not related
Oct 9, 2009 at 2:57 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle