94 Buick roadmaster

Asked by Apr 06, 2019 at 10:10 PM about the 1994 Buick Roadmaster Sedan RWD

Question type: Maintenance & Repair

I have a 94 Buick Roadmaster with dual electric fans. When
it sitting in park or in drive it starts to overheat but when I
start driving it goes back down to regular temp. I read that
the primary fan kicks on when the guage hits 3/4 scale
which would explain why it cools back down when I start
driving but neither turn on while it's sitting in park heating
up. So I don't think the secondary fan is turning on at all I
replaced the thermostat, the dash temp sensor and the fan
temp sensor, also the relays for both fans. Any
suggestions?

3 Answers

70

Bad radiator flow-stuck thermostat-fan motor not running. Water level to low. You might also have fan motor with fan clutch also, both. Can be a weak fan clutch too. Check fan by turning on your ac with motor on and wait till fan motor starts sometimes it takes a while. If it dont start take it out and check it outside on direct power from battery with wire. Also check oil if any signs of bad head gasket

70

Bad radiator flow-stuck thermostat-fan motor not running. Water level to low. You might also have fan motor with fan clutch also, both. Can be a weak fan clutch too. Check fan by turning on your ac with motor on and wait till fan motor starts sometimes it takes a while. If it dont start take it out and check it outside on direct power from battery with wire. Also check oil if any signs of bad head gasket

1 people found this helpful.
62,435

It could be cooling back down when driving simply because air is again moving through the radiator. If that's the case, then neither fan may be working or coming on when it should. Try applying 12v power directly to the fan and make sure they work, if they do work then you'll have to troubleshoot why they're not coming on.

Your Answer:

Roadmaster

Looking for a Used Roadmaster in your area?

CarGurus has 48 nationwide Roadmaster listings and the tools to find you a great deal.

ZIP:

Buick Roadmaster Experts

  • #1
    DanR63
    Reputation
    690
  • #2
    Rowefast
    Reputation
    320
  • #3
    Js08016
    Reputation
    220
View All

Find great deals from top-rated dealersTM

Search

Related Models For Sale

Used Chevrolet Caprice
3 Great Deals out of 149 listings starting at $5,500
Used Mercury Grand Marquis
12 Great Deals out of 929 listings starting at $1,499
Used Chevrolet Corvette
384 Great Deals out of 14,533 listings starting at $2,900
Used Lincoln Town Car
14 Great Deals out of 1,078 listings starting at $1,000
Used Chevrolet Impala
488 Great Deals out of 23,726 listings starting at $600
Used Chevrolet Suburban
486 Great Deals out of 20,584 listings starting at $1,599

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. Content will be removed if CarGurus becomes aware that it violates our policies.