How to prevent rodents from getting into blower fan and ducts?


Asked by Dec 06, 2015 at 04:47 PM about the 2007 Mitsubishi Endeavor SE

Question type: Maintenance & Repair

I have a 2007 Endeavor which must be parked outside.  I've had repeated
instances of large pack rats getting into the blower fan and ducts.  They
bring in large sticks, long branches, and evergreen pine branches with
needles still attached. They must have found a large entry place. I've taken
apart the glove box and passenger dash but cannot find where they get in.
I suspect it may be the air plenum but I can find it. Can you suggest where
a large entry might be?

5 Answers


I think you need a exterminator, get rid of the problem.


AFAIK the openings that lead to the HVAC box are in the front cowl area. This page shows how to fix blockage in the HVAC box, it should give you some pics of duct openings. - you may want to thoroughly clean out your vents too, as debris can block the blend/mode doors.

2 out of 2 people think this is helpful.
Best Answer

OK. So I'll remove the cowls and look for evidence of entry under there. I've snaked the ducts and found loads of stuff. Large branches so the entry must be big. Pack rats are big dudes. Not mice or chipmunks. The blower fan resistor burned out when the blower fan didn't turn. Replaced that resistor already. Just got to find that entry. Anywhere else to look? Thanks.


Exterminator is a good idea but I live in very rural mountainous area with lots of wildlife. Can't kill all the critters out there. I was told to put peppermint oil all over the interior.


I'm not familiar with your specific car, but typically every car I've worked on has the air intake for the HVAC at the cowl. Look at the area where your wiper arms mount, you'll find a vented screen that leads to a box with a drain (as water can get into it), that has another opening on the sides of it that lead to the fan's 'bird cage.' (blower). If that screen is missing or loose, that's likely how they are getting in. The area at the back of the fenders is hollow, where water/debris from the cowl can drain to the ground, it's a perfect passage for critters to climb up to the cowl area. This area can sometimes get blocked with leaves and other debris, too. The area where the fender meets cowl/firewall and center of cowl (where screened vent opening is) are the areas to look.

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions


Looking for a Used Endeavor in your area?

CarGurus has 705 nationwide Endeavor listings starting at $2,450.


Search Mitsubishi Endeavor Questions

Mitsubishi Endeavor Experts

#1 Daniel Foster
Daniel Foster
Reputation 470
#2 Tom Demyan
Tom Demyan
Reputation 310
#3 gno
Reputation 160
View All

Related Models For Sale

Used Mitsubishi Outlander"
83 Great Deals out of 9,006 listings starting at $2,990
Used Toyota Highlander"
653 Great Deals out of 31,070 listings starting at $1,990
Used Ford Explorer"
1,361 Great Deals out of 72,124 listings starting at $300
Used Honda CR-V"
1,597 Great Deals out of 81,716 listings starting at $1,695
Used Mitsubishi Montero"
5 Great Deals out of 179 listings starting at $995
Used Toyota Camry"
1,651 Great Deals out of 98,959 listings starting at $895
Used Kia Sorento"
560 Great Deals out of 36,031 listings starting at $2,500
Used Honda Accord"
1,309 Great Deals out of 78,750 listings starting at $1,395
Used Honda Pilot"
573 Great Deals out of 19,669 listings starting at $1,800
Used Jeep Grand Cherokee"
1,201 Great Deals out of 74,210 listings starting at $1,500
Used Toyota RAV4"
1,226 Great Deals out of 49,367 listings starting at $2,495
Used Toyota 4Runner"
360 Great Deals out of 18,966 listings starting at $2,400
Used Mitsubishi Lancer Evolution"
20 Great Deals out of 808 listings starting at $16,995

Used Cars For Sale

2011 Mitsubishi Endeavor SE For Sale
4 listings starting at $11,990
2010 Mitsubishi Endeavor SE For Sale
5 listings starting at $7,995
2008 Mitsubishi Endeavor SE For Sale
15 listings starting at $5,950
2007 Mitsubishi Endeavor SE For Sale
18 listings starting at $5,990