1995 Mercury Marquis

ALIAZMET

MEMBER
1995 MERCURY MARQUIS
V8
2WD
AUTOMATIC
185,000 MILES

The floorboard on the front passenger side heats up after about 30 minutes of driving. I have replaced the water pump, fan cluth, reservoir cap, plugs and wires. The cat converter seems good. Though the engine temp shows within the normal range, the 'outside temperature' reading rises pretty fast in idle. Normally the difference between the actual outside temp and one displayed inside the car would be about 6 degrees but now the difference seems to be greater and as said earlier rises quickly at idle. I have a feeling the air coming from the fan seems hotter and more towards the passenger side of the car. I dont' know if this could be a reason. The front outside passenger side is definitely hotter than the drivers' side. Would appreciate any feedback.

Sunday, April 5th, 2009 AT 4:15 PM

3 Replies

OBXAUTOMEDIC

MECHANIC
3,711 POSTS

Hello,

Ok, let me make sure I understand you.

The passengedr floor board heats up and that is your only problem, right? If so then look under the vehicle were the cat is located there should be a metal shield over top of it if there is not then the heat shield is missing which is causing your passenger floor board to heat up.

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Sunday, April 5th, 2009 AT 8:23 PM

ALIAZMET

MEMBER
2 POSTS

Thanks for the reply. Floorboard heating up is one problem, but why is the whole front right side heating up including the floorboard.

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Monday, April 6th, 2009 AT 3:09 AM

OBXAUTOMEDIC

MECHANIC
3,711 POSTS

Does the car sound louder than usual? If so then you most likely have an exhaust leak which would cause the problem. Also check to see if the driver side exhaust manifold has a heat shield if it does then look at passenger side for same if it doesn't then that would cause you problem.

Also recheck the Cat, run the vehicle then take a look at the cat if it is cherry red then it is your cat that is bad.

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Monday, April 6th, 2009 AT 9:34 AM