overheating and occasional miss

tww

Registered User
Dear SCCOA Folks:

After a long winter nap, my XR7 is back on the road again, playing some old
tricks. I have been driving around without air conditioning (outside temperature
is between 55 and 70). Very slowly, the temperature gauge will creep up. After
15 minutes of city driving, it will be 1/4 up (just below N in NORM). After 30 minutes
of driving, it will be at M or past in NORM, and the "CHECK GAGES" light will
flash intermittently. If I turn on the air conditioner, the temperature gauge will drop
down quickly. Is this car running too hot? The MPG is poor (< 15). I had
a complete tuneup last year (new plugs, wires, O2 sensors). I checked the antifreeze
today and the radiator is full, the overflow bottle is full. When the motor is hot, I get a
little whiff of antifreeze. I see no leaks.

When I am sitting at a stoplight with my foot on the brake, I feel an occasional
hiccup or miss (through the brake pedal and the steering wheel). There is more
vibration in the car than I think is right. I had motor mounts done a few years ago
(maybe 5000 miles ago). Any ideas?

Thanks,

T W
89XR7 , 60K miles
 
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