Welcome to the club!
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Originally Posted by mtgear1
owner of a "brand new" 2009 370z, with only 9,000 miles on it. a 4 year old car with so little miles does raise some concerns, ...
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A lot of ppl don't use their 370Zs as daily drivers, so low mileage, by itself, is not really an issue. You might want to look for any body repairs, frame damage, &c.
Quote:
Originally Posted by mtgear1
what should I be looking out for?, ...
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Just the usual stuff one checks on a used car.
Take it for a test drive and check for weird noises, clunks, vibration, &c. Check transmission for smooth shifting.
Check all the lights for proper operation.
Put the car on a lift and check of the suspension. Look for any leaks while under there. You might want to inspect the differential lube while you have it up in the air - it can get crappy pretty fast. Same for manual transmission fluid. Stick your finger in the fill port of both. Top off or change as needed.
Check the exhaust tips for carbon/oily deposits - shouldn't be any. Some light brown/grey deposits are normal, but the darker the color the more you should be concerned with bad rings, leaking valve seals, &c.
Get a repair history from the dealer that has been servicing the car and/or CarFax.
Check all the fluids (can't check automatic trans fluid) and see if they look clean. If there is any doubt, change them.
Probably a good idea to do an oil/filter change. You don't have to use the high-dollar Nissan ester; any high-quality synthetic or syn-blend will do a good job.
Quote:
Originally Posted by mtgear1
and the car feels very nervous at freeway speeds, with the steering constantly moving and following road imperfections, is that normal?
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Yep. Wide tires will do that. And very little caster doesn't help.
The engine sounds like it has an exhaust leak until it warms up for 30 seconds or so - that's normal, too.
Edit: And pulling the SLU fuse (or installing a bypass harness) is a VERY good idea.