2004 GM that sat for 2-3 years

[PAIRaDICE]

I recently purchased a 2004 Grand Marquis LS with 34k miles for only $5,000. It was sitting between 2 and 3 years and wouldn't start. So far I've replaced the battery, fuel pump, drained all the gas out, put air in the tires, and had it detailed. I am going to have the oil changed and the tires balanced. It now runs surprising well but I'm concerned that other things could be wrong with it or could go wrong with it. The only thing not working at all is the moon roof.

I plan to put in a can of Seafoam and bring it to a mechanic to check up on it. Any suggestions to what should be looked at besides the following?


Fuel Filter
Belts
Coolant

Thank you in advance!

[Freshmeat]

Change the diff fluid. Just like motor oil, sitting is bad for diff fluid.

[gadget73]

Its also about due for a trans service, and I would have the brake fluid flushed too. Nobody ever changes brake fluid, but it sucks up moisture and drastically lowers the boiling point.

Replace the fuel filter too.

[South Miami Dade]

Its also about due for a trans service, and I would have the brake fluid flushed too. Nobody ever changes brake fluid, but it sucks up moisture and drastically lowers the boiling point.

Replace the fuel filter too.

I never heard of brake issues from not changing brake fluid...Even in the jungle humid heat in Miami...Same thing with P/S fluid...With that said I did let the dealer talk me into changing the brake fluid at 60K miles but have no plans on doing it again.

I put 300K miles on 88 Town Car and 200K miles on a 99 Grand Marquis and never changed the brake fluid or power steering fluid as a maintenance item....I do not know anybody who does it as a regular maintenance thing.

[SVT98t]

I do.
But good score on the MGM! Good luck mang!

-ryan s.

[Cable Guys FGMQ]

Nice find..