Chevrolet Astro Questions

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change all o2 sensors checked evap sonsors

Had new master cylinder cover put on old one floppy from age so was leaking fluid brakes fine just light staying on doesn't go off

We Don't do anything to try to fix it, it turns on by its self. This started about a month ago. It tries to start but it doesn't, engine shakes after I stop turning the key. Thank you

My van acts like its not getting gas but you can stomp the gas (clear her throat) and it will seem to clear up for a while (sometimes) Air conditioner makes it worse but still does it with air off. SCanner says "no problem".

My rear AC works sporadically. When it works it cools fine, when it doesn't it won't blow at all. Sometimes you can shut the front doors hard and it will come on but not always.

the rear ac works sporadically and is cold. When it runs it will work on all speeds. Sometimes when it is not working you can shut the driver or passenger door hard and it will come on and work but sometimes not.

When we replaced the 40 fuse it ran now a week later same problem but this morning it just blew each fuse when tried to crank

2000 Chevy Astro AWD
Had to recharge battery after sitting this winter. Started right up first attempt. next day will turn over, but not stay running. Before sitting past winter, was having difficulty staying running, after a few miles would chug and eventually die and not restart. Would have a better chance at starting if I let it sit for a day after running. Any idea what this could be?

It will allow me program any one of my three remotes, but when I try to program a second remote, it will not work. I am at a loss as to why I can't program my other remotes.

park it makes grinding noise, van still rolls back in gear,,, wont drive.when in gear,,maybe possible cable broke, feels like its not catching gears, thers still transmission oil, starts fine just wont drive at all..

I basically want to know what have I got myself into. I can not find anything period on the internet giving me any kind of an idea of what i'm up against. If you can give me any info, tips, or let me know if I'm gonna have to have some special tools and what not, I would greatly be appreciated.
Bill H.

It just started without indicating any problems prior.

i replaced the filter but no change

It has 250,000 miles on the engine. About how much should it cost me to replace the timing chain/belt ?

I slowly turned the key in the ignition (part way). But BEFORE the key turned all the way, to actually turn over (crank) the engine, I heard a REALLY loud "pop" sound like an air rifle, and smoke came out (seen at right window). Now the van was NOT running yet. I waited a moment and then turned the key all the way, and the van started fine. The gauges were fine, and I drove home (18 miles) without incident. So what WAS that? Any ideas?