20 Most Recent 1999 Chevrolet Astro - Page 5 Questions & Answers

The fuel pump is in the tank. No easy way to change-tank has to come down.

the lock actuator inside the doors are frozen they need to be replaced

that code has nothing to do with your a/c unit. its saying you have an evap leak somewhere. make sure you check your fuel cap, fuel lines and all vacuum hoses on the engine. also check your fuel filler neck for and pin holes. if you cant find anything, go and get a smoke test done to find the exact problem

The PO 300 is random cylinder misfires & I fail to see whyyou would not have checked for codes & found that issue and corrected it within days of getting any codesIt also sounds like you have a transmission oil leak & are lowon fluid

Check relays,check all eletrical connectionscheck and see if you have current to starter soleinoid

check cat-converter also heat riser may or may not have one could be ststuck shut ,air filter dirty ,fuel filter may be dirty.

i have a 99 astro awd auto 4.3 what is the number of clutches it should have inthe transfer case6

most likely vacuum hoses for heating, ventilation,a/c system

try n change the fillter (strainer)

wat year and has he done any repairs

their are quite a few reasons start with basic --can be in need of tune-up--fuel pump going bad -fuel filter clogging-egr valve carbon clogged or failing--catalytic converter clogging causing exhaust restriction---throttle body dirty or failing --these are the more common problems that can cause ur problem if the vehicles check engine lite is on than most auto stores can rea code and assist u in what direction to take in fixing ur problem good luck

You need to get it into a repair shopYou can't ride around for days,weeks or monthswith a check light onYou know that tells you there is a system failureYou have a driveability issue as well as fuel consumptionNo one can tell you what is wrong ovet the internet,has to be checked out & testing performed

Have the cat converter check as it may be blocking the exhaust system at high speeds . Check for fuel system fault not allowing the tank to vent correctly as you may be getting a vacuum in the tank not allowing the pump to suck fuel through to the engine.

Did you find out what it was? I have the same thing on my 1999 Astro van. It seems like an electrical issue and it varies when I press the gas. I'm thinking fuel pump. It used to make the noise and then stop. Now it doesn't stop.