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2000 chevy astro. Code PO502 - Chevy Chevrolet Cars & Trucks

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5 Suggested Answers

StormStrikes
  • 104 Answers

SOURCE: p0121 code, 2000 chevy astro

Given that you have replaced the TPS and the PCM, the next step would be to check the connector itself and make sure it is making a good connection and there are no corrosion or anything like that on the connector.

After that, ensure that the TPS has the correct voltage to it, usually its around 5vdc, it should never have full batter voltage to it (12vdc). The PCM usually supplies both the 5vdc reference and the ground for the TPS. Its also entirely possible that (depending on where you bought the TPS) that you were given the wrong one for your vehicle. Not a common thing, but it could happen.

The code will be set if the PCM sees a TPS angle that is not consistent with the RPMs of the engine. If you are having any shifting issues such as hard shifts or the engine having to rev higher to shift, that usually a clear indication there is still something wrong with the TPS circuit even if the TPS itself is good.

Hope this helps.

Posted on Dec 31, 2008

  • 26 Answers

SOURCE: 2000 chevy astro starter problems

replace the starter

Posted on Jan 01, 2009

  • 90 Answers

SOURCE: 2000 chevy astro van blower

Yes it could but also check under the hood because it is a very common problem for a vaccumm line to come unhooked causing this problem. Hope this helps, Allen, swiftautorepairs.com

Posted on Oct 01, 2009

  • 1608 Answers

SOURCE: 2000 astro van won't start

What you have to do is check and see if you have fuel pressure.You have to remove the engine cover to check it.If you don`t have a pressure tester then remove the air cleaner hose to the engine and spray it with carb.cleaner or brake cleaner.If it starts for a few seconds then it is more than likely a fuel pump.If it does not start then you have to check for spark at the spark plugs.Make sure you check more than one plug.If no spark then you have to check the distributor cap and rotor.Make sure the rotor is good and cap also.Things that can cause no spark are the ignition module,coil,and cap and rotor.Hope this helps.Good luck.

Posted on Jan 29, 2010

SOURCE: how to change a fuel pump on a 2000 chevy astro va...

It is located in the gas tank, you will need to remove the sending unit at the top fo the tank. To access the sending unit, you will need to drop the tank by removing the straps. It is a big tank so drain as much as possible and disconnect the batter before you start.

Hope this helps

Posted on Feb 15, 2011

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1 Answer

2000 chevy astro van 4.3 v6/I changed dist.cap 4 times in 1 year rotor too/runs rough,hesitation,bad ildeing,could it be dist.gear /shaft are worn/got code po300


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Hello,
Here is a link that will tell you whats involved with changing the heater core

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It is located in the gas tank, you will need to remove the sending unit at the top fo the tank. To access the sending unit, you will need to drop the tank by removing the straps. It is a big tank so drain as much as possible and disconnect the batter before you start.

Hope this helps

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Yes it could but also check under the hood because it is a very common problem for a vaccumm line to come unhooked causing this problem. Hope this helps, Allen, swiftautorepairs.com

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Jul 22, 2009 | 2000 Chevrolet Astro

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Take it to a Chevy dealer and they will be able to get right in. And, at least the time I took my truck there, they did it for free and in less then 5 minutes.

Good luck

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