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What would cause my Chevy 2002 S10 pick up not to start when it is raining or damp outside.

If I can get it to start first thing in the morning It does OK. If it is wet or raining it does nothing,

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 46 Answers

SOURCE: car stalls in wet weather

Take a look at the ignition system, most likely there are coils and ignition wires on this car, but don't quote me on it. However, this is very likely on a seventeen year old car.
Anyway, if the wires are more than four or five years old, it might be a good idea to replace them as moisture tends to get into the insulation and cause a misfire or stall. (I had this problem with my '89 Tracer and it drove me nuts). Another issue is check the ignition coils and make sure there are no cracks as these will less moisture in and cause a misfire.

Posted on Dec 28, 2008

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SOURCE: starting in damp weather 1993 240 wagon, auto/od, 235k miles

perhaps you need a new cap and roter a new spark plug wire set. they don;t like moisture. also check to see if you have any broken or leaking vacuum hoses. the worse case senerio would be that your head gasket is leaking--at cold temps a little antifreeze will enter until everything warms up and it seals shut due to metal expanding. but since you say it's cold weather only--this probably wou;dn't be the case. good luck.

Posted on Dec 28, 2008

  • 1 Answer

SOURCE: Astro vans that won't start if it's damp/raining outside

I have a 2000 Astro had the same troubles.I saw that the sides of the coil were burned looking.In between the bar that goes around it. This started around 110K It would run badly when wet or high humidity.Then throw up the check engine lite.Put on a new coil so far the problem has no reocured.

Posted on Feb 22, 2009

juncro
  • 467 Answers

SOURCE: chevy s10 2002 starting problem doesn't idle very

check the idle sensr, also buy an scan tool, check the code, a sensor or too are bad

Posted on Jul 29, 2009

  • 13 Answers

SOURCE: 2002 chevy blazer won't start when it is cold/damp

could be a defective distributor cap(crack in it allows moisture in...moisture displaces the spark from where it needs to go).
You could try to replace the distributor cap and rotor.

Posted on Aug 31, 2009

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Will not start when its damp out. when not damp starts right away thank u mike


Astro won't start or very hard to start when damp or rain ...

www.topix.com > Chevrolet Astro
Aug 24, 2007 - Posted in the Chevrolet Astro Forum. Leave a ... 2000 astro, Hardstarting or wont start when wet, once started its fine. I replaced the cap, rotor, gas filter, next rain was hard to start but did after about 10 tries. ... I have a 2000 astrocargo van. 4.3 v6. ... look for a faulty coil. mine passed out in a rainy day.

Van won't start in wet weather - Chevrolet Forum - Chevy ...

chevroletforum.com > ... > Past Chevy Truck, SUV & Vans > Astro
Sep 22, 2007 - I have a 1999 Astro Van and nearly everytime it rains or sometimes when I wash it, it will not start. ... I really like my ASTRO for everything from carrying family, boat, trailer, etc. but if it is not resolved its going before someone gets hurt. ...When it was damp out, the coil case would become wet, and the ...

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Did you take the distributor cap off and see if it has moisture inside ?

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If it is happening more frequently in cold or damp weather it could be a spark issue. Wet or damp weather can effect spark plug wires if there is even minor damage to them (usually occurs durring rain). The other things that come to mind are the fuel pump and lastly the fuel line check ball that is in the fuel tank. If it is leaking then all the fuel in the line will drain back into the tank over night (pressure lost in the fuel line) and this will cause repeated, extended cranking when you first start the car in the morning or after the car has sat for several hours.

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Chevy s10 stalls when wet


Check your spark plug wires, you may have a crack in one of the wires that is allowing moisture to enter, and water and electricity don't mix.

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2002 chevy blazer won't start when it is cold/damp outside. Fuel pump repaced 3 times in a year. What could causing this?Starts fine when weather is nice.


could be a defective distributor cap(crack in it allows moisture in...moisture displaces the spark from where it needs to go).
You could try to replace the distributor cap and rotor.

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hey if its turning over try shooting a little starting fluid in the air cleaner or a little fuel to see if it will start. if it does you got a fuel problem either pump of filter bad.. this is first thing i would do before tearing into something .. Jerry

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Check engine light


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