Question about 2000 Chevrolet S-10

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Electrical Problem For three years in a row now beginning around August and September, I start my truck in the morning and take it on the freeway for about 15 minutes. Coming off the exit ramp of the freeway and decelerating to about 40 - 50 mph there is a strange clicking noise like a solenoid that sounds like pouring marbles into a steel garbage can. When this happens all the lights on dash come on and the speedometer erratically fluctuates to about 20 mph faster than the truck is traveling. The voltmeter also drops to about 8 - 9 volts. The LED odometer/transmission gear indicator also dims and brightens while this is going on. Tried replacing alternator, but problem persists. Problem usually doesn't occur after 11 am. Not sure if its heat/humidity related. I am in Dayton OH. Problem usually goes dormant in October and returns the following summer. This has me perplexed and dealer couldn't find cause because it didn't act up while they had it.

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  • GeraldB Sep 11, 2008

    I tried covering my fuse box with plastic wrap. I washed the truck and intensionally tried to get water spray from the hose through the grill and along the crack between the hood and the fender where the fuse box is. For a while the problem didn't reoccur. This morning it happened again. It was a cool morning of 52 degrees at 8:55 am. Could condensation be building up inside the fuse box and relays, and then it evaporates by late morning? It only seems to happen in city driving while the truck is actually moving. It never does it at idle. Another thought is that maybe it's related to the overdrive in the transmission. Is it electronically controlled?

  • GeraldB Sep 13, 2008

    Pinpointing the exact relay is going to be a bit of a challenge since the problem only happens while the truck is moving. On the evening of August 10, I washed the truck. The problem hadn't reoccurred yet this summer. On the moring of August 11, the problem was back in full force. I drove the truck to the job site. At 10 am I got back into the truck to leave. The truck wouldn't start. I turned the key and only the dummy lights came on. The starter didn't engage. I had the truck towed to the dealer and they found a bad starter relay and replaced it. The tow truck operater said my symptoms almost always point to a failing alternator, so I had the alternator replaced too. Now having changed the alternator and relay, and $700 later, the problem still exists. :(



    Hope that bit of information helps.

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Sir,


Your problem of getting sticking noise is due to wetting of ur fuse box,cover it with plastics or a box.
make sure that the waste from the container and the waste from the road should not affect the fuse box.
this will give a solution for ur problem.

Posted on Sep 11, 2008

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Hi.. sir.. 
 it is a relay problem... due to one relay pick up don't de- energise it.. due to it it make that sound.. u need to change that specified relay.   thank u..

Posted on Sep 11, 2008

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This sure sound like a condensation problem to me . and living in the area of the county you do.first thing you can do is move to a southern state like arizona ha ha. im thinking your getting condensation not in the fuse box but the controll wires to the relays . can you pinpoint the exact relay that is clicking. then we can follow the wiring to the posible cause..
ill pull the wiring diagrams and lets find the relay and go from there.

Posted on Sep 11, 2008

  • paul erickson
    paul erickson Sep 14, 2008

    after going threw all your comments i think you have a short in the wiring i can realy pinpoint it from what you have told me. but i would look arounf your exaust system and all the wiring around the starter. let me know what you find and or if you have more info for me
    paul


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Is there water getting into the relay or moisture that ticking noise is the mosture or water earthing the car out

Posted on Sep 11, 2008

  • chris07551 Sep 11, 2008

    another thing is water in the distributor ,

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The ticking nois is coming from one relay in your fuse box, check if wate is getting inside fuse box, use sylicone to seal the fuse box.

Posted on Aug 21, 2008

  • Ginko
    Ginko Sep 11, 2008

    If plastic wrapping is not enough, you can try sealing the fuse box with sylicone sealant paste.

    But mainly, the relays in your fuse box are to a certain extent sealed. Just find out what relay is ticking and replace it.


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Try wrapping the main relay panel under the hood with something plastic, see if that helps ...if so there may be a breach in the seal
try to locate it and repair.
and yes humidity wreaks havoc on vehicle electronics.

Posted on Aug 21, 2008

  • kristopher betzler
    kristopher betzler Sep 14, 2008

    try buying some dialectic grease , and pull each fuse and relay on at a time. coat each prong every one of them , and see if that helps with the moisture problem.

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