Pontiac Transport blower motor question

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Bobby Autry

Seaman Apprentice
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Jul 6, 2006
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46
Hello,

I have a 1995 fuel injected 3.8 liter Pontiac Transport that blows the high speed heater blower motor relay. I have replaced these relays a couple of times within the past 2 years. Today I had to replace it again and am wondering what is causing this occurrence. It doesn't do this all the time just once in a while. I went ahead and relaced the blower motor which was still working but was manufactered according to the sticker on it 10/04/95 which I beleive is a 1995 blower motor and maybe is worn out and drawing amps. Hopefully this has fixed the problem but not a 100% it has. Everything works fine now. I was just curious what you guys thought?
 
dolluper

dolluper

Captain
Joined
Jul 19, 2004
Messages
3,900
Re: Pontiac Transport blower motor question

Do you park with the blower on high{the fan switch} then restart the van with it blown high...if so turn it down before parking......blowing relays is usually old age,short or bad GROUNDS
 
B

Bobby Autry

Seaman Apprentice
Joined
Jul 6, 2006
Messages
46
Re: Pontiac Transport blower motor question

Dolluper,

Yes. My wife drives the van and I do notice that the heat has been left on high before I crank it and sometimes I don't turn it off or down before I crank it. My question is should I put my old blower motor back in and take the new motor back to the auto parts store since it was still working when I removed it. The only reason I replaced it was I thought maybe since it is so old that it might be worn out and drawing excessive amps causing the relay to blow, but I am not so sure if that is what the problem is, just a thought. What do you think?
 
dolluper

dolluper

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Joined
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3,900
Re: Pontiac Transport blower motor question

They usually make a bunch of squillen{dry bearing} before they just stop working ,Idd use it till it quit you could do a draw test on it but O/P is waste of time....Relays are really just a set of points converting different amps,volts so shorts or bad grounds esp can take them out pretty fast
 
X

Xcusme

Commander
Joined
Apr 21, 2003
Messages
2,888
Re: Pontiac Transport blower motor question

Bobby, your van has a blower relay?? I didn't know it (mine) had a blower relay, I'll have to look at the elect. circuit. I did have to replace the blower speed board (low speed resistor trace burned up) . Other than that, no problems with the blower at all ( '98 Venture)

BTW, if it is the replay, I'd think it would be a Bosch type with a 30 amp contact rating.....now you got me curious ....
 
dolluper

dolluper

Captain
Joined
Jul 19, 2004
Messages
3,900
Re: Pontiac Transport blower motor question

It's not a blower motor relay but a high speed fan relay,usually in a pack of three or more fuelpump relay,high speed fan relay,rear defrost relay,and cooling fan relay mostly on air conditioned vehicles,newer vehicles have them in the underhood fusebox and much smaller
 
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Xcusme

Commander
Joined
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Messages
2,888
Re: Pontiac Transport blower motor question

Gotcha, thanks for the info.....
 
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