Under Hood Fuse Block 1
Thread Starter
Racer
Joined: Jun 2019
Posts: 390
Likes: 126
From: Franklin, TN
Under Hood Fuse Block 1
I have been chasing a blower motor intermittent stop/start issue for several days. Today, with the blower running, I gently moved the Fuse Block #1 under the hood behind battery (it contains a 30amp blower motor fuse) and, when I did that, the blower fan motor would stop and start with the movement. I have checked the wire on circuit 1451 for continuity and it checked good. I need to remove the block to locate the loose connection but I am hesitant to attempt the removal without some advice. I was wondering if anyone knows what I will find behind it, i.e. are the wires soldered, screwed or spade plugged etc. in to the fuse box? Also, it appears from the FSM diagrams to be connected to a fusible link.
Any advice/counsel on this issue would be greatly appreciated. Thanks
Forgot to mention, it is a 1993
Any advice/counsel on this issue would be greatly appreciated. Thanks
Forgot to mention, it is a 1993
Last edited by jrobin1; Jul 10, 2021 at 01:16 PM.
Thread Starter
Racer
Joined: Jun 2019
Posts: 390
Likes: 126
From: Franklin, TN
Thanks Kevova. I took the block out, removed the plastic retainer clip and the wires were connected with a female spade connector that looked unique. I gently tugged with some needle nose pliers but to no avail. I was afraid to put to much pressure on the connector. There was corrosion on the wires, on the fuse prongs and in the fuse connectors. I cleaned with electrical cleaner and a wire brush. I did not see any broken, cut wire and the continuity test was good repeatedly. I put it all back together and the blower works. Don't know for how long.
Your response indicates you are familiar with the connectors in the block. Is there a secret code for removing the wire from the connector? There is just too much stuff powered out of that for me to use a sledge hammer to get them loose.
Your response indicates you are familiar with the connectors in the block. Is there a secret code for removing the wire from the connector? There is just too much stuff powered out of that for me to use a sledge hammer to get them loose.
Thread Starter
Racer
Joined: Jun 2019
Posts: 390
Likes: 126
From: Franklin, TN
Yes. That is what it looked like. I just was not able to disconnect the wires from the back of the block. Did not want to be real aggressive with the connectors. They appeared to be locked in and I could not remove them with needle nose pliers. As I mentioned, I cleaned all connections, checked the continuity of the 1451 circuit several times and then put everything back together. The blower works now. However, it was working intermittently before in went in. So we will see how it goes.
Team Owner
Joined: Sep 2003
Posts: 25,357
Likes: 2,729
Yes. That is what it looked like. I just was not able to disconnect the wires from the back of the block. Did not want to be real aggressive with the connectors. They appeared to be locked in and I could not remove them with needle nose pliers. As I mentioned, I cleaned all connections, checked the continuity of the 1451 circuit several times and then put everything back together. The blower works now. However, it was working intermittently before in went in. So we will see how it goes.
This thread shows how the firewall side of the C100 is assembled. The wire and terminals are retained in that block similarly.
https://www.corvetteforum.com/forums...post1603510564
Last edited by WVZR-1; Jul 10, 2021 at 09:30 PM.
Thread Starter
Racer
Joined: Jun 2019
Posts: 390
Likes: 126
From: Franklin, TN
WVZR-1, thanks for the info. That D item is the plastic retainer clip that I mentioned above. I removed that and it appeared that the connectors should come off but I just didn't want to put to much pressure on it, not knowing what I was doing. With the input that I have received, if I have to go back in, I will be more aggressive about removing the wires.
Team Owner
Joined: Sep 2003
Posts: 25,357
Likes: 2,729
WVZR-1, thanks for the info. That D item is the plastic retainer clip that I mentioned above. I removed that and it appeared that the connectors should come off but I just didn't want to put to much pressure on it, not knowing what I was doing. With the input that I have received, if I have to go back in, I will be more aggressive about removing the wires.
This is what I believe you'll find:
You should be able to fabricate a release tool.
Last edited by WVZR-1; Jul 11, 2021 at 09:18 AM.
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Thread Starter
Racer
Joined: Jun 2019
Posts: 390
Likes: 126
From: Franklin, TN
I know the motor is not bad because I applied power to the blower motor and it works. Plus the problem in intermittent, the blower works and then stops. I swapped the blower control module with another 93 and the swapped unit did not solve the problem. As I mentioned earlier, I could recreate the intermittent problem by gently moving the #1 Fuse Block. Since the Fuse Block clean up it has been working fine. Don't know how long it will last.
WVZR-1, thanks for the diagram of the connector. I now know why I could not get it off. Will do better if I have to go back in.
WVZR-1, thanks for the diagram of the connector. I now know why I could not get it off. Will do better if I have to go back in.