'91 CQ Melting Fuel Pump Fuse

[Christopher Gharibo]

Josh,

Very helpful. Thank you.  

I looked at a donor fuse box and I am not sure if this thing can be popped open. 

Any advice on how to get into the gut of a fusebox in a way I can put it back together?

Thanks.  



On Aug 3, 2013, at 1:04 PM, Joshua van Tol <jvantol at gmail.com> wrote:

> Measure the current and see if it's excessive. If not, chances are the contacts are just shot, and have too much resistance. While the car's running. you could measure the voltage across the fuse on the contact side (i.e. measure the difference in DC voltage across the wires to each side of the fuse). This will measure the voltage drop across the fuse. If it's more than a tenth of  a volt or so, then there's the problem.
> 
> As far as fixing this, you could pop some contacts out of a donor fusebox, replace the fusebox wholesale, or simply wire around the affected fuse with a standalone fuse holder.
> 
> 
> Josh.
> On Aug 3, 2013, at 8:33 AM, Christopher Gharibo <cgharibo at usa.net> wrote:
> 
>> The fuel pump fuse of my '91 CQ melts its insulation, esp if the car runs hot. 
>> 
>> The fuse doesn't pop until there's a close to complete melt down. Several times, I've found the fuse melted in the fuse box but the car was running fine. 
>> 
>> I replace the fuse and everything runs fine again. 
>> 
>> The contacts are mostly clean but I cleaned them anyway. I also put in gel that will facilitate conduction. The problem is still recurring. 
>> 
>> What're your thoughts?
>> 
>> Thank you.  
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