1995 Del Sol Si fuel troubles
 

The car won't send power to the fuel pump while cold. If I start it with starter fluid, the problem is fixed for the day.

Quick list of things I've done trying to fix this.

-replaced fuel pump and filter

-pulled injectors and cleaned them

-replaced main relay. Yesterday it wouldn't start at all on the old relay, but it fired right up with the new one.

This is my first car I've worked on. At this point it's just absurd. I'm pretty much totally stuck.

Re: 1995 Del Sol Si fuel troubles
 

Sounds like a bad ECU. If so, you can either replace the ECU or the ECU electrolytic capacitors.

Start by opening the ECU to inspect the printed circuit board. A swollen or leaking capacitor is generally a bad capacitor. You can also desolder the capacitors and measure their capacitance with some types of multimeters.

Re: 1995 Del Sol Si fuel troubles
 

Good thought. I looked up how to reset it on a whim. Fuses are out now, just gotta wait for 10 minutes apparantly.

Can you help me out with the location of the ecu? I know it's behind the glovebox, but I don't know how to proceed.

Re: 1995 Del Sol Si fuel troubles
 

ECU is behind the passenger kick panel.

https://cimg1.ibsrv.net/gimg/honda-t...78b86f4bd3.jpg

Re: 1995 Del Sol Si fuel troubles
 

Reset actually worked! Praise Jeebus, there was no way I could afford an ECU. Thank you so much.

Re: 1995 Del Sol Si fuel troubles
 

I hope you are right, but problem will likely recur.

Re: 1995 Del Sol Si fuel troubles
 

I will be on alert.

Re: 1995 Del Sol Si fuel troubles
 

Best of luck!

Re: 1995 Del Sol Si fuel troubles
 

Of course that didn't work. If it's the ECU, then the car is basically scrap metal to me. Starting to hate this wonderful little car.

Re: 1995 Del Sol Si fuel troubles
 

https://cimg0.ibsrv.net/gimg/honda-t...a946d830d7.jpg
https://cimg2.ibsrv.net/gimg/honda-t...6d486fdb1d.jpg
If there is something wrong with it, it's not visible

Re: 1995 Del Sol Si fuel troubles
 

The cost of an electrolytic capacitor, which generally go bad to cause the type of problem you are having, literally cost pennies.

Re: 1995 Del Sol Si fuel troubles
 

If you don't feel up to the task of replacing the capacitors yourself, you can send it to Hondata and they will do it for $50.

Re: 1995 Del Sol Si fuel troubles
 

Well at least I have an idea what it is.

Re: 1995 Del Sol Si fuel troubles
 

I circled examples of electrolytic capacitors in your ECU. Inspect all of them for swelling (generally at the top) and/or leakage (generally at the bottom). Any of these abnormalities indicate a bad capacitor.

However, not all bad capacitors can be identified by inspection. In this case, you need to desolder them from the printed circuit board and measure their capacitance. Some multimeters are able to measure capacitance, but make sure the capacitance rating is not higher than the micro-farad limit of the multimeter.

I believe that one of the two capacitors marked by an asterisk controls the fuel pump.

Watch some YouTube videos on desoldering and resoldering capacitors on a printed circuit boards (PCB). It's easier than you think.

I buy replacement capacitors here:

https://www.mouser.com/

https://cimg4.ibsrv.net/gimg/honda-t...8e0f7b20b1.jpg

Re: 1995 Del Sol Si fuel troubles
 

I guess I'll post back here when I have a soldering iron then.

edit: found the 2 bad capacitors. They have corrosion on the board stemming from them.

Re: 1995 Del Sol Si fuel troubles
 

And watch the YouTube videos!

Re: 1995 Del Sol Si fuel troubles
 

Is one a capacitor I marked by an asterisk?

Please post pics to show some nice examples for other members.