Need help with inertia fuel shut off switch

[ACCORDDXZ]

Morning all !!!!!
My car has stopped 3 times because of that switch. I want to replace it or just remove it
But I don't know where it is, as you know there is a lot stuff under the dash.
I can't find anything close on this site or You Tube or any other site.

Any help will be most appreciated :D

1989 Accord DX

[conozo]

Do you have the manual. Look for any Dr. Snooz posts, its in his profile link to download.

Its up under the dash on the left/driver size side wall. You can reach it from under the dash, it is a little tricky and has one bolt holding the box on. There are a couple boxes up in that area that look similar but the manual will tell you which one. Also to fix them, the relay solder points just need resoldered. Now with all that said, are you sure its the relay and not the pump itself, what test have you done so far.

[Dr_Snooz]

I think he's working on a carbed car. I'm not sure what a fuel inertia shut off is. How do you know what it's called, but not know where it is?

[Oldblueaccord]

I think he's working on a carbed car. I'm not sure what a fuel inertia shut off is. How do you know what it's called, but not know where it is?


Inertia safety switches were popular with the very early fuel injection cars. Certain forces would trip the switch to shut the fuel pump off. I think I really only remember them on Fords.

I dont think Honda every used them so I guess were all assuming that the posters means the fuel pump relay.

[ShiRen]

Yeah I was confused, didn't think my car had an inertia switch. Check the fuel pump relay under the hood, or your dizzy because the relay is powered by the tach wire. If your tach is not smooth or bounces you need a new ignitor. I would suggest replacing your whole dizzy for a Hitachi one if you don't have one and you don't live in California, they are cheap on ebay. You can tell the difference by looking at it, on the front side of the TEC, the one you don't want, has a big silver ignitor between the cap and the engine.

[ACCORDDXZ]

Gentlemen, I finally found and removed it. This is what it looks like , I don't understand what part is supposed to be the inertial/ moving , part. I looked at every solder joint and can't find a crack, but then any one of the componets could have failed. Any advice will be welcome.

https://www.partsgeek.com/gbproducts/DC/5969-07039188.html?utm_source=google&utm_medium=ff&utm_content=DN&utm_campaign=PartsGeek+Google+Base&utm_term=1986-1989+Honda+Accord+Fuel+Cutoff+Relay+Standard+Motor +Products+86-89+Honda+Fuel+Cutoff+Relay+1987+1988&utm_source=google&utm_medium=ff&utm_campaign=PartsGeek+Google+Basecid=6774379819&aid=79287199093&keyword=833170039624%3A%3Apla-833170039624&kid=833170039624&gclid=EAIaIQobChMIwZzoyoWq8wIVxz2tBh39ZQIQEAQYASAB EgJrMPD_BwE

[InAccordance]

Inertia safety switches were popular with the very early fuel injection cars. Certain forces would trip the switch to shut the fuel pump off. I think I really only remember them on Fords.

I dont think Honda every used them so I guess were all assuming that the posters means the fuel pump relay.

oh man that thing was annoying... had an 85 LTD back in the day and that thing would trip randomly. Guy I got it from thought the pump had gone out. I tapped the switch with a hammer and it fired right up lol

[Oldblueaccord]

Gentlemen, I finally found and removed it. This is what it looks like , I don't understand what part is supposed to be the inertial/ moving , part. I looked at every solder joint and can't find a crack, but then any one of the componets could have failed. Any advice will be welcome.

https://www.partsgeek.com/gbproducts/DC/5969-07039188.html?utm_source=google&utm_medium=ff&utm_content=DN&utm_campaign=PartsGeek+Google+Base&utm_term=1986-1989+Honda+Accord+Fuel+Cutoff+Relay+Standard+Motor +Products+86-89+Honda+Fuel+Cutoff+Relay+1987+1988&utm_source=google&utm_medium=ff&utm_campaign=PartsGeek+Google+Basecid=6774379819&aid=79287199093&keyword=833170039624%3A%3Apla-833170039624&kid=833170039624&gclid=EAIaIQobChMIwZzoyoWq8wIVxz2tBh39ZQIQEAQYASAB EgJrMPD_BwE


Thats a standard style relay that controls the fuel pump. its possible the contacts are just worn out from age.

I would also look at the wire diagram possible worn contacts on the ignition switch side.

The Fuel injection relays are two relays in one. Honda looks at the ignition side so no spark means the other relay cuts off the fuel pump.

[ShiRen]

You removed your fuel pump relay, it has no inertial switches or anything like that. What did you do, jump it? I highly suggest you put a new relay back in its place. Its called a fuel cutoff relay so the fuel pump isn't running while the engine is off, you know, so you don't get in an accident and have a situation with gas overflowing on a hot engine.