Engine cuts offs while running/driving - AcuraLegend.Org - The Acura Legend Forum for All Generations of the Honda / Acura Legend; 1986 to Present

Joedoak · 02-03-2021, 12:28 PM

Over the past year, my engine has cut off 4 times while running. Twice while parked and idling. Once during initial take off from a stop sign. Then today, after hitting a big bump driving around 30 mph. Each time the car started right back up with no issues whatsoever.

Restarting right away makes me think it isn’t fuel pump. Right?

I replaced the main relay with a brand new OEM one about 1.5 years ago. Fuel filter replaced about 3 months ago.

Maybe the ignition switch?

Thanks for the advice.

94LegendaryAcuraGS · 02-03-2021, 12:45 PM

I really have no idea on this one but shall watch curiously for others to input.

The fact you replaced the main relay covers the only "possible idea" I had initially. Cracked joints in those could possible separate in a good jolt and then make contact again. Its very "interesting" how that main relay is basically a "red light", "green light" for telling the fuel pump on or off. When they're operating properly its a fantastic thing and when they aren't they turn what was originally a $40 - $45 luxury flagship automobile into basically a HUGE PAPERWEIGHT!

Joedoak · 02-05-2021, 12:24 PM

Quiet here.

Just visited with a local mechanic friend of mine. He thinks my key chain is too heavy, and that, coupled with a weak ignition switch is causing the issue. I stripped down to just the Legend key and fob. We’ll see.

alittlethin · 02-06-2021, 11:02 AM

Quote:

Originally Posted by Joedoak

Quiet here.

Just visited with a local mechanic friend of mine. He thinks my key chain is too heavy, and that, coupled with a weak ignition switch is causing the issue. I stripped down to just the Legend key and fob. We’ll see.

might be a weak main relay? easy to check just look in this forum for "Main Relay"

Juicemon · 02-08-2021, 12:49 PM

Quote:

Originally Posted by alittlethin

might be a weak main relay? easy to check just look in this forum for "Main Relay"

Definitely switch or main relay. Even after replacing my main relay it sometimes acts up like the plug isn't very snug and I have to grab it to turn the car over and it has exhibited nearly cutting out in motion.

Captain Slow · 02-10-2021, 04:23 AM

This happened to me a few times years ago. My car would stall when slowing to a stop, probably when the auto transmission changed down from 4th to 3rd. It was sludge in the throttle body. Remove the intake breather tube at the throttle body and wipe it clean with a towel. That's it.

02-03-2021, 12:28 PM	#1
Joedoak Member Join Date: Apr 2013 Location: California Posts: 144 '09 ACURA TL SH-AWD '09 AUDI A4 2.0T AVANT QUATTRO '92 ACURA Legend Coupe LS	Engine cuts offs while running/driving Over the past year, my engine has cut off 4 times while running. Twice while parked and idling. Once during initial take off from a stop sign. Then today, after hitting a big bump driving around 30 mph. Each time the car started right back up with no issues whatsoever. Restarting right away makes me think it isn’t fuel pump. Right? I replaced the main relay with a brand new OEM one about 1.5 years ago. Fuel filter replaced about 3 months ago. Maybe the ignition switch? Thanks for the advice.

02-03-2021, 12:45 PM	#2
94LegendaryAcuraGS The Mad Scientist!! Join Date: Jul 2009 Location: Inside the LAB!! ;-) Near Magic City Alabama Posts: 6,845 '93 ACURA Legend Coupe LS '94 ACURA Legend Sedan GS Real Name: DUH The Mad Scientist!! A.K.A. Chaka	I really have no idea on this one but shall watch curiously for others to input. The fact you replaced the main relay covers the only "possible idea" I had initially. Cracked joints in those could possible separate in a good jolt and then make contact again. Its very "interesting" how that main relay is basically a "red light", "green light" for telling the fuel pump on or off. When they're operating properly its a fantastic thing and when they aren't they turn what was originally a $40 - $45 luxury flagship automobile into basically a HUGE PAPERWEIGHT! __________________ 3.5 Type II Hybrid Club Member! *The Mad Scientist*!!

02-10-2021, 04:23 AM	#6
Captain Slow Ken Join Date: Jun 2009 Posts: 1,838	This happened to me a few times years ago. My car would stall when slowing to a stop, probably when the auto transmission changed down from 4th to 3rd. It was sludge in the throttle body. Remove the intake breather tube at the throttle body and wipe it clean with a towel. That's it. __________________

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02-05-2021, 12:24 PM	#3
Joedoak Member Join Date: Apr 2013 Location: California Posts: 144 '09 ACURA TL SH-AWD '09 AUDI A4 2.0T AVANT QUATTRO '92 ACURA Legend Coupe LS	Quiet here. Just visited with a local mechanic friend of mine. He thinks my key chain is too heavy, and that, coupled with a weak ignition switch is causing the issue. I stripped down to just the Legend key and fob. We’ll see.

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