Intermittent engine shutting off while driving and multiple gauges lights are on

Tiny
KINGWAVY33
  • MEMBER
  • 1990 LEXUS LS 400
  • 4.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 280,000 MILES
So I have changed out my battery, alternator, and ECU but my brake, battery, oil, and gauge lights are still on. While I drive sometimes the car shuts off. I don't know what's wrong and really need some help.
Monday, February 10th, 2020 AT 10:47 PM

5 Replies

Tiny
JOETECHPRO
  • MECHANIC
  • 705 POSTS
Hey KINGWAVY33,

Can you please send a picture of the dash lights you have on with the engine running?

Can you describe what happens when the car shuts off please?
Does it stutter and stall or just completely cut out instantly?
Do any certain driving conditions make this occur, light/heavy throttle, at idle etc?

Does it start straight back up and run normally?
Is the cranking time longer when starting after cutting out?

Have you checked for engine management fault codes?

Guide as to how to check for engine management fault codes in the link below:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Regards, Joe
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Monday, February 10th, 2020 AT 11:33 PM
Tiny
KINGWAVY33
  • MEMBER
  • 3 POSTS
I'm trying to upload a video.
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Monday, February 10th, 2020 AT 11:37 PM
Tiny
KINGWAVY33
  • MEMBER
  • 3 POSTS
I guess it needed a subject sentence.
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Monday, February 10th, 2020 AT 11:37 PM
Tiny
JOETECHPRO
  • MECHANIC
  • 705 POSTS
Hey KINGWAVY33,

Can you please check for fault codes and let us know what you have?

If you turn the ignition on without starting all of the dash lights should come on to test for a few seconds.

Are you getting all of these lights flashing before it cuts out as in the video?

Sorry it is hard to tell from the video what is happening when it stalls.

Regards, Joe
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Tuesday, February 11th, 2020 AT 8:35 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Here is the correct way to run the codes:

https://www.2carpros.com/questions/1990-ls400-electrical-problem

Please run down this guide and report back.
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Wednesday, February 12th, 2020 AT 10:27 AM

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