Issues when flooring it at highway speeds

[Andy Woz]

I've noticed when really getting on it at around 65mph the engine light will flash and will not allow the car to go any faster. There is major pulsing in the front end, when you let off the gas it resets after about 15 seconds, any clue?

 

[Johnbigdog]

I've noticed when really getting on it at around 65mph the engine light will flash and will not allow the car to go any faster. There is major pulsing in the front end, when you let off the gas it resets after about 15 seconds, any clue?

You have a misfire that is/will be damaging the catalysts. That is what the flashing engine image indicates.

So, stop doing that and get it fixed sooner rather than later.

 

[SM105K]

Pretty much.

 

[Andy Woz]

You have a misfire that is/will be damaging the catalysts. That is what the flashing engine image indicates.

So, stop doing that and get it fixed sooner rather than later.

Thank you!!

 

[b4black]

Are you due for spark plugs? Gap widens and the spark can't jump the gap at high boost.

 

[rubydist]

Andy, in the future please do not post the same question in multiple sections.

 

[SHOdded]

Misfires (spark plugs/coils/injectors) or chafing knock sensor wires would be your most likely culprits.

 

[Andy Woz]

Andy, in the future please do not post the same question in multiple sections.

Sorry, first time using a Forum and didn't notice I was in the wrong section until after I posted, my apologies.

 

[Andy Woz]

Are you due for spark plugs? Gap widens and the spark can't jump the gap at high boost.

Got the car with 58k on it, now has 117k. I have never replaced them, not sure of previous owner did but I will look deeper into the plugs. Thank you!

 

[Andy Woz]

Misfires (spark plugs/coils/injectors) or chafing knock sensor wires would be your most likely culprits.

Thank you!

 

[luigisho]

Got the car with 58k on it, now has 117k. I have never replaced them, not sure of previous owner did but I will look deeper into the plugs. Thank you!

Yes. You are due or overdue for plug change and probably a variety of maintenance that should be done. Also there should be codes stored in the computer. You can pull them yourself or at the parts store. Good luck working in the winter weather up there. Yuk!

 

[Andy Woz]

Yes. You are due or overdue for plug change and probably a variety of maintenance that should be done. Also there should be codes stored in the computer. You can pull them yourself or at the parts store. Good luck working in the winter weather up there. Yuk!

Thank you, I'm going to tackle it this weekend, thankful for the heated garage