2005, check engine light slow blink then solid again after hard acceleration?

[zoldos]

My check engine light is always on since I have a vacuum problem in my gas tank. The mechanic said this wasn't critical. But the other day, I was accelerating pretty hard, and the check engine light changed to a slow blink for about 5 or 6 seconds, then turned solid again, and stayed thus for the rest of my trip.

What does this mean? Is it critical? I have the 2005 XLT Triton V8 model.

Thanks!

 

[Trainmaster]

You have a miss. When were your plugs last changed?

 

[Hamfisted]

What's the DTC code that's triggered your check engine light ?

 

[zoldos]

You have a miss. When were your plugs last changed?

I'm not sure honestly. I bought it used last May. It developed a miss soon after which I had fixed. So it's missing again? It did seem to sputter/hesitate when I tried to accelerate, but then ran fine....

 

[zoldos]

What's the DTC code that's triggered your check engine light ?

I have no idea. I don't have a reader.

 

[Hamfisted]

I have no idea. I don't have a reader.

A vehicle that old you will need a reader. Cheap investment that'll pay for itself.

BlueDriver Scan Tool Adapter on Amazon






.

 

[zoldos]

A vehicle that old you will need a reader. Cheap investment that'll pay for itself.

BlueDriver Scan Tool Adapter on Amazon.

For that price I can take to my mechanic and have it repaired. lol I am on a fixed income. Thanks for the info tho!

 

[brotherbeard]

Yeah definitely a misfire it flashes on and off and drives sluggish and when it stops misfiring assuming that it does the light will stop flashing if you replace the spark plugs yourself make sure you torque them down to specs the aluminum heads are notorious for blowing plugs out it’s the worst thing about them

 

[Trainmaster]

And stop running it with a miss. You'll mess up your converters. They cost a lot more than spark plugs.

 

[zoldos]

Yeah definitely a misfire it flashes on and off and drives sluggish and when it stops misfiring assuming that it does the light will stop flashing if you replace the spark plugs yourself make sure you torque them down to specs the aluminum heads are notorious for blowing plugs out it’s the worst thing about them

It slow blinked for like 5 seconds, then stopped, and it ran fine the whole time after (it had plenty of power, etc).