Got it. So on Rock Auto, it says the SP509s are for brown boots?

EDIT: Nevermind, understood

 

Just reviving this so I can perhaps gain some more insight.

I changed the plugs and boots but am still having what seems to be a misfire. Before the tuneup, the misfire seemed to be consistent at or around 45-50mph. Now, it seems to happen anywhere from accelerating around 30mph, on through 50 mph. When I get up to about 60 mph, it seems to run fine. Another thing I noticed is that once it does it for a period of time, maybe a couple minutes of driving, it goes away.

Is it possible that this could be a fuel issue? Maybe related to the fuel pump drive module?

Thank you for your help

 

did you pull codes? What were they?

 

When I started this thread, the shop I took it to was unable to pull anything during an inspection since the ECM had apparently reset. Since then, I’ve put a couple hundred miles on it so perhaps it could be good to now.

But from my previous understanding, until the ECM resets, it won’t be able to pull any codes.

 

do you have a code reader (sounds like you don’t, if not, I’d suggest getting one ASAP)?

i skimmed the thread, could be wrong, but from what you related about what mech said, I interpreted it to mean that (one or more) readiness tests were not passing. If so, I’m my experience, those are separate from codes, and have not precluded me from pulling diag codes this readiness tests were not “passed”.

Code readers are cheap and basically essential to have. Here is what I would do if I were you:

- pull codes
- if codes deal with them accordingly
- if no codes, then to test or debunk mechanics assertion of inability to throw codes), do something to purposely throw a code (coil, tpms, low fuel, etc), and watch for CEL/warnings, then pull codes again.
- if codes you can throw codes and reset them, you can rule out the ECM diagnosis

Will be curious to read what you learn/find

 

Good information, thank you.

Ill try and stop by AutoZone today and pick one up. What you are saying makes sense, so hopefully I’ll gain some ground on finding the issue.

And you are correct. Whatever needed to be “ready” for the inspection was not. But I misunderstood the affect of that regarding a diagnostic code.

 

So here is what I’m getting with the scanner. It’s saying no codes. Perhaps someone else here can help me better understand the rest

 

I wouldnt worry about the other tests until you find out if ecm is able to throw and reset codes.

Have you tried that yet?

 

the pics/post doesn’t make it clear if there were any codes (that you may have cleared), and/or whether you have tried manually creating codes and then cleared them?

 

So I tried deflating all tires to 15lbs and under, and also tried unplugging driver side front cylinder coil, and could not get TPMS light or the CEL to come on. With that said, the tire light has been coming on and off in the recent past with temperature fluctuations. But so far, I cannot get it to throw a code right now