2004 Marauder Aluminator crate engine with Trilogy #211‏

[torotoy]

My Marauder has an obvious ignition miss but it’s not throwing any codes.
IM thinking to return Lidio’s tune to stock thinking I could then see the codes (I believe the tune is keeping the ECM from data logging errors).
Then after seeing the codes I could see why it’s missing and fix it, then return it back to Lidio’s tune.
Am I on the right track?
Does his tune prevent the ECM from showing codes?
This ford racing Aluminator crate engine with Trilogy #211 was installed in 2009 is my daily driver and has never thrown any codes and has run perfectly up to now.

[RubberCtyRauder]

I don't think it will run on a stock tune as the trilogy is not stock. It needs to run a tune for a supercharger, not N/A. It sounds like a possible bad COP if it is missing. I would try a code scanner anyway, sometimes codes don't show up as check engine until a couple drive cycles.

[justbob]

Switching the tune back to stock will surely set some codes. Just probably not the ones your looking for..


Builder Of Badassery

[Mr. Man]

What RCR said or perhaps a vacuum leak.

[Mike D Mechanic]

i'm NA had random miss no codes reset tune to stock thinking same way still no codes long story short changed out coils miss gone just my 1 cent

[jwibbity]

Switching the tune back to stock will surely set some codes. Just probably not the ones your looking for..


Builder Of Badassery

*jedi hand wave* .......these are not the codes you're looking for........



:lol: :lol:

[justbob]

*jedi hand wave* .......these are not the codes you're looking for........



:lol: :lol:


Like. [emoji5]️


Builder Of Badassery

[Zack]

The easiest way to check for a bad coil is to go WOT from a standing start, up to about 90mph.
That gives the PCM enough time to detect a solid miss and it will flash the check engine light rapidly, then leave you with a stored code

[Logizyme]

^ I'm not finding that funny.

Find a OBD2 tool that can check mode 06 data and see if there are any cylinders which have detected excessive misfire - mode 06 will collect much data on misfires long before it sets a check engine light, especially when the misfire is occurring only off of idle. Also with a more advanced scan tool you can use a power balance datalogger and drive the vehicle while reproducing the problem to visually see the output of each cylinder to confirm the location of the miss.

Once the cylinder location of the misfire has been determined, diagnosing the faulty part comes next, most frequently misfire is cause by lack of ignition, so removing the spark plug from the affected cylinder, inspecting it, then installing it in another cylinder, as well as swapping the ignition coil to a different cylinder will aid in determining if either is the problem. reperform the tests with the suspect components in the different locations and see if the misfire has moved, if so it will have moved with the faulty component.

Just to be clear here, what makes you sure you are experiencing a misfire? Often torque converter or transmission shudder can manifest itself to feel just like a misfire and will result in no check engine light and no codes - just something to consider.

[torotoy]

Thank you
We used a OBD2 and it passed no errors, maybe it is the trans. No vac leaks.
It is bad like runnin on 6 or 7 cly until you get up to speed its pretty bad.
We will ck it out thanks

[mcb26]

bad coil. I have replaced 4 so far and never got a code.

[Zack]

The easiest way to check for a bad coil is to go WOT from a standing start, up to about 90mph.
That gives the PCM enough time to detect a solid miss and it will flash the check engine light rapidly, then leave you with a stored code


THIS

^ I'm not finding that funny.

Find a OBD2 tool that can check mode 06 data and see if there are any cylinders which have detected excessive misfire - mode 06 will collect much data on misfires long before it sets a check engine light, especially when the misfire is occurring only off of idle. Also with a more advanced scan tool you can use a power balance datalogger and drive the vehicle while reproducing the problem to visually see the output of each cylinder to confirm the location of the miss.

Once the cylinder location of the misfire has been determined, diagnosing the faulty part comes next, most frequently misfire is cause by lack of ignition, so removing the spark plug from the affected cylinder, inspecting it, then installing it in another cylinder, as well as swapping the ignition coil to a different cylinder will aid in determining if either is the problem. reperform the tests with the suspect components in the different locations and see if the misfire has moved, if so it will have moved with the faulty component.

Just to be clear here, what makes you sure you are experiencing a misfire? Often torque converter or transmission shudder can manifest itself to feel just like a misfire and will result in no check engine light and no codes - just something to consider.

Probably not this

Thank you
We used a OBD2 and it passed no errors, maybe it is the trans. No vac leaks.
It is bad like runnin on 6 or 7 cly until you get up to speed its pretty bad.
We will ck it out thanks

See what Zack said at the top.

LMMFAO @ "I'm not finding that funny"
Yeah, why would anyone with a crate engine and supercharger want to do a simple 0-90 run that takes 10 seconds and immediately spits out a coil code if they are bad...
Clown

[justbob]

THIS





Probably not this





See what Zack said at the top.



LMMFAO @ "I'm not finding that funny"

Yeah, why would anyone with a crate engine and supercharger want to do a simple 0-90 run that takes 10 seconds and immediately spits out a coil code if they are bad...

Clown


Laughing over here!


And yes, this works quite well... But more like 11sec for me.


Builder Of Badassery

[JohnE]

If it is a real problem with one cylinder in particular, then unplugging that injector will find it. I would start with looking at all of the spark plugs first. If they have any age on them, simply put new ones in just because. Also look at all of the spark plug coil spring connectors. Look for corrosion where they are clipped into the coils. If in doubt, change them.

I would never WOT a poorly running supercharged engine to 90mph. Not unless you really want to risk blowing it up. Why abuse it? Proper careful troubleshooting to find the root cause is the best thing to do. If its out of your abilities, get qualified help.

[MMBLUE]

Water or condensation under COP covers in plug wells will cause this. Ask me how I know?

[VMARAUDER]

Maybe re-gap the plugs?????