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Now that i have the 5.3 to 6.0 swap done my motor is throwing codes.
It is throwing a MAF sensor code, Knock sensor code, and multiple cylinder misfire code. The motor seems to run fine, it just a tad bit rough at idle.
Is it throwing the codes because I have not had the PCM tuned for the 6.0 yet, or is this something that i should start to look into?
Also, is the proper spark plug gap for the 6.0 .060? I went by what the radiater cover said...
Tha plugs are AC Delco Iridium plugs.
Part #617922
41-985
Paid $6.99 a piece
Get your tune updated before you burn it up.
Something isn't right with that setup. Like Red said get that thing running right before you drive it anymore.
Ok, I sent COWl a PM to see if he would do a tune since he is so close(and i only pay cash). If not I will have Wheatley or Nelson do it.
I think it is much more than a tune. Why would the MAF code? What about the misfires? Fuel pressure? Pinched wire? Open or loose ground?
Tonight i cleaned the MAF, so hopefully that will solve one issue.
Next is the misfire. I did some research on here and supposedly the iridium plugs are supposed to be gapped at .040, but i gapped them to .060 because that is what GM called for. Should i close the gap back down to .040? Would that cause it to misfire?
And i know nothing about the knock sensor...
It all seem wierd to me because the motor runs fine, no weird noises, good oil pressure, starts and idles fine; it just a little rough at idle when warm.
Do i need to go back and clean all the sensor connections?
I would make sure all the connections are clean and solid. Make sure the bolts on the back of the engine that the grounds connect to are tight. Check the fuel pressure. Close the gap up a bit.
K. I will start on this tomorrow after i pick up come electrical connection cleaner. I am pretty sure the grounds on the back are tight, but i may need to scratch them up a little. Or possibly I put them on the wrong bolt...:newbie:Quote:
I would make sure all the connections are clean and solid. Make sure the bolts on the back of the engine that the grounds connect to are tight. Check the fuel pressure. Close the gap up a bit
Should i close the gap to .040?
I should probably have a fuel pressure guage anyways.
You need a tune. We swapped a buddys 4.8 to a 6.0 and his was kicking the same codes, the maf, knock sensor, and misfire codes. After the Np tune it fixed everything.
Ok thanks again for the help guys. You all have been a great help at answering all my uneducated questions...
Those plugs ARE NOT TO BE GAPPED. They are to be used as is out of the box. If one has a closed gap (visual inspection), take it back and exchange it. The 41-985 iridium plugs are replacements for the old school platinums and therefore have a different gap spec. Do not go by the gap on the label underhood. Not only are you running the wrong gap, you might have damaged the plugs.
MAF code could be caused by the mere increase in airflow due to cubic inches....but we need the code to know.
Misfire and knock sensor codes could be related. The new engine without a CKP relearn could be causing misfire and enough clatter to set a KS code....but we need the codes to know. Sound familiar?
You need a tune badly.
Just got back from a live tune with Dale. Motor runs great, and I love the power. To me it is fast, Dale was yawning in the passenger seat.:(
Thanks again Dale.
Your truck looks real nice. I would really like to see it run whenever you get it going. If you need help let me know, if anything it is a learning experience for me.
I plan on knocking the plugs down tomorrow if they look good.
Tys
sorry, havent seen that one??Quote:
Tys
Told Ya So
:LOL:
my trans hates me right now.:burnrubb: