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I have a 2004 Silverado that has a lq4 with hci and a 100 shot of nitrous. I was messing with the intake a little bit and damaged one of the maf resistors by accident. Went and bought a new ac delco unit and truck bogs with black smoke at 4k rpm. Ran great with original maf. One thing I noticed was the resistor colors in the original one had blue ones and the new one had grey ones. Any help is greatly appreciated I really want to get this thing back on the road. Don’t mind the ghetto soldier on the one side I tried to see if I could soldier it back together.
maybe double check the part numbers? if a new MAF didn't fix the issue I would suspect other issues with the motor.
I appreciate the response. It ran great with the other maf I broke by accident though. If it had problems with the engine wouldn’t it be a present all the time?
So the car is tuned right, because you have a cam etc ? Black smoke means running heavy rich. I believe once you install a new MAF you have to get the car tuned again. I could be wrong but maybe talk to a tuner.
So the car is tuned right, because you have a cam etc ? Black smoke means running heavy rich. I believe once you install a new MAF you have to get the car tuned again. I could be wrong but maybe talk to a tuner.
Yes it was tuned by the mustang shop in Kent Wa. I really hope that’s not the case because they are out of business.
Yes it was tuned by the mustang shop in Kent Wa. I really hope that’s not the case because they are out of business.
that's no issue really, any good shop can tune it. do you have a handheld programmer ? I am fairly certain the car needs to be re-tuned because of the new MAF. In other words, your old broken MAF was specifically tuned for your cam. Now the car is dumping fuel and running rich. You could ask a performance shop or tuner, they will know what to do.
that's no issue really, any good shop can tune it. do you have a handheld programmer ? I am fairly certain the car needs to be re-tuned because of the new MAF. In other words, your old broken MAF was specifically tuned for your cam. Now the car is dumping fuel and running rich. You could ask a performance shop or tuner, they will know what to do.
I’ll ask around. Up here in Alaska theirs no reputable tuner from what I’ve gathered. I’m kinda wondering if the mustang shop put different resistors in this particular maf to read richer? I saw a post on here about something like that.
I’ll ask around. Up here in Alaska theirs no reputable tuner from what I’ve gathered. I’m kinda wondering if the mustang shop put different resistors in this particular maf to read richer? I saw a post on here about something like that.
the resistor idea is a possibility but who knows. If there are no tuners in your area, you could always get a mail order tune from a reputable company.
I’m gonna bring it to a computer repair store and see if they can soldier different resistors on the new one. Thank you for all the responses I’ll post if it fixed it or not.
I’m gonna have to wait until Monday for an electronic store to open. One thing I was wondering is if the c5 z06 maf runs leaner than the truck maf or if they’re the same?
I’m gonna have to wait until Monday for an electronic store to open. One thing I was wondering is if the c5 z06 maf runs leaner than the truck maf or if they’re the same?
the issue is, you have a custom motor, with cams, exhaust, heads, etc. Therefore, you can't use a "stock" MAF with calibration. The MAF that was broken , was probably tuned specifically for your current motor and cams. Therefore any "regular" MAF is not going to work well, without some tuning. So, you either A) fix the MAF that was broken or B) tune a new performance MAF for your motor at the dyno shop or have a custom tune emailed. The current mods will determine which MAF you need to purchase. I am not sure which one you need. Honestly at this point I would go with the second option. You can jack up a motor REAL fast if it isn't tuned right. And it sounds like you have a decently modded motor. You should also gather any receipts and lists of mods, so you can find out which MAF you need, and so your tuner knows what he is dealing with. It is very possible the MAF you are using is completely wrong for the mods that you have. JMO
the issue is, you have a custom motor, with cams, exhaust, heads, etc. Therefore, you can't use a "stock" MAF with calibration. The MAF that was broken , was probably tuned specifically for your current motor and cams. Therefore any "regular" MAF is not going to work well, without some tuning. So, you either A) fix the MAF that was broken or B) tune a new performance MAF for your motor at the dyno shop or have a custom tune emailed. The current mods will determine which MAF you need to purchase. I am not sure which one you need. Honestly at this point I would go with the second option. You can jack up a motor REAL fast if it isn't tuned right. And it sounds like you have a decently modded motor. You should also gather any receipts and lists of mods, so you can find out which MAF you need, and so your tuner knows what he is dealing with. It is very possible the MAF you are using is completely wrong for the mods that you have. JMO
Thank you slothman, I do highly appreciate it. I’m trying to get in contact with the original dyno tuner in regards to this. I’m not driving it until this gets resolved.
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04 Silverado Maf issues 
