URD MAF Calibrator Installed; Now Check Engine Light!!

i tried installing mine and got no throtle after installing. do u have the diagram still of the wiring u can post

 

Quick update:

I double-checked the Volant CAI system; checked the fittings, hoses, and the MAF sensor. Everything looked good; no leaks, loose fittings, clean MAF sensor, etc.

I'll be checking the wiring connections later this evening with a voltmeter.

Then lastly, if I'm still getting the CEL, I'll head back to the tuner and have him consult with URD.

 

Sounds like someone buggered up the wiring installing it.

 

Deleted.

 

I wasn't making any argument for Unichip. I agree they are worthless.

What I said:

 

^^^^ this

I have the MAF Cali and the URD CAI. My MAF Cali went in with no issues, but I had some solder/connection issues with the MAF sensor extension for the CAI that casued me all kinds of headaches until I realized that my soldering skills needed some work. I was throwing occasional rich MILs, that came down to bad MAF sensor signals getting to the ECU. I ended up re-soldering the MAF sensor extension a couple of times before I got it right.

I would recommend you re-solder the MAF lead on the Cali side and see if that helps. If not, then I would get a monitor capable of reading the fuel trims and/or the MAF signal itself and see if you do have bad MAF sensor signal coming through.

Keep in mind that theses sensor signals are very low amperage and can easily get degraded by a questionable solder.

 

Thanks for the advice! We're double-checking the wiring and connections tonight! Hopefully it's as easy as that.

Question: Would I have to get it re-tuned if in fact it is a connection/wiring issue? Or, should I be good to go?

 

I would get it redyno'ed if the wiring connections were at fault. It would've gave the ecu false information and wrong perimeters of the engine results.

 

That's what I was thinking!

Looks like either way, I'll have to get it re-dynoed/re-tuned!

Hopefully, this nightmare is over soon!

 

Update:

We rechecked the wiring/connections last night, and sure enough, the "VTA1" wire (connection "D" per URD instructions) was not making a connection. The connection was remade and confirmed by testing with a voltmeter.

I took the truck back to the tuner and he reloaded the previous map from the dyno-tune and made several adjustments. The truck is running fine now, however, there is still a CEL (most likely with the same fault code from before; P0101).

He told me to put about 100 miles on the truck and come back and he would check the fuel trims again. He said the ECU needs to "relearn" itself.

At this point, I'm extremely frustrated and about to remove the URD MAF calibrator and reconnect the ECU wires (like they were before) and just run the Volant CAI (without calibrating the MAF sensor).

This has been nothing short of a stressful and frustrating experience!

 

It is completely normal for the ECU to need to re learn, in fact any time you disconnect your battery for more than about 15 minutes the ECU goes " dumb " and needs to take some time to re learn everything. Again, the problem is not the URD device, it was installed poorly which triggered the CEL. A CEL for such a simple code is no big deal, remove face from palm, don't be mad, don't eek and no reason to be confused your ECU will get smart in about a day of normal driving.

 

Thanks for the reassurance! I definitely needed it!

 

I'd change the tuner before I change the URD calibrator but that's me

BTW the volant intake are known to throw CELs due to the design of the tubing.

 

OP, if you mod your truck, at some point some chit will happen, sucks to deal with, but if you mod, something eventually will bite you in the ass. But a couple more points.

o first, did the ecu get reset? If not, you will need to go through a drive cycle for the code to reset itself.
o i have read a few reports recently that urd's support is starting to get problematic. Starting to make me concerned about them. Not sure if this is temporary or permanent.
o urd had a Volant map, not sure why he is saying he doesn't have one now ??? Might post a thread asking if someone could forward you their volant map.
o if the ecu was reset and you threw the code again right away, good chance that it will stay with you. This could very well be the map that the tuner installed. If the code does not clear, you might try going to a stock/clear map and see if that helps or not. I would recommend getting a monitor, like a scanguage or ultraguage, to watch your fuel trims. If the code is being thrown you can at least see if the readings are transient, or consistently off.

 

I'm looking at different tuners in the area.

I haven't heard that about the Volant intakes; their design doesn't seem much different than TRD, AFE, or others.

 

OP, if you mod your truck, at some point some chit will happen, sucks to deal with, but if you mod, something eventually will bite you in the ass. But a couple more points.

o first, did the ecu get reset? If not, you will need to go through a drive cycle for the code to reset itself.

I'm currently going through a drive cycle; I've put on about 60 miles thus far.

o i have read a few reports recently that urd's support is starting to get problematic. Starting to make me concerned about them. Not sure if this is temporary or permanent.

o urd had a Volant map, not sure why he is saying he doesn't have one now ??? Might post a thread asking if someone could forward you their volant map.

I was told by Gadget that the new Volant intakes are designed slightly differently than the previous ones, and that's the reason URD does not have a map for the "newer" Volant intakes. Personally, I think they should invest in the time and energy to develop a map for the newer Volant intakes. It doesn't make sense as to why they wouldn't.

o if the ecu was reset and you threw the code again right away, good chance that it will stay with you. This could very well be the map that the tuner installed. If the code does not clear, you might try going to a stock/clear map and see if that helps or not. I would recommend getting a monitor, like a scanguage or ultraguage, to watch your fuel trims. If the code is being thrown you can at least see if the readings are transient, or consistently off.

I'm getting the Innova code reader today.

 

I would just reset the ecu and see if it comes back, also, ahh 2012, I should have looked, totally different cai then for the pre12s.

 

First, how do I reset the ECU? Secondly, would resetting the ECU delete the tuning map?

Thanks!

 

Remove the neg battery terminal for 15-20 minutes. The map will still be in the cali. You could also get your reader and reset the codes.

 

Is there "Still" a code, as in it came back, or did you just not delete the old code?

Just remember, it's not URD's fault. Back in the ol' days they did not have maps for anything. Also, their map is only going to get you close, a full tune will give you additional power.