Help mass airflow

**dsmnoob91** · 11-06-2011, 09:47 PM

I just finished making my car TT for the second time but it will only stay running with the mass airflow unplugged if u plug it in it runs like crap then stalls but with it un plugged it runs I don't have any vac leaks I checked over everything today... Any ideas

**RealMcCoy** · 11-06-2011, 09:52 PM

What engine harness and ECU are you running?

**dsmnoob91** · 11-06-2011, 10:05 PM

Jdm ecu and harness with 1 o2 sensor

**RealMcCoy** · 11-06-2011, 10:44 PM

Check for a missing or damaged fuel pump relay or fuel pump resistor... Pretty common symtom of not having any power to the fuel pump in resisted mode.

**x2xtreme360** · 11-06-2011, 10:44 PM

Are you logging at all? Do you have a MAF reading? Sounds like a bad MAF to me.

**dsmnoob91** · 11-07-2011, 12:53 AM

No I gotta get a logger and I have a new resistor pack how do I test my mass airflow?

**dsmnoob91** · 11-07-2011, 12:54 AM

Also on my rear precat I haven't put my egr block off plate on yet so that is open don't know of that would do anything or not

**MR2** · 11-07-2011, 01:31 AM

Rofl I know someone else with that issue

car literally runs fine with the MAF unplugged right? as in you can rev it to 5000+rpm and seems ok?

**dsmnoob91** · 11-07-2011, 01:59 AM

Yes that Is what mine is doing I can take it to 7k and it is good just runs really lean

**MR2** · 11-07-2011, 02:50 AM

ok, we have tried replacing the MAF, no fix, checked the spark plugs + leads...no problem

the guy who's car it is suspects PTU?

that or you could try checking the leads to your ECU maybe? from what I'm aware a few people have experienced it but no-one has found out why.

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