1G Won't run with MAF plugged in?

[diamondsm]

ok so i have been having this issue for a couple weeks now i have done everything...

the issue: the car will not idle i can give it gas and by pumping the throttle i can get it to stay running but if i let off the gas it dies?? but here is a twist if i unplug the MAF it will idle it runs like shit and is very laggy but will still idle??

here is what i have done:
boost leak lest
replaced MPI transistor
tested the ISC
i have spark and fuel
replaced the ecu
deleted the vacuum lines everything is correct
tested the CAS
its in time
swapped out the MAF

My questions??
why would it idle with the MAF unplugged??

i have two female plugs coming off my wiring harness they are purple with black shell one is kinda long the other is basically just a plug on the harness??

my knock sensor has no were to go to it looks like it would fit in one of the female plugs but it won't??

when i unplug my MAF with they key in the on position i can hear my ISC click like its moving??

 

[Mello]

Your grammar suck. You need to fix it and use correct grammar on this forum (rule#7). Most likely your MAF has failed. Try finding one that you know is good and swap it and see if this fixes your problem. Probably the reason why your car idles when you unplug your MAF is the disconnect forces the ECU into limp mode which makes it run like you're describing.

 

[Tiki2777]

You have a bad MAF sensor. If you have it unplugged, your car will run like crap, and if you have a bad MAF it will run worse if at all. Sometimes people try to hack up the honecomb in the MAF to get better flow and damage it.

 

[diamondsm]

Your grammar suck. You need to fix it and use correct grammar on this forum (rule#7). Most likely your MAF has failed. Try finding one that you know is good and swap it and see if this fixes your problem. Probably the reason why your car idles when you unplug your MAF is the disconnect forces the ECU into limp mode which makes it run like you're describing.

have already swapped a known good MAF

You have a bad MAF sensor. If you have it unplugged, your car will run like crap, and if you have a bad MAF it will run worse if at all. Sometimes people try to hack up the honecomb in the MAF to get better flow and damage it.

both of the maf's i used are in good shape the car has a fresh rebuild 0 miles

 

[Tiki2777]

I see your upgrades include an MSD ignition, did you do this mod yourself? Did you tune the MSD ignition correctly?

 

[Dvcaptainm]

I had this issue and thought it was my MAF, turned out that the pins in the connector has gunk all over them cleaned it and fixed the issue.

 

[diamondsm]

I see your upgrades include an MSD ignition, did you do this mod yourself? Did you tune the MSD ignition correctly?

that's another one of my cars

 

[LOLVTEC]

Just upgrade to a gm maf and maft. or go with link and sd life gets a lot easier.