ecu or maf ?

[absolute]

my car will run with the maf unhooked, in limp mode, cant get past 2500 3k, i hook the maf up it kicks in or engages, and run fine for 5-10 secs. after that it stumbles like hell and turns off. ?... ive tried several maf's they all do the same thing. ive tried grounding the maf, and it still doesn't work. so im kind of clueless and frustrated. need options kind of swiftly, cause im kind of pissed and close to scrapping the whole thing.

[DaydreamDrifter]

BUMP I need same info.

[hbrown]

Check your MAF wiring where it bends to go into the plug right at the sensor- mine was messed up there and was doing something similar to what you describe. The insulation was not broken on the wires- but the copper inside it was separated. I spliced on a new plug from a parts car and all was good.

[absolute]

well how about this?, if i put something over the maf "which i just tried", the car will run, but still wont rev over 3k, if i even blow into the maf it will cut off ?...i can try the new clip tommorrow cause i do have one but i am seriously about to sell the whole thing. i hope it works

[absolute]

i tried the new connectorplug, i even put a new harness on it. still it just starts every time stumbles and dies

[absolute]

a new computer was also tried please any other ideas?

[Us13]

holy **** mine does the same thing...and im feeling about the same way....if you fix it please..please email me at [email protected] does yours just bog down and die when it idles?this **** is very anoying!!!

[Z Style]

It would help if you told us when this started happening and how it ran prior to it doing this.

[Us13]

well mine started this morning and it ran decent before that. i just put a newer motor in it ma car has 113k miles. umm it smokes out the exhaust.last night i was shifting at 6 grand.

[absolute]

well mine is a swap. with the maf plugged in the car stumbles and dies everytime. unplug the maf and it doesnt die, but no fun. this is a whole different wiring harness, i tried another computer and maf from a working car. i rewired the second harnes cause i thought there were problems with the first one.

[deviousKA]

you must still have a wiring problem, what was wired incorrectly on the first harness?

[absolute]

well to my knowledge, there was only one wire that wasnt hooked up, which went to the maf, but that was because i had to wire the efi part of the harness the brown and grey plugs, but i got a harness that was complete, this time.

[deviousKA]

Did you check voltage at the maf connector? I dont know exactly what it should put out on the harness side, should be in fsm.

Your still using the sohc lower engine harness and fuse relay box? De harness plugs right in the grey and brown plugs by battery? I dont know much about full e-de oem efi swap, is this commonly what people use? Maybe your problem is in this part of the harness, again.

[absolute]

yeah i am still using the sohc lower engine harness, and fusebox. and yes the dohc plugs do plug directly into the sohc efi plugs brown and grey

[Frozen240]

Check the voltage to the MAF.

Should be 0.2 volts with the ignition ON

1.0-1.4 volts at idle, engine should be warmed up.

1.4-1.9 volts at 2000 rpm

Measure from the number one pin and a good ground. Hope this helps you out.

[absolute]

well the only problem with that is that the car wont stay on long enough to get a reading

[longjon009]

I asked if using a Megasquirt unit to solve the MAFS problems would help, but a guy said if i can't figure out a MAFS, than i won't be able to figure out a MS. I guess that means if you're smart enough though, it'll work.