im stuck...help...sputtering upon acceleration

bikerdave30 · 10-08-2008, 09:14 PM

i put a cold air intake on my 85' MR2 directly before my Mass Air Flow Sensor. now my car is sputtering upon acceleration. all of my vacuum lines are hooked up correctly. it is also running with an open header.

Ben · 10-08-2008, 09:28 PM

When you removed the MAF (if you did) did you unclip the wiring connector, or did you remove the screws?

bikerdave30 · 10-08-2008, 09:35 PM

i did.
but i put it all back the way it was

Timon · 10-08-2008, 09:49 PM

You did what? He asked a question that was one of two things. Did you remove the clip or did you remove the screws?

If you didn't remove the screws, ignore the following:

I'm going to assume you removed the screws. Basically that entire clip is very delicate. Once you remove the screws it breaks the solder points and/or jams the gauge for the AFM. What you'll need to do is remove the AFM from the vehicle, using a knife or other sharp object chizzle around the black top of the AFM, and pry it off - be careful not to do any further damage. After that you should see something similar to this,

.

(Label the terminals on the connector one through seven, with one being on the left hand side.)
If your vehicle continues to die and will not stay running, then look towards terminals 1 and 2. Terminal one is held up by the gauge for the meter when the vehicle is off (preventing a connection). When the vehicle is turned on the gauge moves to your right (looking directly down out the meter), which the flimsy rod on terminal one to connect with the rod on terminal two. This action simply turns on your fuel pump.

If your vehicle just sputters, but stays running look the the rest of the terminals and make sure all the wires have a connecting terminal. If you still can't get it to work, post a picture of the inside of your AFM up here.

When you're done playing with the AFM I'd advise you to seal it up like it was prior to being taken apart.

bikerdave30 · 10-08-2008, 10:00 PM

yes i took out the screws. thank-you i will get on that right now and get back to you in a bit
thanks once again

bikerdave30 · 10-09-2008, 12:27 AM

i dont know how to post a picture on here

bikerdave30 · 10-09-2008, 12:31 AM

foal0904 · 06-30-2011, 09:05 PM

there are those three similar connectors in the maf when you take off the cover. can you solder those back into possition with out damaging the board

arber0214 · 06-30-2011, 09:42 PM

Damn that thing is cool inside.
Now why would you take those screws off to install an air intake?

SW20MR2 · 06-30-2011, 10:16 PM

I almost fell this a while back too, i didnt realize it unclips. So long story short i was getting ready to unscrew it until for some odd reason i just decided enough was enough for the day. I'll get back to work tomorrow. Then i fired up the computer and saw some article about not removing the screws. Lol talk about a total coincidence......Unfortunately the afm was useless (left in the open by the previous owner for 13 years....dirt,grime, beehives, and everything else imaginable), so i ended up getting a new one from foy.

Oteck · 06-30-2011, 10:57 PM

^ we should have a poll on that lol

muffinman · 07-01-2011, 12:24 AM

Quote:

Originally Posted by Oteck

^ we should have a poll on that lol

A poll on what? Bumping really old threads?

Oteck · 07-01-2011, 12:35 AM

yanking the afm plug after unscrewing it :P

10-08-2008, 09:14 PM	#1 (permalink)
bikerdave30 No Skills Join Date: Oct 2008 Location: cincinnati Posts: 8 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	im stuck...help...sputtering upon acceleration i put a cold air intake on my 85' MR2 directly before my Mass Air Flow Sensor. now my car is sputtering upon acceleration. all of my vacuum lines are hooked up correctly. it is also running with an open header.

10-09-2008, 12:31 AM	#7 (permalink)
bikerdave30 No Skills Join Date: Oct 2008 Location: cincinnati Posts: 8 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Last edited by bikerdave30; 10-09-2008 at 11:51 AM..

06-30-2011, 09:05 PM	#8 (permalink)
foal0904 No Skills Join Date: Jun 2011 Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	questions there are those three similar connectors in the maf when you take off the cover. can you solder those back into possition with out damaging the board

06-30-2011, 10:57 PM	#11 (permalink)
Oteck Eye'm the Str⑨ngest Join Date: Aug 2005 Location: Burnaby B.C. Posts: 4,945 Thanks: 11 Thanked 172 Times in 157 Posts Blog Entries: 3 iTrader Rating: (5/100% )	^ we should have a poll on that lol __________________ [Oteck's] Project car Garage Pending Projects 1mz/3mz VVTI Hybrid V6 \| LS430 Big Brakes \| Rotary Climate Control \| Power steering Commander \| Power Tilt & Telescopic Steering Column \| Completed Projects Stainless Door Sills \| Power Folding Mirrors \| Motorized/Steering Fog lamps \| Pedal Conversion \| LED Gauges \| Lexus Door Cover \| Sway bar Relocation Tab \| RFID Push Start

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10-08-2008, 09:28 PM	#2 (permalink)
Ben Same In The End Join Date: Aug 2006 Location: Oceanside, CA / Reno, NV Posts: 4,274 Thanks: 20 Thanked 309 Times in 284 Posts My Google Map iTrader Rating: (16/100% )	When you removed the MAF (if you did) did you unclip the wiring connector, or did you remove the screws?

10-08-2008, 09:35 PM	#3 (permalink)
bikerdave30 No Skills Join Date: Oct 2008 Location: cincinnati Posts: 8 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	i did. but i put it all back the way it was

10-08-2008, 09:49 PM	#4 (permalink)
Timon MR2 MKI AW11 Join Date: Feb 2008 Location: Utah Posts: 669 Thanks: 13 Thanked 42 Times in 37 Posts My Google Map iTrader Rating: (1/100% )	You did what? He asked a question that was one of two things. Did you remove the clip or did you remove the screws? If you didn't remove the screws, ignore the following: I'm going to assume you removed the screws. Basically that entire clip is very delicate. Once you remove the screws it breaks the solder points and/or jams the gauge for the AFM. What you'll need to do is remove the AFM from the vehicle, using a knife or other sharp object chizzle around the black top of the AFM, and pry it off - be careful not to do any further damage. After that you should see something similar to this, . (Label the terminals on the connector one through seven, with one being on the left hand side.) If your vehicle continues to die and will not stay running, then look towards terminals 1 and 2. Terminal one is held up by the gauge for the meter when the vehicle is off (preventing a connection). When the vehicle is turned on the gauge moves to your right (looking directly down out the meter), which the flimsy rod on terminal one to connect with the rod on terminal two. This action simply turns on your fuel pump. If your vehicle just sputters, but stays running look the the rest of the terminals and make sure all the wires have a connecting terminal. If you still can't get it to work, post a picture of the inside of your AFM up here. When you're done playing with the AFM I'd advise you to seal it up like it was prior to being taken apart.

10-08-2008, 10:00 PM	#5 (permalink)
bikerdave30 No Skills Join Date: Oct 2008 Location: cincinnati Posts: 8 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	yes i took out the screws. thank-you i will get on that right now and get back to you in a bit thanks once again

10-09-2008, 12:27 AM	#6 (permalink)
bikerdave30 No Skills Join Date: Oct 2008 Location: cincinnati Posts: 8 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	i dont know how to post a picture on here

06-30-2011, 09:42 PM	#9 (permalink)
arber0214 OT people blew me hard Join Date: May 2006 Location: MA Posts: 2,820 Thanks: 11 Thanked 95 Times in 93 Posts My Google Map iTrader Rating: (5/100% )	Damn that thing is cool inside. Now why would you take those screws off to install an air intake?

06-30-2011, 10:16 PM	#10 (permalink)
SW20MR2 Not Running Since '97 -_- Join Date: Oct 2010 Location: Georgia Posts: 576 Thanks: 32 Thanked 10 Times in 9 Posts My Google Map iTrader Rating: (4/100% )	I almost fell this a while back too, i didnt realize it unclips. So long story short i was getting ready to unscrew it until for some odd reason i just decided enough was enough for the day. I'll get back to work tomorrow. Then i fired up the computer and saw some article about not removing the screws. Lol talk about a total coincidence......Unfortunately the afm was useless (left in the open by the previous owner for 13 years....dirt,grime, beehives, and everything else imaginable), so i ended up getting a new one from foy.

07-01-2011, 12:35 AM	#13 (permalink)
Oteck Eye'm the Str⑨ngest Join Date: Aug 2005 Location: Burnaby B.C. Posts: 4,945 Thanks: 11 Thanked 172 Times in 157 Posts Blog Entries: 3 iTrader Rating: (5/100% )	yanking the afm plug after unscrewing it :P