GOT A FRESH 306 WITH AFR HEADS, 24LB INJECTORS, C&L 76MM MASS AIR TUBE, EDLEBROCK PERFORMER INTAKE, REED CAM WITH .580 LIFT, DRIVING DOWN THE ROAD JUST FINE BUT WHEN I COME TO A LIGHT OR A STOP IT JUST DIES AND THE ONLY WAY TO GET IT STARTED IS TO FLOOR THE GAS PEDAL AND SHUT OFF THE INJECTORS. ANY IDEAS PLEASE?
FRESHLY CONVERTED MASS AIR DYING QUESTIONS...
- Thread starter smgjmg
- Start date
GT Trooper
Member
88stangmangt
Active Member
drill a hole in the throttle body plate so it gets more air at idle that seems to work for those running bigger cams.
Dump the codes and see what the computer says is wrong…
Here's the link to dump the computer codes with only a jumper wire or paper clip and the check engine light, or test light or voltmeter. I’ve used it for years, and it works great.
See http://www.troublecodes.net/Ford/
OR
See http://www.dalidesign.com/hbook/eectest.html for more descriptive help
OR
See http://www.mustangworks.com/articles/electronics/eec-iv_codes.html
IF your car is an 88 stang, you'll have to use the test lamp or voltmeter method. There is no functional check engine light on the 88's except possibly the Cali Mass Air cars.
Look for codes 12,13 & 99 which are all idle related. Also look for codes 27 & 29 which are VSS codes. Post your results & I will try to get them sorted out for you.
Joe R.
Here's the link to dump the computer codes with only a jumper wire or paper clip and the check engine light, or test light or voltmeter. I’ve used it for years, and it works great.
See http://www.troublecodes.net/Ford/
OR
See http://www.dalidesign.com/hbook/eectest.html for more descriptive help
OR
See http://www.mustangworks.com/articles/electronics/eec-iv_codes.html
IF your car is an 88 stang, you'll have to use the test lamp or voltmeter method. There is no functional check engine light on the 88's except possibly the Cali Mass Air cars.
Look for codes 12,13 & 99 which are all idle related. Also look for codes 27 & 29 which are VSS codes. Post your results & I will try to get them sorted out for you.
Joe R.
saleenx029
New Member
BUT WHEN I COME TO A LIGHT OR A STOP IT JUST DIES AND THE ONLY WAY TO GET IT STARTED IS TO FLOOR THE GAS PEDAL AND SHUT OFF THE INJECTORS. ANY IDEAS PLEASE?
Floor the gas and shut off the injectors?
Floor the gas and shut off the injectors?
Juiced88Coupe
Founding Member
saleenx029 said:
I may be wrong but I have never heard that will "shut off" the injectors.
-Matt
Did you get any codes? If not, then the IAC (or IAB, same thing) isn't working. That's why the car doesn't idle when you come to a stop. Check & clean the electrical connections for it. Get some throttle body cleaner and remove the IAC and clean it up good.
Every part is brand new. The mass air conversion is new but shouldn't my idle change if the MAF sensor is unplugged. And is it possible to extract codes if you dont have a check engine light due to aftermarket gauges. And just so you know my name has changed to 88gtvertboy because I forgot the login info due to not posting in a while. Thanks for the ideas.jrichker said:
NYC LSC
Founding Member
Yes the idle should change when you unplug it.
Yes it's possible to get codes without a check engine light present - you can do it with a test light or analog volt meter. I don't have the link here at work, but I'm sure someone here has it.
Did you make sure to pull the vacuum line off of the MAP sensor and plug it?
Yes it's possible to get codes without a check engine light present - you can do it with a test light or analog volt meter. I don't have the link here at work, but I'm sure someone here has it.
Did you make sure to pull the vacuum line off of the MAP sensor and plug it?
I pulled the vaccum line and plugged it and left the rest exposed like the directions say in stangnet for converting sd to mass air. When it says to buy a harness do you actually have to, or can you make your own like I did with some bulk wire.NYC LSC said:Yes the idle should change when you unplug it.
Yes it's possible to get codes without a check engine light present - you can do it with a test light or analog volt meter. I don't have the link here at work, but I'm sure someone here has it.
Did you make sure to pull the vacuum line off of the MAP sensor and plug it?
Would it matter if I have a computer out of a automatic and my car is a manual?
88gtvertboy said:I pulled the vaccum line and plugged it and left the rest exposed like the directions say in stangnet for converting sd to mass air. When it says to buy a harness do you actually have to, or can you make your own like I did with some bulk wire.
I have personally run an A9P (auto trans computer) in a 5 speed car. It worked fine, no problems. Many of the guys here who have converted from AOD to 5 speed have done the same thing with no problems.
It goes along with a carb operation. During start mode, if the ECU senses WOT then it will think the engine is flooded so it cuts the injectors and allows all the incomeing air from the throttle plate being held all the way open to enter the engine, start easier, and get rid of all the standing fuel in the engine so that it will run again.Juiced88Coupe said:
Pretty cool concept if you ask me. That's why they say don't use the gas pedal to start an EFI car because it will think you are trying to clear a flood condition which will in turn make it harder to start because there is no excess fuel in the engine under normal starting conditions.
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