Cam Change = Firing Order Change= Injector Change

[Rjaaaaaa]

According to the e9zf part of the part number that MAF is for a stock mustang 5.0 with 19lb injectors. A stock MAF can't be tuned. The only way the stock ECU can be tuned is with an external chip that connects into the computer. There are a few different ones....

Without the MAF or chip the car won't run right.

If it ran with 42lb and the computer that's in it then it should run if everything that was in it was put back on.

That's exactly what I'm thinking, only thing difference is I changed to 24# injectors but it still should run ok.

 

[Mstng93SSP]

The maf housing has nothing to do with what the sample tube inside it (the electronic part inside) is calibraated for. If you were running 42 lb injectors, and you switched to 19, or 24s and did not change the sample tube inside the maf housing to match the new injector size that is the problem. The part number on the housing itself means nothing in this situation

 

[General karthief]

The pic he posted showed a c&l maf housing, as ya'll know they have sample tubes that are designed for specific injector sizes and uses the stock maf sensor, the tube design is what 'fools' the computer,
Std 19lb Calibration Clear Tube (101)
24lb Fuel Injectors Blue Tube (102)
30lb Fuel Injectors Red Tube (103)
36/38lb Fuel Injectors Green Tube (104
You can use the blue tube for 19lb injectors with no problems.
This was told to me by the people at c&l when I was working on my engine.
I am in favor of installing the 42's that where in there to see if that makes it run right, I say this because it was running with them befor the fire. I do think the 42s are kinda big but he said it ran good with them.
You never did confirm the distributor is a used one.

 

[vristang]

Get a new sample tube in that C&L meter.

no, the car should not and will not run fine if swapping 42's for 24's.

Get the right hardware and see how it runs...

 

[90sickfox]

Man....missed the c&l housing....don't know how I didn't recognize it. Should've known....its 70mm...dugh !!!

 

[Rjaaaaaa]

I borrowed a friend noid test set and all the injectors were firing great so the injectors passed their test and the dist. was working fine. I did find a bad injector connector on #2 and I replaced it. I also listened to each injector with a stethoscope and all the injectors were firing.
I didn't find the problem but I did eliminate a few possibilities.
I also pulled the upper intake off to replace the gaskets with new ones, I had used blue rtv without gaskets but I'm thinking this could be the noise I'm hearing so I had to order new gaskets.
I looked at the C & L maf housing and it doesn't have a color on the sample tube.
VRIstang I couldn't access your web site that showed the sample tube sizes. Could you tell me what the sizes are, mine looks to be about a 1/4"? What size is what color and what # injector goes with them.
So I'm just waiting now to get these gaskets so I can put it back together with new gaskets and see how it runs.
Four of the 42# injectors were melted in the fire so I ordered new 24# as replacements.
I think the maf sensor is ok since the motor falls on its face if I disconnect it.
So if the new gaskets don't make a big difference then it must be the eec.
anyone have a a9l for sale

The pic he posted showed a c&l maf housing, as ya'll know they have sample tubes that are designed for specific injector sizes and uses the stock maf sensor, the tube design is what 'fools' the computer,
Std 19lb Calibration Clear Tube (101)
24lb Fuel Injectors Blue Tube (102)
30lb Fuel Injectors Red Tube (103)
36/38lb Fuel Injectors Green Tube (104
You can use the blue tube for 19lb injectors with no problems.
This was told to me by the people at c&l when I was working on my engine.
I am in favor of installing the 42's that where in there to see if that makes it run right, I say this because it was running with them befor the fire. I do think the 42s are kinda big but he said it ran good with them.
You never did confirm the distributor is a used one.

 

[Mstng93SSP]

Ok,....one more time. The maf that is on the car is the one you had with 42 lb injectors. You put in 24 lb injectors but did not change the maf sensor or at least the sample tube to match the 24 lb injectors. Is this correct? If it is correct then no, your maf is NOT ok. I don't care if the motor falls on its face when you disconnect it, the maf sample tube MUST match the injector size. Call C&L right now, tell them you have C&L meter on a Foxbody 5.0 and need a 24 lb injectors sample tube. They will send you one for reasonable cost ($20-30 I think). When you get it you will see how simple it is to change. Please do this before you throw any more money at the car. EEC ain't cheap my friend and I don't think you need one.

 

[Rjaaaaaa]

Ok,....one more time. The maf that is on the car is the one you had with 42 lb injectors. You put in 24 lb injectors but did not change the maf sensor or at least the sample tube to match the 24 lb injectors. Is this correct? If it is correct then no, your maf is NOT ok. I don't care if the motor falls on its face when you disconnect it, the maf sample tube MUST match the injector size. Call C&L right now, tell them you have C&L meter on a Foxbody 5.0 and need a 24 lb injectors sample tube. They will send you one for reasonable cost ($20-30 I think). When you get it you will see how simple it is to change. Please do this before you throw any more money at the car. EEC ain't cheap my friend and I don't think you need one.

Yes your statement about the injectors is correct.
Currently I have 24# injectors in the car and they are all working.
I don't know what size the sample tube is (looks to be about 1/4"), I was hoping someone could tell me what the sizes are (diameter hole of hole not color).
I realize the one in there is probably to big but at least I know the the maf is working.
I can't find any sample tube under $60.
Thanks for your input.

 

[General karthief]

You can get a remanufactured eec for between $140 to 160 just be prepared for a $50 or $60 core charge.
I agree with 93ssp get the correct sample tube or do the 92-94 crown vic maf swap, it's about the same money.

 

[vristang]

I looked at the C & L maf housing and it doesn't have a color on the sample tube.
VRIstang I couldn't access your web site that showed the sample tube sizes. Could you tell me what the sizes are, mine looks to be about a 1/4"? What size is what color and what # injector goes with them.

Sadly, my site is gone, and I don't have that data elsewhere. I would suggest calling C&L. 10 minutes on the phone and you will have the right tube in the mail.
The color/size of sample tube depends on the ecu/injector combo being used.

Looks like C&L is no longer in business, but American Muscle still lists the meters.
http://www.americanmuscle.com/cnl-performance-mustang-parts.html
Give them a call.

I think the maf sensor is ok since the motor falls on its face if I disconnect it.
So if the new gaskets don't make a big difference then it must be the eec.
anyone have a a9l for sale

Sweet F'ing Jesus!!!

Fix the MAF calibration before you do anything else!!!!

 

[Rjaaaaaa]

opened a new thread about the c & l maf sample tubes just to try and get some new input and it worked. So my tube is not .250" as I stated but it's actually .550". This translates to a stock clear sample tube for 19# injectors.
So, right now I'm waiting for new upper intake gaskets. I'm not going to do anything else till I see what the gaskets do.

 

[Rjaaaaaa]

Well my gasket came yesterday and I put it all back together today. It most definitely had a vacuum leak before and the new gaskets seemed to have helped but it was still not running right.
So I decided to start looking at the mafs. I fooled around with some duct tape and covered a portion of the sample tube just to see what would happen. Mine was only .550 to begin with and as I covered just a small section at the front top of the sample tube the engine started to even out and idle better. So I found just the right amount that made the engine run better and it seemed to be like an 1/8" blocked off at the front top of the tube ??
I pulled the sample tube out and pushed some aluminum foil into the tube and then took some JB weld and filled the first 1/4" of the tube down about 1/8" and let it set up.
I then took the foil out and reshaped the top section of the tube with my dremel and used this as a starting point. When I reinstall the tube and mafs the car ran like a champ, I was stunned as to how little I changed the opening and how much of a difference it made.
Vristang I'm sorry I didn't put much weight on the mafs being that important but I'm a believer now.
I took the car out for a couple of test runs 10 -12 miles up the road and it ran good. I think it has to run a few miles after it's all been hooked up to settle down. It sure felt good to be able to run down the road again. YAHOOOOOO!!!
I did find where that high pitched sound was coming from, it's like a whistle and it's coming from the mafs? When I first got the car I never heard this noise, only since I have worked on it after the fire. The fire never got near the mafs so I don't know why it's whistling now, The mod I did didn't have much effect on the sound either. It is only present under acceleration ?? Sound is reduced with air filter in place.
Well thanks a lot all of you who have chimed in and tried to help, I'm still learning and that's what makes it interesting for me. I hope to enjoy the car for the rest of the summer now.
Thank
Ron

 

[Rjaaaaaa]

I'll keep you all posted in the future to see how well this all turns out.
I feel like the car is running stronger then before the fire and that's a GOOD thing.