1994 Cobra SPECS?

[chance04]

I just bought my 94 cobra and it seems to have a lunge around 2000 rpm. I bought the car with a broken valve spring and a bent valve so i never heard the car run correctly since I bought it. after fixing all of the above problems it still has this lunging problem, I can't run through town in anything less than two thousand rpm's and I can't use fifth gear unless i run about 70mph. The only thing I can see is that the previous owner has installed an 80mm mass air meter and a 65mm throttle body on a stock injector system. Does anyone know what the stock MAF and TB sizes are? And any suggestions?

Thanks

Just for reference I do know that the car has trick flow aluminum heads, an XE comp cam, msd 6al box, and blaster coil, the pro M 80mm MAF, and what appears to be an aftermarket 65mm TB.
Any help would be much appreciated

 

[chance04]

ttt

 

[bzubke1]

I had the same problem when i bought my 95. I changed the spark plugs and one of them was all gunked up. Put new ones in and it has ran good ever since.

 

[MARK C]

I just bought my 94 cobra and it seems to have a lunge around 2000 rpm. I bought the car with a broken valve spring and a bent valve so i never heard the car run correctly since I bought it. after fixing all of the above problems it still has this lunging problem, I can't run through town in anything less than two thousand rpm's and I can't use fifth gear unless i run about 70mph. The only thing I can see is that the previous owner has installed an 80mm mass air meter and a 65mm throttle body on a stock injector system. Does anyone know what the stock MAF and TB sizes are? And any suggestions?

Thanks

Just for reference I do know that the car has trick flow aluminum heads, an XE comp cam, msd 6al box, and blaster coil, the pro M 80mm MAF, and what appears to be an aftermarket 65mm TB.
Any help would be much appreciated

You had a 60mm t/body, on there stock. I don't know what size the stock mass air is. Sounds like the mass air you have is not set up for the injectors you have. Look @ the injectors, what color is the top of them?

 

[Midnight_Cobra]

I believe it was a 57mm throttle body when I measured it, and the MAF is 73mm if I remember correctly.

 

[Sellinger]

set of new plugs and wires, i had the same problem. Hopefully thats all thats wrong.

 

[Midnight_Cobra]

Plugs, Fuel Filter, cleaning the MAF. Probably the cheapest things you can do and usually makes a world of difference.

 

[chance04]

Plugs are brand new NGK's reccomended by trick flow, wires are 9mm ford motorsports, fuel filter hasn't been addressed yet but car doesn't seem to starve for fuel, guage tells me the car has about 35lbs or pressure at idle, and around 50lbs under full throttle. Mark C color of the injectors is blue and after a cross on google with the part number on them appear to be 24lb injectors

 

[STAMPEDE3]

How old are the wires?

 

[chance04]

For those of you that knew him I bought the car from strikensix
http://svtperformance.com/forums/member.php?u=41915
That is his profile and all the info I got about the car when I got it

 

[chance04]

Wires are about a month old

 

[Midnight_Cobra]

Do you have a PVOM. If so...turn the key to the "on" position but dont start the car. Test the TPS sensor to see if it has .97-.99volts then at WOT it should be around 5v or so.

 

[STAMPEDE3]

^^^^dvom

 

[Midnight_Cobra]

PVOM = Personal Volt (O) Meter.
DVOM = Digital Volt (O) Meter?

I've always called it a PVOM....maybe im just dumb.

 

[chance04]

Yeah I do have a meter, and I ran that test, if I can recall correctly I ran the test with the car off and test the resistance. I worked the throttle slowly and the resistance started quite high and smoothly transitioned down while I was looking for sudden spikes

 

[STAMPEDE3]

PVOM = Personal Volt (O) Meter.

LOL
Never heard that one.
DVOM= Digital Volt/OHM Meter.

 

[Midnight_Cobra]

LOL
Never heard that one.
DVOM= Digital Volt/OHM Meter.

Agree to Disagree I guess

 

[chance04]

I have also checked for any vacuum leak possible thinking maybe the MAP sensor was throing the car for a loop, but nothing

 

[Midnight_Cobra]

I have also checked for any vacuum leak possible

How did you do that, just listening?

 

[chance04]

How did you do that, just listening?

No, 2+2 gum cutter