I need all you fox body experts in here i need help!!!!

[cobra_4]

Okay first here is a little background on my car. It's a 91 with a 347 stroker. It's still got the fuel injection on it. It's got an edelbrock intake and heads. 42lb injectors. It doesn't have any cats or O2's on it. Now here is what my car is doing.
Sometimes it runs perfectly smooth other than running a little rich. Other times it will hang at 2000 rpms and act like it wants to cut out when you give it gas. You have to turn the key on and off two or three times before it will start most of the time. It takes it forever to idle down when its cold. Today it's started a new habit I was going through the gears and when I hit third it died, just like you cut the switch off, then in about five seconds it picks back up. I know I need 02's. I've talked to rick at amazon about taking a look at it but is there anything you guys have experienced that might cause a case like this? I had trouble before with it dying all together and I had to stop and recrank it but it has stopped doing that. Help?

[SVTSkip]

The ECM is having fits since it cant see what the A/F ratio is. Since the car is on occasion rich it's exhibiting symptoms of a rich condition, but since it also can be lean in spots it's also doing what I've seen a car with a lean condition do. Get the O2's on there and see if the EEC can get things sorted out. BTW, after a recent major combo switch in my Coupe, I had a devil of a time getting the idle sorted out. I wound up using the IAC adjuster to solve things, and it really worked in my case even though it's so simple it's amazing ! Holler if you need more...

[nitrostangracin]

O2 Sensors are MANDATORY for an FI car. Without them the ECM gets no Fuel Data. The O2 Sensor is very simple. It reads Fuel Quality in the Exhaust. If it reads Rich, it tells the ECM to take some Fuel away. If it reads Lean, it adds some fuel.

Have them instalkled and then the car will need a Re-Tune for sure.

[Stable]

The number one thing is that it has to have the o2...as everyone has said, it is lost without them. After that you will need to look to the mass air, and make sure it is curved correct. If I can be of any help, drop me a line or give me a call

[FoxRodStang]

02's +2868683903

Unless the EEC is tuned to run without them, it won't run right until it gets a proper signal from them.

[Notch93]

02's +2868683903

Unless the EEC is tuned to run without them, it won't run right until it gets a proper signal from them.

X2 :yes1:

[cobra_4]

What is the best brand 02 to go with. I am gonna put an A/F gauge in it this winter so don't they work better with certain kinds?

[Stable]

Put the stock o2's in...If you run a gage you will need wideband O2's to get a good reading. Stock O2's are narrow band in that the give the computer back a signal that says either rich or lean. When the car is running correct the will cycle back and forth between rich and lean. The wide band setup's cost more than the narrow band gage. Autometer has a gage that runs off of the stock O2's. Why do you want to put a gage in? A/f changes very fast, and it is hard to watch it, unless it is going way one way or the other. Once the car is tuned, 99% of the time you will have no use for this gage. All cars run at a high A/F at idle and some at extended cruise......

[Notch93]

What is the best brand 02 to go with. I am gonna put an A/F gauge in it this winter so don't they work better with certain kinds?

Ford or Denzo.:yes1:

The FMS-M-12071-K302 kit is great for the $$$$.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=FMS%2DM%2D12071%2DK302&N=700+115&autoview=sku

[cobra_4]

Put the stock o2's in...If you run a gage you will need wideband O2's to get a good reading. Stock O2's are narrow band in that the give the computer back a signal that says either rich or lean. When the car is running correct the will cycle back and forth between rich and lean. The wide band setup's cost more than the narrow band gage. Autometer has a gage that runs off of the stock O2's. Why do you want to put a gage in? A/f changes very fast, and it is hard to watch it, unless it is going way one way or the other. Once the car is tuned, 99% of the time you will have no use for this gage. All cars run at a high A/F at idle and some at extended cruise......
Cause they look cool and I need a gauge to fill the pod:lol1:
Ford or Denzo.:yes1:

The FMS-M-12071-K302 kit is great for the $$$$.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=FMS%2DM%2D12071%2DK302&N=700+115&autoview=sku

Cool ill check it out.:thumbsup1:

[nitrostangracin]

02's +2868683903

Unless the EEC is tuned to run without them, it won't run right until it gets a proper signal from them.



Even with the EEC set to compensate it will really never run correctly without them. With no signal the Pulse Width needs to be really pushed of the Injector and then it can't compensate.

[87 vert]

i would use the factory o2 sensors. My old auto tech teacher said aftermarket o2 sensor react slower than O.E ones.

[nitrostangracin]

i would use the factory o2 sensors. My old auto tech teacher said aftermarket o2 sensor react slower than O.E ones.


True. Nothing like O.E.M Replacement parts.

[Notch93]

True. Nothing like O.E.M Replacement parts.


Thats why the kit I posted above is a great deal.:yes1: Thats what is on my car right now.:thumbsup1:

Plus Denzo makes the o2's for Ford now also.

[nitrostangracin]

Thats why the kit I posted above is a great deal.:yes1: Thats what is on my car right now.:thumbsup1:

Plus Denzo makes the o2's for Ford now also.


Difference is your thoughts don't count!

[Notch93]

Difference is your thoughts don't count!

You really want that rainbow screen name don't you.:yes1: :lol1::lol1:

[nitrostangracin]

You really want that rainbow screen name don't you.:yes1: :lol1::lol1:


http://lh6.ggpht.com/_3iElvOm1Dzk/R8OwiLKKCvI/AAAAAAAAANE/mMic_fyl67k/rainbow+wheelchair.jpg

[nitrostangracin]

Before you tell me about the Red X look at this!

http://lh3.ggpht.com/_3iElvOm1Dzk/R8uHPj-hVcI/AAAAAAAAAuM/eh-gfP6v1B8/rainbowwheelchair115.jpg

[nitrostangracin]

Another Red X. I give up! Time for some sleep.

[Notch93]

http://lh6.ggpht.com/_3iElvOm1Dzk/R8OwiLKKCvI/AAAAAAAAANE/mMic_fyl67k/rainbow+wheelchair.jpg

:lol4::lol4:

I just had a batch of these made up for you.:yes1::patriot:

http://blogs.salon.com/0003494/images/Gay%20Israel%20Flag.jpg

Lets not ruin his thread about his problem.:thumbsup1:

[XSR]

It sounds more like a bad fuel pump to me. Do you have a fuel pressure gauge on the car? I would check that, what makes me think this is the having to turn the key switch off and on a few times to get it to crank.

[bonesgt]

It sounds more like a bad fuel pump to me. Do you have a fuel pressure gauge on the car? I would check that, what makes me think this is the having to turn the key switch off and on a few times to get it to crank.

Or maybe could be relay going out also.

[Quinn]

It sounds more like a bad fuel pump to me. Do you have a fuel pressure gauge on the car? I would check that, what makes me think this is the having to turn the key switch off and on a few times to get it to crank.

same here, turn if off and back on and see if you can here the fuel pump kick on or open the gas cap and have sombody stick their ear to it and listen while you turn the key on:thumbsup1:

[cobra_4]

It sounds more like a bad fuel pump to me. Do you have a fuel pressure gauge on the car? I would check that, what makes me think this is the having to turn the key switch off and on a few times to get it to crank.

Or maybe could be relay going out also.

Well I'm thinking it may be fuel related. I just put a new pump in it over winter so hopefully that's not the problem. I do suspect something with the relay. I had trouble before with the ground on it. My mechanic slid the seat forward to drive it friday and then I slid it back. Same thing happened last time he drove it. I'm gonna start there. Before the fuel pump went out before it would take ten or fifteen times to crank it. Could there be something in the wiring causing it to go through fuel pumps?

[cobra_4]

I think it was the wire going to the relay. The connections felt a little loose but after I fixed them it is cranking on the first try and I drove it three or four miles out the road and it seems to be doing fine now.

[bonesgt]

I think it was the wire going to the relay. The connections felt a little loose but after I fixed them it is cranking on the first try and I drove it three or four miles out the road and it seems to be doing fine now.

Hope that was the problem, and you back on the road now

[SVTSkip]

If I'd seen the issue relating to the adjustment of the seat seeming to bring on the onset of the issue then I'd surely have recommended looking at the connections at the relay. Glad you got it sorted out ! :thumbsup1:

[cobra_4]

Hope that was the problem, and you back on the road now
Did I mention I got that **** fan working?

If I'd seen the issue relating to the adjustment of the seat seeming to bring on the onset of the issue then I'd surely have recommended looking at the connections at the relay. Glad you got it sorted out ! :thumbsup1:

Well I didn't really think about it at the time. Everyone that drives it is gonna be on the no moving my seat rule!

[Notch93]

Glad to hear it was an easy fix.:thumbsup1:

[Notch93]

If I'd seen the issue relating to the adjustment of the seat seeming to bring on the onset of the issue then I'd surely have recommended looking at the connections at the relay. Glad you got it sorted out ! :thumbsup1:

But what if the same situation happened to a 93?:dunno:

[SVTSkip]

Well I didn't really think about it at the time. Everyone that drives it is gonna be on the no moving my seat rule!

Now that you know what the problem is, you should be able to fix it so there wont be a problem no matter how the seat is adjusted...

But what if the same situation happened to a 93?:dunno:

The relay got moved for 93, so the issue shouldn't have been due to the same circumstance...

[Notch93]

The relay got moved for 93, so the issue shouldn't have been due to the same circumstance...


Just making sure you knew they put it under the hood in 93.:thumbsup1: