Loading up on fuel. [Archive] - SoutheasternFoxBodies.com Forums

Blacksheep

11-16-2008, 04:44 PM

Ok, well my car every now and then loads up and pops back. A prob. but nuttin to major. So yesterday, i got in my car, started it up, and it just started spiting and sputering for about 3 min. I look behind me (i was in my driveway) and there is a bunch of smoke, so i get out, and smell it, and it smells just like gas. So any way, i got it runing smooth again, so i left, about about 15 miles down the road, it did the same thing..... I was just cruzing, and all of the sudden i had NO power. Like i was slowing down with my foot on the gas, spitting and sputtering. Well i started runing fine again, so i drove it all night last night no more problems out of it. I went to my brothers apt to help them move, and on the way back, i was cruzing down the interstate about 70, and it started doing it again. Spitting and sputtering, so i got off the interstate, and took a back road just in case i had to get out, or it didnt correct it self. So it was doin that, well it started runing better, but still not 100%. So i stop, get out, make sure my mass air is not unpluged or nuttin like that, well the vacum line that goes into the throtle body, and the valve cover. So i pluged that in, no big deal. Well i started it back up, and it ran "fine" all the way home. So my question to yall is, what would be causeing this, why is my car loading up on fuel. I was thinking, Mass air, 02 sensors, pressure reg???? Am i missing anything?

Stable

11-16-2008, 08:20 PM

That line being off will cause the motor to move the fuel around a bunch. You are letting in un-metered air, and this causes the O2's problems

Silver91Hatch

11-16-2008, 08:35 PM

What coil are you running??? Sounds to me like its loosing spark, possible TFI module, stator in the dizzy, coil, wires, plugs, etc.

Blacksheep

11-16-2008, 09:30 PM

I have a MSD Blater coil. so i know that is good, I need to upgrade my wires, and cap to MSD also, just havent really had a chance to. One of my buddys thinks that the fuel pump might be goin out, so its not loadin up on fuel, its runnin to lean, But then i was like then why does it smell like somebody just dumped about 10 gallons of gas behind my car???

I think imma go down to justins tom, and get him to put my car on his lil code reader thing and see if it throws any. My check engine light aint on, but the bulb might be out of it... So i dont know bout that. Im just really getting tired of this. It makes my car look like s**t when people see it act like that, it makes it look like a POS, but its not. There is several things wrong with it, i just dont really wanna type all the stuff out. lol

SVTSkip

11-16-2008, 09:33 PM

Sounds more like fuel than spark to me. Look at the pump/regulator first...

Silver91Hatch

11-16-2008, 09:41 PM

Check fuel pressure. Have you replace the fuel filter lately?? I replace mine every 15K and it looks like mud on the inside. Does the CEL come on when you turn the key on? Either way burnt out or not it could have codes stored. They will run bad lean and the processor in turn starts dumping fuel to compensate but it shouldn't have a rick/lean at the same time concern unless the O2's are shot, ie. reads lean and dumps fuel, but it should do it all the time. Could be O2's, bad fuel pump, clogged filter, bad regulator, etc if its a fuel concern.

Blacksheep

11-16-2008, 09:49 PM

Well i think the pump is going out any way, cuz ever sence i bought the car, it has a stock pump in it (im assuming) and it sounds like a 255 with a BAP on it. Its LOUD. I think imma check the codes, im sure the 02's are bad. And the filter. The 2 easyest and cheapest things first, and if that dont fix the prob. o-well it prob needs both any way

SVTSkip

11-16-2008, 09:54 PM

Well then I guess if you're going to throw new O2's, new pump, and a new filter in it, that aught to narrow things down a bit LOL ! :thumbsup1:

Blacksheep

11-16-2008, 10:03 PM

yea im hoping so, its just if i put a new pump, gatta get a adjustible reg. Then a guage. ugh.......

Blacksheep

11-16-2008, 11:07 PM

Hey do yall think its cuz im running 89 in my car?? Should i step up to 93?

Notch93

11-17-2008, 12:32 AM

Hey do yall think its cuz im running 89 in my car?? Should i step up to 93?

NO!!!!! Do like you stated above, hook a scanner up and see if there any codes. Then go from there.

Blacksheep

11-17-2008, 01:23 AM

Will do, ill let yall know what codes it throws

Stable

11-17-2008, 07:49 AM

did I read it wrong, or did you have a vaccum leak, and after you replaced the hose, it ran fine?

Blacksheep

11-17-2008, 10:21 AM

did I read it wrong, or did you have a vaccum leak, and after you replaced the hose, it ran fine?

Yes i did have a vaccum leak, but im not fully convenced that is the reason why it is running the way it is. I dont think you understand when i say, it was really running like s--t.I had no power, the car was still "running" but thats only cuz i had my foot on the gas the whole time trying to help. Its like a 2 year old child, she throws a lil temper tantrum for a min or 2 then after that, she is still kinda pissy, but does what u want her to do. If the vaccum leak caused it, wouldnt it do it all the time??

NC STANG GUY

11-17-2008, 10:33 AM

You have any way to monitor fuel pressure while riding down the road?

Blacksheep

11-17-2008, 10:43 AM

not unless i get a guage with some line and just set it at the bottom of my wind sheild and ride down the road, but i hopefully thats gonna change soon, i wanna mount the guage on the cowl panel

Stable

11-17-2008, 11:25 AM

I have seen some very strage thing happen when that line is not on. Alot of the time it will run at a low rpm ok, and then crap out because the o2 are getting some bogus info. The motor is getting a lot more air than it think. This cause the cpu/pcm to dial the fuel trims around and then thing get out of range....did the water temp go up any?

Blacksheep

11-17-2008, 11:35 AM

you know, the water temp did go up. Sat night. didnt do it sun. But it did, i was kinda wondering about that. The hotest it gets is about the 2nd tick mark on the guage, but it got up about middle ways. Why did it do that?

Stable

11-17-2008, 11:52 AM

That line was cause the motor to be lean. At idle, the IAC might have closed down enough to make it idle ok....maybe..maybe not, but up at light load/part throttle everything went lean.This leak would not cause a verybad lean conditon, but just lean enough to get outside the adjustments of the computer. Now the o2's tried to bring it back, and that small of a leak that might have got close, but then at idle it would load up the plugs...load plugs can cause both rich and lean as the fuel in the head/exhaust can be not burned and this will cause bogus readings. check the plugs to see if they have been "rich", black around the threads

Blacksheep

11-17-2008, 06:08 PM

OK, well justin didnt have time to check the codes today, so i went to auto zone and they had this lil thing that beeped?????? he said it was a A/C code, and a Smog related code, but im gonna get justin to put it on his, cuz it will show u the numbers. Didnt have a chance to pull the plugs today, but first thing tom i will

Badass1993

11-17-2008, 06:30 PM

I agree with Stable is part......I think with the breather line unhooked like it was,instead of it pulling air in,maybe it was loosing the metered air out of the throttle body......thus dumping fuel in,for the air that it metered........In theory,It is not supposed to do that,but I have seen some stangs that will do just that......This same thing occours if the EGR diaghpram pops off its seat......Depending on your plugs,that you are running...they may be fouled....

Blacksheep

11-17-2008, 06:33 PM

Im just runin good ol auto lite 25's

Blacksheep

11-17-2008, 06:35 PM

Well i think it would be really sweet if that was causing it. And only that. But i still think something is wrong with it. it pops back some times, Like if im in 5th, and goin about 55, and i just stab it. it pops sometimes. i think i just need to take it to Travis and have him tune it..... Kinda pricey though

Notch93

11-17-2008, 06:55 PM

i think i just need to take it to Travis and have him tune it..... Kinda pricey though

You don't need a tune, you need to find out what has or is going bad and fix it.

Blacksheep

11-17-2008, 07:08 PM

You don't need a tune, you need to find out what has or is going bad and fix it.

Yea i know, im just gettiin tired of it doin this:fluch::headbang::fluch::cussing::cussing::cus sing::cussing:

i wanna fix it my self, but sometime it just seems easier to let him do it and be done with it.:headscratch:

Grrrr

Badass1993

11-17-2008, 07:24 PM

Im just runin good ol auto lite 25's

they are probally shot.....never had any luck out of autolites,holding up to lots of fuel

Blacksheep

11-17-2008, 09:09 PM

prob, imma pull them tom and see

Stable

11-18-2008, 07:07 PM

pull the plugs, and close down the gap.....and check the timing.....

Blacksheep

11-20-2008, 08:59 PM

OK, got the car on the code reader today, it only showed one code that im concerned about, it said the MAF has low voltage, but we (me and justin) thinks its cuz the MAF wasent pluged all the way in. I checked a few of the plugs, and they look fine. So, im think vacum lines, the ones on the passenger side bolted to the strut tower, Those to small round lookin things...... Hell i dont know, i reckon i can start there......

Silver91Hatch

11-20-2008, 09:17 PM

Make sure the MAF has a good connection 24/7. An intermittent short/open in the MAF connection can make 100 million different things happen.

Notch93

11-20-2008, 09:27 PM

Silver91Hatch

11-20-2008, 09:36 PM

I see this all the time at work on cop cars. Some how the get flower pedals and spider webs on the hot wire inside the MAF. See if you have any stuff on the 2 wires inside the MAF.

redtang93

11-20-2008, 09:58 PM

hey you guys gotta tell me how to check codes on the fox body i did not know you could check codes on obd 1 stuff. so how do you do it. If yall don't won't to post it send me a pm thanks

Silver91Hatch

11-20-2008, 10:08 PM

Buy a $20 code reader or do like I did and bought a Snap On MT2500 for around $2000 and now I can pull codes on anything.

Blacksheep

11-20-2008, 10:12 PM

hey you guys gotta tell me how to check codes on the fox body i did not know you could check codes on obd 1 stuff. so how do you do it. If yall don't won't to post it send me a pm thanks

There are 2 plugs under your hood diver side, between the strut tower and the fire wall. Plug in there, and just follow the directions on the code reader

Blacksheep

11-20-2008, 10:16 PM

I have a stock MAF you can have if needed.:yes1: You are experiencing the same symptoms before the stock MAF went on my 93.

Clear the codes, drive it for a few days, then see if the code for the MAF re appears. If it does, then the MAF is going south.

Well how much would it be to ship it to 29070? Cant be much. pm me and let me know.

Im starting to think it is the MAF, the car just aint runnin rite. Its very sluggish and eveybody is like thats just a stock 5.0, but i know my car. My car had more than this when i bought it. there is deff something wrong with, I think imma change the MAF and 02's and see what that does

Notch93

11-20-2008, 10:30 PM

Well how much would it be to ship it to 29070? Cant be much. pm me and let me know.

PM me your address and I'll send it to you. Or do you live close by one of the members coming up Saturday for the show at Hendrick's? If so I can give it to one of them, to give to you. Just let me know, I will do either for you.:thumbsup1:

LMS has Motorcraft O2's for $50.00 a piece.

http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=DY606%20%20%20%20%20%20%2 0%20%20%201&comp=LRS

Blacksheep

11-20-2008, 10:56 PM

I was just thinking about gettin the Bosch ones from auto zone.

PM sent

Notch93

11-20-2008, 11:03 PM

I was just thinking about gettin the Bosch ones from auto zone.

PM sent

They will work. I just like running all OEM sensors.

And PM sent back.

Blacksheep

11-20-2008, 11:14 PM

well are the OEM "better" or what? ive always thought they were the same thing.

Silver91Hatch

11-20-2008, 11:20 PM

This is the one and only time that aftermarket is as good as OEM. I installed a new O2 sensor at work today and it says "Bosch" on the side. ANYTHING ELSE, go with OEM!!

Notch93

11-20-2008, 11:25 PM

well are the OEM "better" or what? ive always thought they were the same thing.

I'm not going to say that either is better or not.

I have been told by many that work at Ford (right or wrong) to stay away from the larger diameter ones like Bosch.

http://www.oxygensensorwholesale.com/catalog/images/prodimage/images/WORLDPAC/W01331619630BOS.JPG

And stick with the smaller diameter ones, like the Denso's, which make the O2's for Ford now.

http://www.oxygensensorwholesale.com/catalog/images/prodimage/images/denso/2344610.jpg

Notch93

11-20-2008, 11:29 PM

This is the one and only time that aftermarket is as good as OEM. I installed a new O2 sensor at work today and it says "Bosch" on the side. ANYTHING ELSE, go with OEM!!

The Motorcraft ones I put in my car about 6 months ago were made by Denso. The stock 93 ones were the smaller diameter ones also, just like the Denso's. The Bosch's are fatter in diameter.

Silver91Hatch

11-20-2008, 11:33 PM

Bosch makes Ford's newer sensors. Anything 04 up so far has been Bosch. Your right the 03 down have been the thin sensors. They do seem to last longer. Never seen a bad then style sensor without coolant on it.

Blacksheep

11-21-2008, 12:00 AM

So is that the only diff in the two? just the diameter? Wonder why the smaller ones are "better" or "worse" than the thick ones. If there is a differance in the way they work...

Silver91Hatch

11-21-2008, 06:08 AM

I can't say why one is better than the other, but the denzo's are what I have in my car as of right now. They are the thin bodied sensors.

SVTSkip

11-22-2008, 06:23 AM

hey you guys gotta tell me how to check codes on the fox body i did not know you could check codes on obd 1 stuff. so how do you do it. If yall don't won't to post it send me a pm thanks

You can even pull the codes in a Fox with a paperclip. Seen that done back before the code scanners for the EEC IV became so cheap...

well are the OEM "better" or what? ive always thought they were the same thing.

No difference in quality that I've ever experienced...

I'm not going to say that either is better or not.

I have been told by many that work at Ford (right or wrong) to stay away from the larger diameter ones like Bosch.

I worked for Ford, and even while I was there had no issues at all with using the Bosch units in both my Stang, as well as customers cars. Nothing wrong with sticking with OEM, but I wouldn't be afraid of the Bosch units either...

david80

11-22-2008, 08:27 PM

Blacksheep

12-01-2008, 07:08 PM

OK, so i got the new MAF (thanks eric) and installed it and took it down the road, and yea its running alot better. Its still not 100% but yea, deff better. So imma try and get some 02's and see if that dont help even more. thanks everybody for yalls help on this

Silver91Hatch

12-01-2008, 07:30 PM

Anytime man, let us know how it turns out!!

Stable

12-01-2008, 07:43 PM

Just make sure to unplug your battery for 10 minutes or so to clear the long term fuel trims...

Notch93

12-02-2008, 12:23 AM

Did you do like Mark said and unplug the battery when you changed the MAF?

SVTSkip

12-02-2008, 01:10 AM

Just make sure to unplug your battery for 10 minutes or so to clear the long term fuel trims...

Also a good idea to depress the brake pedal as well while it's deisconnected, as this will allow the ECM to dump any stored memory in that can be kept alive even with the power removed...

Blacksheep

12-02-2008, 10:50 AM

Just make sure to unplug your battery for 10 minutes or so to clear the long term fuel trims...

Huh? whats that do?

Did you do like Mark said and unplug the battery when you changed the MAF?

Nope but im assuming im supose to do that, so ill go do that.

Also a good idea to depress the brake pedal as well while it's deisconnected, as this will allow the ECM to dump any stored memory in that can be kept alive even with the power removed...

Will do as well

I dont think yall understand how big of a bish it is to get my radio all tuned rite, lol, but hey if it gets my car running better then i think i can deal with it. lol Thanks guys :thumbsup1: