car skips?

[strokedlx]

my 91 lx sometimes runs fine then out of no where it starts kinda skipping or like a miss and i can smell raw gas. and the check engine light will come on and it runs fine again. does anyone know what that might be? thanks Brian

[Notch93]

Check the codes, and see what code is being thrown. It could be a few different things.

[strokedlx]

the check engine light comeon again but no code. so i reset the computer. and so far its running fine. but the engine light still comes on. dont know?

[Notch93]

the check engine light comeon again but no code. so i reset the computer. and so far its running fine. but the engine light still comes on. dont know?

You hooked a scanner up and no codes were shown/stored?

[Silver91Hatch]

If the CEL(Check Engine Light) is on there are codes stored in the PCM. Unless you have a shorted wire between the PCM and the light, doubt it.

[puttputt]

Sounds like your antenna filter is clogged up.LMAO:lol1:

[Wayne's 88 GT]

when the CEL is on you'll need to hook a scanner up and read the codes...........could be a few things.....mass airflow sensor, coolant temp sensor......and some other things as well.

[Silver91Hatch]

Tune-up, fuel filter, fuel pump, TFI module, stator, etc... Hard to tell with out codes.

[SVTSkip]

If you dont have access to a scanner to pull the codes, then go to a local parts store. They can pull the codes for youfor free. Then we'll be able to point you in the right direction...

[strokedlx]

i have a little hand held one

[Notch93]

i have a little hand held one

Thats all you need. It still didn't have any stored codes?

[Sphinxmunkey]

And if your little reader can't do it (obd 1 or 2?),

I do it the old skool way

http://sbftech.com/index.php/topic,2471.0.html

lol :)

[strokedlx]

gonna scan it tonight. hope i can find out whats wrong with this turd

[SVTSkip]

Once you get the code numbers from it, we can give you an idea of what needs to be done...

[Wayne's 88 GT]

And if your little reader can't do it (obd 1 or 2?),

I do it the old skool way

http://sbftech.com/index.php/topic,2471.0.html

lol :)

Foxbody Mustangs are all OBD 1......

[Sphinxmunkey]

Foxbody Mustangs are all OBD 1......

That's precisely the point, reader I have is obd 2, have to do the mustang the old skool way since its obd 1... :)

Any codes thrown stroked?

[strokedlx]

still no codes. could it be the egr making it run rich and rough?

[SVTSkip]

If you dont have a scanner for it, take it to the parts store. they will read the codes for you for free...

[1sxyfox]

none of the parts stores can read them cause all they have are obd 2 scanners they don't use the 1's anymore you have to buy your own if you want to scan it.

[Notch93]

none of the parts stores can read them cause all they have are obd 2 scanners they don't use the 1's anymore you have to buy your own if you want to scan it.

You don't need a scanner to run the test. Makes it easier, but can be done without a scanner.

http://fordfuelinjection.com/?p=13

[1sxyfox]

ya i know you don't need a scanner i was just sayin everyone was tellin him to take it to the parts store to get it scanned and i was just sayin they don't use the obd 1 scanners at the store anymore.

[Notch93]

ya i know you don't need a scanner i was just sayin everyone was tellin him to take it to the parts store to get it scanned and i was just sayin they don't use the obd 1 scanners at the store anymore.

But the scanners they use will (can) still read OBDI. Not just OBDII.

[1sxyfox]

******* told me they couldn't scan my car at the store cause they didn't have the scanner to do it with but i could buy my own if i wanted to scan it.

[strokedlx]

ok its shows a 67 32 41 ?

[1sxyfox]

32-EVP circuit has intermittently failed below minimum voltage of 0.24 volts.
41-HEGO sensor circuit indicates system lean (right side). or No HEGO switching detected always lean (right side).
67-Neutral safety circuit failure. or A/C circuit was on during KOER Self-Test.

[Notch93]

ok its shows a 67 32 41 ?

Sounds like the MAF might be going bad.

[strokedlx]

and what does that mean?

[Notch93]

What meter are you running (injector size)?

[strokedlx]

stock 19lb

[Notch93]

stock 19lb

Find someone who has a stock meter laying around (or is willing to let you try theirs), and swap it out and see if that takes care of the problem.

[strokedlx]

ok i'll make some phone calls. thanks.this sh*t will give you a headache

[1sxyfox]

well if you need a good one that works and that is your problem i got a stock one that works great that i'll sell.

[strokedlx]

how much?

[strokedlx]

with those codes is that what it sounds like?

[Notch93]

If it is the meter, I also will have a 75mm ProM for 19lb injectors coming off my car next week.

See if you can find someone local, that will let you try one, before buying one though.

[Notch93]

Actually after thinking about this, the EVP is the sensor on top of the EGR valve. Thats what happens when you don't get any sleep.:lol1: Sorry for the brain fart.:yes1:

http://fordfuelinjection.com/index.php?p=35

I would start there, before the MAF.

[1sxyfox]

ya i would def start there, and if it is the mass air, then i would take 40 plus shipping.

[strokedlx]

ok i'll let you know if that is what it is. would it hurt yo take the egr valve off the car?

[1sxyfox]

just replace it,i don't think they are very much.

[slonomo]

Sounds to me like the egr solenoid .Its on the pass front strut tower,If tou have a haynes manual look in emissions sec 6-4.
I had the same problem ,swapped one out of one of my parts cars and it stopped.

[1sxyfox]

i lied about the codes my fault, i got those off the web site posted now after i got off my lazy but and lookin at the manual, a code 32 is - canister or EGR valve control system, a code 42 is- fuel mixture lean, and a code 67 is- air conditioner clutch switch circuit

[Notch93]

i lied about the codes my fault, i got those off the web site posted now after i got off my lazy but and lookin at the manual, a code 32 is - canister or EGR valve control system, a code 42 is- fuel mixture lean, and a code 67 is- air conditioner clutch switch circuit

This is the best place to find out what the codes are:yes1:


http://fordfuelinjection.com/index.php?p=14

[strokedlx]

i switched the o2 around now its showing a 31 41 91

[Stable]

need new o2's to start.

[strokedlx]

would that make the computer give the motor more gas and making me smell the fumes?

[1sxyfox]

here is my diagnosis, your egr valve is messed up which is causing the fuel to lean out on the car which is throwing your code 41 then when your code 41 is getting thrown, it is causing your code 91 to get thrown, there for fix your code 31 which goes back to the egr. and put new o2's in just to be safe that is if you have the money.

[Notch93]

would that make the computer give the motor more gas and making me smell the fumes?

Yes it very well could. When did you last change the o2 sensors?

[strokedlx]

just changed them and it seems to run much better and idle better. thanks for all of yalls help.

[1sxyfox]

just changed them and it seems to run much better and idle better. thanks for all of yalls help.

has it thrown anymore codes since you changed them?

[strokedlx]

no not yet. drove it for about 20 minutes

[Stable]

Make sure to disconnect the battery for a few minutes to clear codes

[1sxyfox]

be sure to post up and tell us how things go after you drive it for a bit. cause i would like to know for future ref.

[Notch93]

be sure to post up and tell us how things go after you drive it for a bit.

X2 :yes1:

[strokedlx]

drove it to work and home 6 hours and still running fine

[Notch93]

drove it to work and home 6 hours and still running fine

Great news.:thumbsup1:

[1sxyfox]

well then sounds like things should be golden then. maybe haynes should put that in there manual, when some codes get thrown.

[strokedlx]

guys thanks for all of your help

[1sxyfox]

glad we could point you in some sort of direction.

[Notch93]

Just glad to hear your stang is running good again.:yes1: Thats what this site is supposed to be about, members helping out other members.:thumbsup1: