ok i got my car to move under its own power a bit today for about a block then it died the whole time it was spewing white smoke there was no water spit but i had both coolant and oil on the ground. any ideas.

 

ok so i decided to try to trouble shoot and realized that when my car had started and ran it didnt have a afm on it so i tested out my turbo afm on it as well as one from when it was non turbo and neither of them would let it run. i also checked my tail pipe and while it wasn't spitting anything out onto the ground there was some fresh oil in the tip of the exhaust im just wondering if anyone has any ideas what any of this could mean.

(i copy pasted this from a local forum so i just figured id toss up everything i had so far on here considering ill probably get a faster response.)

 

hmm you could have fried the oil control rings. You know you shouldnt drive your car around if it doesnt sound right, I know in the excitement you get caught up and think it will be ok but you could have damaged your engine really badly.
Next time fix it properly, then drive it. I speak from experience.

 

dose nobody have any idea why my car would stay running with the maf unhooked but won't when it's hooked up.

 

I think you need to elaborate on your setup exactly. It is a swap or true turbo II or what. List relevant mods and such.

 

idea one. rebuild your engine.
idea two. fix your car by doing step one.

 

stay running? does your car just die out? Do you need to keep the pedal held down to keep it running? please leave the MAF connected, I know this from experience. It could be several things, describe your problem in more detail.

 

Detail for what? He's "spewing white smoke". Coolant seal gone = motor full of coolant = car doesn't want to run. Rebuild time. It's the only answer.

 

true that, if there is oil AND coolant on the ground fromt he exhaust...... means your coolant seals are toast, control rings are toast and you have possibly warped your housings. I hope it's just a leak!

 

i get the rebuild and thats my plan. my car is a swap car but my concern is at the moment why. I really just need to know why my car is only staying running with the MAF unplugged.

 

Maybe because the car is in limp mode and it is throwing massive amounts of fuel blindly, on top of this your idle should be something crazy high like 2-3k. The high idle is probably what is keeping it running if you have coolant in the engine.

 

map sensor wouldn't cause large amounts of coolant and oil to be coming out of the tailpipe.. it has nothing to do with the problem

sounds like some bad seals

 

ok non of this has answered the question as to why it only runs and stays running with the maf disconnected. i am well aware that i will need to rebuild my motor, but need to know what to look at as to why my car only runs without a maf.

 

As JJcobm kinda said, the maf is unplugged so it could be tricked into sending more fuel which would keep it running even with some coolant in the motor. Sounds a whole lot like the coolant seals went bye bye, which has happened to 90% of us.

Also please dont drive the car until its fixed, i let mine run a little too long when the seals were bad and trust me im paying for it.

 

the thing is though is it will start with the maf plugged in but wont stay running when i pull the motor i wanna get the other issue sorted out and really need to know why it wont run with the maf plugged in i get why it's running when it's unplugged now but why dosnt it just do the same thing when its plugged in?

 

Dude, i just answered your questions look at my previous post. It is in LIMP mode when you have that MAF unplugged!!!

It won't run when its plugged in because you said you have coolant coming out of your tailpipe, of course its not going to run when the computer is trying to run the engine normally. Normally does not mean coolant in the combustion process!!

MAF Unplugged = Massive amounts of fuel plus SUPER high idle runs like crap
MAF Plugged = Normal amount of fuel thrown in to mix with proper amount of air coming in. Nice smooth idle around 850rpm, no way is it going to idle at that speed when you have coolant in the combustion process.

 

so in all a rebuild will fix the running issue? has anyone seen this particular issue and theres nothing i should check electrically?

 

From my experience I have never been able to keep a seven running with the maf unplugged. When you unplug it, it should die, outright. I've never seen it get into limp mode and stay running without the maf. Is this car evevn a series 5? That's strange. Unfortunately, its hard to diagnose a problem with a blown engine.... I've also never seen a car flood and die because coolant was gushing in. If it was gushing in that bad it wouldn't even start.

So, is this car a series 4 or 5? You haven't given us a whole lot of info as to any respect except that:
1- the car leaks oil and coolant out the exhaust
2- white smoking
3- doesn't run with the maf plugged in

 

^ my s5 ran with the MAF unplugged and was idling and running pig rich (exhaust was spewing out unburnt gas). I didn't figure out why it was doing this until I found I forgot to connect my MAF. For a second I thought she blew.

You are right on the note the OP hasn't given us much information, condition of engine, why he "just got it running", ect.....

but to the OP, if you connect the MAF and it starts but doesn't stay running, have you tried to start it and step on the gas pedal some to keep the rpms up? It SHOULD run this way instead of dying out like you say. If you have coolant and oil coming out that exhaust, my last worries would be about the MAF.

 

it is a s4 and yeah sorry i just copied and pasted this from a local forum where everyone knows i have a s4. it dosnt leak heavily out the tail pipe nothing comes out period i have to put my finger in the tip to see if there is anything but there is a small mixed puddle of oil and coolant under my down pipe. and the maf unplugged i dont get i figure it has to be electrical but i have no idea where to start checking.

As for all respective info:
S4 GXL to T2 swap.

I have tried to step on the gas with the maf plugged in and it still wont run w/ it plugged in.
i am well aware that the engine needs a rebuild and plan on doing so but i want to be able to get the issue with the maf sorted at the same time, so when i get everything hooked back up it will run. dose anyone have any sort of idea other than "the motor is done" that might be a indicator of why it only runs with the maf unplugged? has anyone had this issue before?

 

could be crossed wires on the maf input. I've told ya a million times to swap your t2 harness for a proper n/a.

 

if i can get a n/a harness can i swing by with it and have you help me mod it cause i have no clue what to do usually on the electrical side of things?