so yesterday i was driving to work and i was getting on the on ramp and hit the gas and my car had nothing.... if i litteraly barely put my foot on the gas it would go but if i even came close to boost it would just die! anyone else had this problem? i have been looking around for a bit but can't find anyone that is havin the exact same problems

it was driving fine two days ago but now i try anything to much and it just wants to fall on its face and can barely get it to go 40 mph in 3rd...if i try 4th it doesn't drive at all

 

any CEL's?

 

nope nothing...and no misfires...my wideband jumps to 17+ and then doesn't read when i touch the gas

 

bump

 

cleaned all of my sensors...checked the plugs (only have 500 miles on them and are still clean) and no difference..

the tune maybe?

 

wouldnt be your tune. Tunes dont just majically cause issues, unless the PCM takes a dump somehow. Check for boost leak, get a compression check done and check your IC pump.

 

IC pump? How would an IC pump cause this?

 

if your wideband is reading lean like that i'd start looking at fueling. possibly clogged fuel filter. happened to me a couple years ago. downshifted to pass a truck on the highway, didnt hammer it but i goosed it enough to get around. as soon as i got into heavier throttle my motor died and wouldnt start. had to tow it home. as soon as i got home the car started fine. the ride on the tow truck rattled the clog loose. needless to say i changed the fuel filter the next day and all was peachy.

 

well i did just go from pump gas to e85 but i changed my fuel filter not even 1500 miles ago... and i checked for leaks and found nothing...ic pump is fine haha

what about this extremely cold weather? especially runnin e85?

as far as the tune is conserned i had an update last sat and now 3 days later it is doing this...

 

just because you just changed your fuel filter doesnt mean it couldnt be clogged. it can take just one fill up to get a ton of crud in your tank. especially if the gas station's storage tanks were just filled, stirring the filth in the bottom of their tanks.

as far as e85 goes, it isn't too friendly with cold weather. i noticed it was more difficult to start the car once the ambient temps started dropping. also my tune wasn't the best so it could have been a combination of both. once the cold came i switched back to gas.

since your wideband is pegging lean i doubt it would be the e85, although i could be wrong. the wideband going lean suggests a strong lack of fuel.

Whats your spark plug gap? What heat range? now that i think about it, it could be possible with the colder weather and an improper plug/plug gap could lead to the fuel not igniting at all.

 

I would point to fuel system. Check injectors , filter, lines, etc.

I dont think I have heard of E85 being tough in cold other than cold starts.

Also do you have an interceptor or HPT? You may have a code pending.

 

Im having the same problem but my fuel pressure is fine,we are in the same boat

 

Injectors spraying correctly? How many miles on them?

 

ic pump fails, your iat2 goes up, you get knock retard and that would cause you to loose your power.

 

Yah but not 17+ AFR's

 

i have then gapped at a 34 and have the ngk one step colder...

 

i checked my codes and everything on my interceptor and everything, there was nothing pending...iat2's are low cuz of the cold and everything is fine there. i bought them used and im pretty sure they are sprayin fine. my car was running perfect when i initially got injectors and the tune. most of the updates have been really good as far as fuel trims and everything else but now it just running like **** 3 days after i got my last update! doesn't help that at the same time the weather has been colder than **** and also put gas in my car...i just wonder if it is a combination of things that are happening with it

getting a data log tmrw from my tuner to see if we can pinpoint it a little better, if it drives

idles great but the sec i put a load on it she falls on her face and does nothing

 

This did happen to me when my TPS went out, its a stretch. Then again I did have a code. Hope the tuner sees something you cant..

 

I also think its something fueling related. I dont think its E85 or cold related cause I drove my car last winter on E and it drove fine in -40* temps. Maybe get your injectors tested?

 

sorry, i missed that part.

 

MAF sensor? That would throw you AFR all wonky and mine fell on it's face the same as yours is when I got my MAF a little wet How's your idle when you first start the car?

 

idle is good and i got an update and i can at least push the gas now but still is horrible!

for the heck of it before i got my update i checked if i had codes and i got p0131, p0137, and p1133...i was like wtf...those weren't there yesterday! so im gonna change my o2 sensors and go from there...

 

wow i cant believe i didnt see someone say this aready. If you are cattted still check it, because if you get on it and a cat is clogged the exaust pressure will have no where to go so therefore you will see lean numbers and youll bog and die.

 

interesting...i just got my zzp longtube on black fri but didn't run my car till 2 weeks ago... you think it would already be clogged? i also got p0030 yesterday wondering if i have a short to ground somewhere on the o2 sensor

 

oh lol yeah check your 02 sensor to see if it is grounded lol. itlo cause this but if you got the code check your cat as well and i do belive you could have clogged it already since you are tuned ect.