MORE PROBLEMS....
Thread Starter
Joined: Jul 2012
Posts: 28
From: CA
MORE PROBLEMS....
man... here we go again! i have replaced the pistons in this car twice since may.. i have driven rental cars more than my own car!! i am to the point where im contemplating ripping off the fi bull**** and just getting one of those edlebrock carb kits for my car!!!
i keep going through this car trying to find out why it keeps blowing up but i cannot find a thing! right now it is throwing 2 codes p1150 and p1151. i understand very well what the codes mean, the car is running lean and the fuel trim is stuck full rich. i believe the car has a fault causing it to run lean and detonate. i do think i hear it detonating but my mechanic (mustang specific at a well known mustang shop in LA) and fellow mustang drivers all say the car sounds great! it has a small almost rattling noise which has the frequency of a lifter tick however sounds more like two coffee mugs coming together. its a really quiet, and hardly noticeable sound unless you are paranoid as hell like i am and drive the car listening to it every day. the pistons are NPR stock replacement hypereutectic pistons. i have melted and shattered 2 sets in the last few months!!
i just had it rebuilt again and put rebuilt heads on it 2 weeks ago. after i got the engine done i took it to a mustang specialist who fully went through the car and had injectors rebuilt at RC injector in torrence, new plugs, first 500 oil change moble1 synthetic, the whole nine. after putting a little over 1000 miles on her running awesome with no check engine lights or anything i put sct 91 tune on her and went to grudge night at willow springs 1000'. this is the first tune i have had by the way. when it blew up before it never had a tune it was stock. i made 7 passes and the car ran and still is running awesome. it ran a 12.77 1000' on bad tires and a 1.03 reaction time (i know i know) which i felt was very respectable. it took me all the way home from the track with out an ses light and went through multipule on/off cycles at the track with no light. when i got about a half mile up the road on my way to work today the light came on and i plugged my scanner up immediately while i was driving to check the code. they are the same 2 codes that keep coming on but they stayed away for so long? i thought it may be gone for good but NO! i babied her all the way to work and back to avoid the coffee mug sound and was pretty successful. at this point, before the light came on i disregarded the noise because everyone told me it was nothing and not intense enough to be pinging. its not dieseling (preigniting) which i now think is what most people think is pinging and is loud and weird sounding. but it sounds like "ping ping ping ping"..
the freeze frame data for the 1151 code is as follows:
1823rpm
60mph
temp: 190'F
load: 53.3%
short term fuel trim: 3.1%
long term: -0,7
short term2: 32.8%
long term2 : 0.7%
short term3: -54.6%
long term3: 72.6%
long term4: 49.2%
short term4: 85.4%
system1: closed
system2: N/A
does anyone know how to read these and care to elaborate? i greatly appreciate you taking your time to read this and help me!
i keep going through this car trying to find out why it keeps blowing up but i cannot find a thing! right now it is throwing 2 codes p1150 and p1151. i understand very well what the codes mean, the car is running lean and the fuel trim is stuck full rich. i believe the car has a fault causing it to run lean and detonate. i do think i hear it detonating but my mechanic (mustang specific at a well known mustang shop in LA) and fellow mustang drivers all say the car sounds great! it has a small almost rattling noise which has the frequency of a lifter tick however sounds more like two coffee mugs coming together. its a really quiet, and hardly noticeable sound unless you are paranoid as hell like i am and drive the car listening to it every day. the pistons are NPR stock replacement hypereutectic pistons. i have melted and shattered 2 sets in the last few months!!
i just had it rebuilt again and put rebuilt heads on it 2 weeks ago. after i got the engine done i took it to a mustang specialist who fully went through the car and had injectors rebuilt at RC injector in torrence, new plugs, first 500 oil change moble1 synthetic, the whole nine. after putting a little over 1000 miles on her running awesome with no check engine lights or anything i put sct 91 tune on her and went to grudge night at willow springs 1000'. this is the first tune i have had by the way. when it blew up before it never had a tune it was stock. i made 7 passes and the car ran and still is running awesome. it ran a 12.77 1000' on bad tires and a 1.03 reaction time (i know i know) which i felt was very respectable. it took me all the way home from the track with out an ses light and went through multipule on/off cycles at the track with no light. when i got about a half mile up the road on my way to work today the light came on and i plugged my scanner up immediately while i was driving to check the code. they are the same 2 codes that keep coming on but they stayed away for so long? i thought it may be gone for good but NO! i babied her all the way to work and back to avoid the coffee mug sound and was pretty successful. at this point, before the light came on i disregarded the noise because everyone told me it was nothing and not intense enough to be pinging. its not dieseling (preigniting) which i now think is what most people think is pinging and is loud and weird sounding. but it sounds like "ping ping ping ping"..
the freeze frame data for the 1151 code is as follows:
1823rpm
60mph
temp: 190'F
load: 53.3%
short term fuel trim: 3.1%
long term: -0,7
short term2: 32.8%
long term2 : 0.7%
short term3: -54.6%
long term3: 72.6%
long term4: 49.2%
short term4: 85.4%
system1: closed
system2: N/A
does anyone know how to read these and care to elaborate? i greatly appreciate you taking your time to read this and help me!
Thread Starter
Joined: Jul 2012
Posts: 28
From: CA
no.. its just the sct 91 tune. i will dyno tune it as soon as i figure out the problem! was gonna go in this week! it feels great but i just got the tuner a few days ago.. which brings me to another point.. its got no cats and has never threw a catalyst efficiency code before? my mech says he does not believe the car had a tune before and the tune code or whatever has the stock code number.. i wonder why? i suspect an evap leak but i dont throw that code.. another very important detail is that when its warm and i restart after sitting for a few minutes it will die right away.. i have replaced the IACV and the egr seems fine. when i suck on the vac to the egr with my mouth i can kill the car at idle. does that sound about right?
5th Gear Member
Joined: Oct 2008
Posts: 2,173
From: New Jersey
so you're running boost with an sct canned tune? If so that is youre problem, you need to go get a proper tune to run boost.
Hopefully someone can answer you're other question because im not sure about that
Hopefully someone can answer you're other question because im not sure about that
3rd Gear Member
Joined: Jun 2011
Posts: 585
From: East middle of no where, WV
You have supercharger don't you?
If you do, then you blew up the motor the first couple times from not having a tune, and now the motor blew up from the crappy (for forced induction) SCT tune.
Go get a REAL dyno tune for that thing, an SCT canned tune is not going to cut it.
As for the vacuum to the EGR, it should die from not having vacuum at idle which is when the motor is pulling vacuum. Are you sure you have no vacuum leaks anywhere?
If you do, then you blew up the motor the first couple times from not having a tune, and now the motor blew up from the crappy (for forced induction) SCT tune.
Go get a REAL dyno tune for that thing, an SCT canned tune is not going to cut it.
As for the vacuum to the EGR, it should die from not having vacuum at idle which is when the motor is pulling vacuum. Are you sure you have no vacuum leaks anywhere?
Chupacabra
Joined: Jul 2004
Posts: 9,621
From: wilkes-barre PA
How you pass CA emissions with no cats, anyway.... Have you changed the front o2 sensors? Fuel filter? Check for kinked or bent fuel lines? Injectors? MAF? If its running lean there can be many reasons. Maybe that box tune you have was programmed bad, maybe someone drank some beers before work on a friday and leaned out that tune.