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| Bassfreak55 |
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Hey guys.
My car (manual el xr8) runs awesome when cold, but once the engine reaches 'normal' operating temperature, it loses heaps of performance at full throtle? Why would this be? |
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| EDXR8 |
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I would be checking AF ratios on the dyno, the only thing I could think of is if the car runs very lean (from maybe a dirty MAF or bad injectors/pump) then the extra fuel added when cold brings the AF ratios back to normal. The EEC doesn't do anything to timing until it gets really hot so fuel would be the only thing to look at I reckon.
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| Bassfreak55 |
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{USERNAME} wrote: I would be checking AF ratios on the dyno, the only thing I could think of is if the car runs very lean (from maybe a dirty MAF or bad injectors/pump) then the extra fuel added when cold brings the AF ratios back to normal. The EEC doesn't do anything to timing until it gets really hot so fuel would be the only thing to look at I reckon.
Good stuff, if its as easy as that then ill be happy, lol. Looks like ill be booking it in for some dyno time.. |
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| NC 5ltr |
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{USERNAME} wrote: Hey guys.
My car (manual el xr8) runs awesome when cold, but once the engine reaches 'normal' operating temperature, it loses heaps of performance at full throtle? Why would this be? u shouldnt really flog ur car when its cold 
_________________ "Looking at cleavage is like looking at the sun. You don't stare at it. It's too risky. You get a sense of it and then you look away."
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| Bassfreak55 |
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{USERNAME} wrote: {USERNAME} wrote: Hey guys. My car (manual el xr8) runs awesome when cold, but once the engine reaches 'normal' operating temperature, it loses heaps of performance at full throtle? Why would this be? u shouldnt really flog ur car when its cold Yeh i dont really, but as a comparison i did.. lol 
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| EL XR8 |
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Yeah, my XR8 is the same, once the car has warmed up, to above the line on the temp gauge, it pulls a fair bit harder, once its warmed up to the usual operating temp, i can notice t just doesn't pull as hard.
I might have to check some of this myself as well. Thanks Dude Dave |
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| dalesf150 |
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doubt it's the problem but I pulled the 192deg factory thermostat and put a 180 in seemed to make a noticable underfoot differance. any lower and according to the mustang tech talk the eecIV runns in warmup mode
_________________ If mistakes are the best way to learn why the hell arn't I a freekin genius yet.
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| Bassfreak55 |
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{USERNAME} wrote: Yeah, my XR8 is the same, once the car has warmed up, to above the line on the temp gauge, it pulls a fair bit harder, once its warmed up to the usual operating temp, i can notice t just doesn't pull as hard.
I might have to check some of this myself as well. Thanks Dude Dave Yeah man, thats the EXACT same problem that ive got with mine.. Its f**k, i hate it.. Rang the mechanic today, he seems to think it might be electrical related, like coil or sum s**t, but wont say forsure unless i leave it with him.. |
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| Bassfreak55 |
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{USERNAME} wrote: doubt it's the problem but I pulled the 192deg factory thermostat and put a 180 in seemed to make a noticable underfoot differance. any lower and according to the mustang tech talk the eecIV runns in warmup mode
my thermostat has just been replaced with an OEM one from ford, didnt make a s**t of a difference, lol |
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| fairmont1998 |
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{USERNAME} wrote: Hey guys.
My car (manual el xr8) runs awesome when cold, but once the engine reaches 'normal' operating temperature, it loses heaps of performance at full throtle? Why would this be? Are you running a pod filter?
_________________ 2008 WQ Fiesta XR4 |
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| One Drone |
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EDIT: lol my bad..
Once warmed up, most cars will lose power.. Pretty simple really. Hot air = less dense air = less performance.
_________________ There are 10 types of people in this world. |
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| NC 5ltr |
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{USERNAME} wrote: EDIT: lol my bad..
Once warmed up, most cars will lose power.. Pretty simple really. Hot air = less dense air = less performance. toshey or however the f**k u spell it ....lol 
_________________ "Looking at cleavage is like looking at the sun. You don't stare at it. It's too risky. You get a sense of it and then you look away."
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| Bassfreak55 |
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{USERNAME} wrote: {USERNAME} wrote: Hey guys. My car (manual el xr8) runs awesome when cold, but once the engine reaches 'normal' operating temperature, it loses heaps of performance at full throtle? Why would this be? Are you running a pod filter? Nope, no pod filter. Just a BMC panel filter in a standard box, with ss induction. But yeah, its not sucking up hot air from anywhere... |
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| EL XR8 |
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Yeah thats my problem, i've a got a BMC Pod Filter, with one of the shrouds from the BA XR's, but no cold air yet!
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| kenny |
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Sounds like a typical problem with the bloody things
cos Guess what ???? mine's the same!! It drives you up the wall trying to find the problem, just when you think you have found it , you find its not the problem at all!! dyno analizing is the only way, check AF ratios, spark timing etc cos you will spend s**t on replacing parts that are ok.
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