hi all


i have a 03 se with 60K miles and its auto. well for past few weeks i notice it doesnt have the same power anymore, its much slower then before, i checked the MAF sence i had prob with it before and did a seafoam, it shifts fine but the rpm doesnt jump when i floor it, it raises slow and smooth. what can it be? there is no ses light no nothing and the car sounds fine too. can it be the VIAS?

 

what are you talking about? Car doesn't have enough power? it doesn't downshift fast enough?

If there is a problem because there's not enough power, then there is exactly 835,239,489 possibilities. Google a list of them and get started checking them, though the most common problem is someone just thinking their car should be more powerful than it is.

Otherwise, a little more detail might be helpful into narrowing that list down for you.

 

Well stated. Need more info.

 

No dyno no care.

 

Sounds like your transmission just isn't downshifting when you floor it. I'm not real familiar with these auto trannies, but do they have a kickdown cable? If so, that may be your problem.

 

Nope. Not even a throttle cable. All electronic.

 

its not the downshift cuz i tested from 0mph, 30 mph and 50mph, and it down shifts fine and i could notice the lack of power at 0mph test the most its like a hesitation after i press the gas that the rpm goes up slow to 3k rpm then it takes off faster. it might be the tranny idonno. im gonna take it to the buddy of mine who has shop on wed and let him check it out, cuz i really dont know whats wrong and i donno how to narrow it down.

 

try doing the relearning precedure for the accel pedal. its all you have to do is:

-put the key in the ignition (don't touch the pedal during this process)
-turn key to "on" position for 2 seconds
-turn key to "off" postion for 10 seconds
-turn key to "on postion again for 2 seconds.
-then finally turn key to "off" position for another 10 seconds.

and thats it. i dont know if thats what it might be but its worth a shot. hope that helps.

 

i will try that first thing tomorow thanks

 

What TF did you say? I couldn't find the definition of "cuz"

 

may be you got fat???

 

First, it doesn't downshift from 0. When stopped, you take off in first, there isn't a downshift to go to.

Secondly, again, a lack of power in this case has nothing to do with the tranny if it's shifting fine.

Third, if you're complaining that you don't have as much power below 3k rpm as you do above it, then stop it. All of the 5.5 gens needles take off a little faster after 3k rpm because that is where our power curves spike.

Reason they spike at 3k rpm? VIAS opens. This is unlike 4th gens because stock 4th gens don't have a variable intake. 5th gens, the VIAS doesn't open until about 5k I believe, I may be wrong though.


Lastly, if you're complaint is that you have actually NOTICED a decrease in power from earlier, and aren't just saying that there isn't as much below 3k as above it, then see post #4. Nmex is very knowledgeable about power problems, and the very first thing you need to do when your butt dyno tells you there is a problem, is get a real dyno and make SURE there is a problem, and a dyno will be able to give a lot more info about exactly what the problem could be and where.

 

What did you say? I can't find the definition of "TF"....

 

let us know if that helped any

 

i know it doesnt downshift from 0 thats why i said its not the down shift and yes i notice its lacking power and i said that on the first post " for past few weeks ". dyno sounds like a good idea.

 

okay, sorry for the sarcasm. If the only symptom is power loss, then the dyno is the first place to start. Hope it works out for ya.

 

Just curious - how do you check the MAF?

 

well i just got back from the shop, i changed the spark plugs , changed oil ( it had about 900 miles on it but i changed it anyway) and did the accel pedal precedure relearning. holly crap, its alive again, and it idles so quiet. i took it on the highway and dammmm it moves again and i was crusing at about 60 mph and i could barly hear the engine. i dont know exactly what fixed the prob but thanks alot every1.

 

were they the original plugs? also i think doing both the plugs and pedal relearing procude made the differance. glad to hear your car is better than ever.

EDIT: how much did they charge you to do plugs ?

 

yeah they were the original and my buddy charged $30 + a pack of beer. sounds like a deal to me. i replaced it with NGK iridium plugs. thanks again for all your helps