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bad accelerating issu

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Old 03-20-2012 | 07:42 PM
  #1  
JF123's Avatar
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Angry bad accelerating issu

hi every one

my problem i got for an RX8 2004 GT .. is simple but hard for me to describe it. so i run and the car just stall evry where.

i got 2 vid about what it's doing. 1rst im park i got a full open throttle

the second one i'm runing i've change the sparkplug.it was better but well you'll see by yourself.

i change the sparkplug, change oil i know it's not for the issu but its done, and change fuelpump. after change the pump everyting was ok until a run about 30 min.. it all come back.

for the old pump it was making a weard sound.

i notice where the pump is its realy hot.

it a new motor changed about a year.

thanks for all ..
Old 03-20-2012 | 07:50 PM
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A few questions:

A) You have a check engine light. What codes are causing that? Don't make an assumption, have the codes pulled

B) In the first video, do you have the pedal to the floor the entire time? or only once the revs start climbing? Do you have the pedal to the floor as the engine shuts off at the end?

C) In the second video, is that full throttle acceleration?



A few things come to mind right off the bat, but could easily be wrong based on what you are actually doing in each video.


MAF disconnected/filthy/damaged/failed is the first thing that comes to mind. If the ECU can't read airflow the ECU just floods the engine with fuel the higher the RPMs you go, trying to prevent a lean spike. A fully disconnected MAF and the engine will not be able to make enough power even under neutral load to get past ~3,000 rpm

There is also the typical ignition issues (you got plugs, but no mention of coils or wires, they fail just as fast as the plugs), e-shaft sensor fouled, a clogged cat (which usually happens from a failing ignition), or even O2 sensor failure.

Pretty much all of these will cause a CEL of one code or another, so seeing that you do indeed have a CEL makes me curious to know what it's for before suggesting further.
Old 03-20-2012 | 08:42 PM
  #3  
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Your check engine light is on.
You do know you're supposed to start there, right?

Once you have the codes, feel free to come back and share them with us.

BC.
Old 03-20-2012 | 09:42 PM
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Exclamation

the check engie is my sensor 1 bank 2 o2 it about a long time it's like that. (p0138 and P0037)

after i change the plug i get a missfire cylinder 2 (P0302), the wire have been change at the same time of the motor. that why i forget to said it. and coil i was thinking about that too. but when i eard the fuel pump make a biiiizzzzzzz buuuuzzzzzz bizzzzzzz buzzzzzz bizzzz when normaly i only eard bizzzzzzzzzzzz. i was worried about it so i change it.

ihave erase all code and after a run only P0037

after that the first vid .. it was a full open but when it as 1000 rpm i wasn't pull in and the last run before it stall it was full open and stall full open.

and the second vid it is a full throttle. the 3 or 4 sec of the vid before i slide a litle it was what is it doing after a longue ride and sometime it stall right away. i push the cluth and try to play with throttle and nothing work ... i got the tps in mind but why does the car stall if it's that.

the ess i clean it, and check maf it was clean ... and no code about it

for the cat if it was clogged should it be glowing red after a run ?

i add a new vid about my new fuel pump ... cause it make that sound when the car goes wrong


is it a bad connection ... or a faulty pump ??

well thanks for your answer and sorry my english is bad haha :s
Old 03-27-2012 | 11:30 AM
  #5  
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here i just want to thanks for the help i get ! ..

the problem seems to be the batteri after i change it everyting work number1
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