Help! clogged cat? or fuel pressure is not moving
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Hello,
I have been trouble this problem for a while, and could not really find out.
Basic synthom is the car is in limp mode,and it wont pass 4k rpm.
Idle is just fine!
when I drive on highway, the engine ligth is keep blicking!
Checked list.
PCV valve,
no vacume leak,
spark plug
Today, I checked the fuel pressure it won't move.
it just stay around 52.
What is this problem..
clogged cat? or
fuel filter?
fuel pump?
...any comment?
thanks
I have been trouble this problem for a while, and could not really find out.
Basic synthom is the car is in limp mode,and it wont pass 4k rpm.
Idle is just fine!
when I drive on highway, the engine ligth is keep blicking!
Checked list.
PCV valve,
no vacume leak,
spark plug
Today, I checked the fuel pressure it won't move.
it just stay around 52.
What is this problem..
clogged cat? or
fuel filter?
fuel pump?
...any comment?
thanks
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first of all what year? miles? any mods? ok so it missfires past 4k? when free reving or under load? if u had it at the dealership they should have a cat test procedure with their scan tool , if they run too hot then theyre clogged and need to be replaced , emission warranty should cover it.
Last edited by redline06; 07-30-2011 at 07:59 PM.
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well first you have to figure out what is causing multiple misfires - plugs, coils, intake leak,dirty of damaged MAF etc.
second, fuel pressure isn't supposed to move, it stays constant as it's a returnless system on an NA car and I assume you have a stock fuel pump
second, fuel pressure isn't supposed to move, it stays constant as it's a returnless system on an NA car and I assume you have a stock fuel pump
#7
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well first you have to figure out what is causing multiple misfires - plugs, coils, intake leak,dirty of damaged MAF etc.
second, fuel pressure isn't supposed to move, it stays constant as it's a returnless system on an NA car and I assume you have a stock fuel pump
second, fuel pressure isn't supposed to move, it stays constant as it's a returnless system on an NA car and I assume you have a stock fuel pump
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first of all what year? miles? any mods? ok so it missfires past 4k? when free reving or under load? if u had it at the dealership they should have a cat test procedure with their scan tool , if they run too hot then theyre clogged and need to be replaced , emission warranty should cover it.
its 2003 78000miles on it,
yes! it has been lowered by spring, intake, clutch,
Can i use emission warranty with these mods on it?
well first you have to figure out what is causing multiple misfires - plugs, coils, intake leak,dirty of damaged MAF etc.
second, fuel pressure isn't supposed to move, it stays constant as it's a returnless system on an NA car and I assume you have a stock fuel pump
second, fuel pressure isn't supposed to move, it stays constant as it's a returnless system on an NA car and I assume you have a stock fuel pump
new plugs on it.
checked coil,
checked intake leak,
new maf sensor.
But....cannot figure out it.
I might put test pipe that just see if that is my problem.
so, you think its not a fuel pump or fuel filter problem..?
im thinking to getthing either berk test pipe or z1 test pipe.
any recommendation?
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How did this end up turning out? I have an 03 with pretty much an identical issue, With 120k miles/190k kms. I’ve done the sparks, the maf is fine but hoping to avoid taking the cats off because it’s a massive pain. Thanks in advance
Last edited by Jackoz33; 05-01-2020 at 12:27 AM.
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