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New exhaust problem with motor 

 

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 Post subject: New exhaust problem with motor
Posted: Sat Aug 04, 2007 5:05 pm 
Getting Side Ways
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hey guys well i got a exhaust for my bday
pacemaker extractors
high flow cat
2.5" mandrel bent sports exhaust

now the problem i have is when i put my foot down to go
the carries on like its misfiring
i just spoke to a mechanic and he said i will need a chip because the stock one wont keep up with the new exhaust or something like that all i wanna no is from the guys that have the same sorta set up
did you have this problem?
how did you fix it?
is it not the exhaust maybe motor(injectors, fuel pressure)?

thx in advance

the car is a 98 el falcon gli 6 cylinder if that helps

Last edited by Kenay on Sat Aug 04, 2007 5:09 pm, edited 1 time in total.

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Posted: Sat Aug 04, 2007 5:08 pm 
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misfiring wont have anything to do with the exhaust.

Did it do this before you had the new zorst fitted?
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Posted: Sat Aug 04, 2007 5:09 pm 
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reconnect or replace the 02 sensor.

 

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Posted: Sat Aug 04, 2007 5:16 pm 
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FordFairmont wrote:
misfiring wont have anything to do with the exhaust.

Did it do this before you had the new zorst fitted?


nope didnt do it

Quote:
="twason"] reconnect or replace the 02 sensor.


it was reconnected but nope replaced[/quote]
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Posted: Sat Aug 04, 2007 5:37 pm 
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9 times out of ten a misfire is going to be ignition system realated. the fact it started after the exhaust was put on is more then likely just coincidence.

 

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Posted: Sat Aug 04, 2007 6:06 pm 
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yeah but new exhaust wont effect it misfiring and you definately dont need a chip for exhaust...i reckon check if oxy sensor was damaged when changed over

 

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Posted: Sat Aug 04, 2007 7:05 pm 
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they dropped the oxy sensor.

my car did the exact same thing when i dropped mine.

just go to a pull-a-part wrecker and get an EF/EL one they are mostly clean still and work fine.

 

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 Post subject: Re: New exhaust problem with motor
Posted: Sun Aug 05, 2007 2:47 pm 
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Kenay wrote:
hey guys well i got a exhaust for my bday
pacemaker extractors
high flow cat
2.5" mandrel bent sports exhaust

now the problem i have is when i put my foot down to go
the carries on like its misfiring
i just spoke to a mechanic and he said i will need a chip because the stock one wont keep up with the new exhaust or something like that all i wanna no is from the guys that have the same sorta set up
did you have this problem?
how did you fix it?
is it not the exhaust maybe motor(injectors, fuel pressure)?

thx in advance

the car is a 98 el falcon gli 6 cylinder if that helps


Hey! I've just had the exact system fitted just over a week ago, and issue you're having.

It's not a misfire, more like a flat spot. I have full new head, complete new ignition system, and the problem wasn't there before the exhaust.

Tell me, is only when you're coasting? ie: just keeping enough throttle to maintain speed, and it sometimes feels a bit 'jerky?.. and when you boot it, it runs fine and hauls like a Falcon should?

My bet was something to do with fuel, and the o2 sensor made more sense to me. It's only happened about 3 times, but hasn't occured much over the last couple of days, so I've ignored it. I am keen to replace the o2 soon tho, next pay prolly.

 

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