T O P I C R E V I E W
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johnson50
Member # 4608
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posted
i ran a diagnostic test and 41 and 91 came up. those two numbers are my o2 sensors. i changed the o2 sensors and again 41 and 91. and also my car runs like shit. has no power and exhaust pops when the throttle is mashed down. it hesitates and just plain runs like shit. one more ?, if i have a o/r h pipe, should i get a check engine light from the o2 sensors because i have no cats or what? please help.
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SilverLX351
Member # 3207
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posted
The O/R H wont make it run different or throw a code. Sounds like your car has either too much or too little fuel pressure, or the timing is off.
Good luck!
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johnson50
Member # 4608
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posted
nope, timing is good. don't know about the fuel system. if you turn the key to the on position but not start the car, should the fuel pressure stay up or should it bleed down. because my pressure bleeds down to 0 in about 10 seconds.
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9cobra9
Member # 4470
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posted
huh, i also have an o/r h without cats and have a check engine light on. i cant really notice a differance in the way the car is running but the light is on. would my aftermarket headers throw te code on or would mil's be good enough to take it out?
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Jeff S
Member # 371
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posted
Have you changed/added any parts recently? What does your fuel system consist of?
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94gt
Member # 3060
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posted
quote: Originally posted by 9cobra9: huh, i also have an o/r h without cats and have a check engine light on. i cant really notice a differance in the way the car is running but the light is on. would my aftermarket headers throw te code on or would mil's be good enough to take it out?
do you have the MIL eliminators? those are mandatory on modulars when running any o/r mid pipe
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johnson50
Member # 4608
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posted
yes, i just swaped out a new 306 longblock. for a fuel system, i have 24 pound injectors, regulator, gauge, and 155 lph pump. the pump is new but i have a feeling it is bad.
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04mustanggtkibby
Member # 4202
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posted
I put my stock o2 sensors and tied the cords together on my Off road H. It wont run right if you dont got mil eliminators? I wans just going ti buy a programer.
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