T O P I C R E V I E W
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alexdel209
Member # 9239
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posted
Well my fuel trim is steady at pos 16 I just changed my fuel pump and filter cleaned my injectors my fuel pressure is good my Maf is good and my o2 sensors are switching and I have no vacuum leaks
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Adam5.0
Member # 6995
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posted
ect, maf, o2 sensors, air temp senor are the major sensors that control fuel trim. hook a scanner with data stream and go from there, if you already havent. I think you have since you know where your fuel trim is at.
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alexdel209
Member # 9239
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posted
yeah i have a snap on scanner at work but yeah my maf and o2 sensors are good my ect also but my fuel trim is steady at pos 16 i have no vaccuum leaks my only thought is maybe my pupm isnt pumping enough its a stock replacement but all i have is all boltons intake,longtubes,programmer,pullies throttlebody
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Blind
Member # 3052
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posted
look harder for vacuum leaks, mine was similar to that and I found the EGR gasket was ripped so I could never find it at idle...
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alexdel209
Member # 9239
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posted
ok will do but i mean ive gona through a bunch of cans of brake clean looking for it its just getting frustrating you know
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Adam5.0
Member # 6995
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posted
did this just start hapening? try taking out the programmer and put the stock tune back in. as stated before look again for vacuum leaks, exhaust leaks
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alexdel209
Member # 9239
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posted
the thing is i also smoke tested it and nothing and i also tried taking off the programmer nothing changed it goes higher at idle then lower when driving so i know there is a problem somewhere
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Blind
Member # 3052
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posted
I could not find my leak until I pulled the egr off the intake when I had given up and was just going to replace all the intake gaskets...
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alexdel209
Member # 9239
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posted
well that does make some sense because i did have longtubes put on not too long ago but i had sprayed around the egr and didnt make any change ill look into it tho
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fasthatch
Member # 7277
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posted
quote: Originally posted by alexdel209: well that does make some sense because i did have longtubes put on not too long ago but i had sprayed around the egr and didnt make any change ill look into it tho
how far are the o2 down stream an what postion are the in
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alexdel209
Member # 9239
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posted
well i have longtubes so they are a little farther downstream than normal
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fasthatch
Member # 7277
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posted
quote: Originally posted by alexdel209: well i have longtubes so they are a little farther downstream than normal
no shit if there to far downstream or not in the right postion the will give all kinds of problem an did use os extenders
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alexdel209
Member # 9239
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posted
Yeah I have the extended but they are switching fine I even put in new o2s because I got a slow response code a hole ago I'm thinking some kind of vacuum or exhaust leak but. Smke testedit and dint find any
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fasthatch
Member # 7277
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posted
quote: Originally posted by alexdel209: Yeah I have the extended but they are switching fine I even put in new o2s because I got a slow response code a hole ago I'm thinking some kind of vacuum or exhaust leak but. Smke testedit and dint find any
are use the scanner to get or maf an o2 values
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alexdel209
Member # 9239
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posted
the scanner and a dvom maf is good also 02s are brand new and no manifold vaccum leaks that ive found and i smoke tested and used hella brake cleaner
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fasthatch
Member # 7277
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posted
quote: Originally posted by alexdel209: the scanner and a dvom maf is good also 02s are brand new and no manifold vaccum leaks that ive found and i smoke tested and used hella brake cleaner
what your baro reading
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alexdel209
Member # 9239
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posted
14% load at idle havent looked at baro pressure but will tom also goin to smoke test the exhaust im thinking a upstream exhaust leak
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alexdel209
Member # 9239
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posted
ok here are my readings at idle today when the car was warmed up long term fuel trim bank 1 pos 24 longterm fuel bank pos 21 pulse width 2,8 both sides maf 4.22 grams .73 volts fuell pressure 40 lbs load 13% throttle pos volt 1.01
i have checked for vacuum leaks and exhaust leaks my egr workks and is not leaking.changed the fuel pump and filter and the 2 front o2 sensors. and a new iac motor kind of confused
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