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Jeff92AWD
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Post subject: Re: Can't get my car to run under boost Posted: Sun Oct 04, 2009 10:50 pm |
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| Weekend Wrencher |
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Joined: Fri Nov 23, 2007 2:24 am Posts: 196 Location: Ft.Wayne
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I have seen some weird things happen with the FIAV before, but usually if the idle is good, it should be alright. I thought of those 2 things because you said it runs rough for the first few minutes.
_________________ '92 Mighty Max
4G64
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mavisky
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Post subject: Re: Can't get my car to run under boost Posted: Mon Oct 05, 2009 8:41 am |
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| DSM Guru |
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Joined: Sat Nov 17, 2007 12:56 pm Posts: 1160 Location: Fort Wayne, IN Highscores: 4
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Under knock the ecu pulls timing, i'm no expert with the dsm ecu, but as I understood it there's no changes to fuel delivery coming from the ecu when it sees knock.
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 PTE 6152 powered fwd lol 3rd gear wheelspin wut
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djsuperwho
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Post subject: Re: Can't get my car to run under boost Posted: Mon Oct 05, 2009 5:48 pm |
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| Weekend Wrencher |
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Joined: Mon Dec 03, 2007 12:25 pm Posts: 176 Location: fort wayne,indiana 46818
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i will put some thick oil in the engine just to see if the knock goes away or shows less,if it does I know it is engine related. that is only thing that I can think of that I haven't done all ready. AL
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Benjamin
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Post subject: Re: Can't get my car to run under boost Posted: Mon Oct 05, 2009 9:01 pm |
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| Weekend Wrencher |
Joined: Wed Sep 23, 2009 8:35 pm Posts: 113
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If you replaced the MAFS, did any of it have the honeycombs removed?
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djsuperwho
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Post subject: Re: Can't get my car to run under boost Posted: Mon Oct 05, 2009 10:41 pm |
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| Weekend Wrencher |
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Joined: Mon Dec 03, 2007 12:25 pm Posts: 176 Location: fort wayne,indiana 46818
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The maf that I am running right now it has honeycombs taken out,but I did tried complete stock maf and it didn't make any changes.Why do you say that? Al
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jking29
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Post subject: Re: Can't get my car to run under boost Posted: Tue Oct 06, 2009 1:01 am |
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| Weekend Wrencher |
Joined: Thu Mar 27, 2008 11:15 pm Posts: 206 Location: Delphos, Ohio
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Al, can you post a couple of logs. One with you rolling slowly into the throttle, and one slamming it WOT. It sounds like you have a bad case of phantom knock. Also, any chance of a fuel leak at the pump where it connects to the hose or where the hose connects to the hanger? Did you use a new hose?
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John
Going fast for cheap since 83
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djsuperwho
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Post subject: Re: Can't get my car to run under boost Posted: Tue Oct 06, 2009 11:21 am |
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| Weekend Wrencher |
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Joined: Mon Dec 03, 2007 12:25 pm Posts: 176 Location: fort wayne,indiana 46818
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John,I have no clue how to post logs on here.I am tunning with pocketlogger on that car. I don't even know if it is possible to do that without dsmlink.If phantom knock is the problem how do I get rid of it? Al
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Benjamin
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Post subject: Re: Can't get my car to run under boost Posted: Tue Oct 06, 2009 8:48 pm |
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| Weekend Wrencher |
Joined: Wed Sep 23, 2009 8:35 pm Posts: 113
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Some people have experienced phantom knock when the honeycombs are removed from the MAFS. I bet you might have a problem with the wire that runs to the knock sensor whether it is cracked or have corrosion somewhere. Are the lifters noisy?
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djsuperwho
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Post subject: Re: Can't get my car to run under boost Posted: Wed Oct 07, 2009 5:35 pm |
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| Weekend Wrencher |
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Joined: Mon Dec 03, 2007 12:25 pm Posts: 176 Location: fort wayne,indiana 46818
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no actually it is really quit engine,runs real smooth.
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Benjamin
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Post subject: Re: Can't get my car to run under boost Posted: Wed Oct 07, 2009 7:17 pm |
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| Weekend Wrencher |
Joined: Wed Sep 23, 2009 8:35 pm Posts: 113
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Until you hit boost! 
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jking29
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Post subject: Re: Can't get my car to run under boost Posted: Thu Oct 08, 2009 12:52 am |
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| Weekend Wrencher |
Joined: Thu Mar 27, 2008 11:15 pm Posts: 206 Location: Delphos, Ohio
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If you go wide open, lift for about 1/2 second and get back into it, does it still lay down or does it run better?
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John
Going fast for cheap since 83
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Jaguar
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Post subject: Re: Can't get my car to run under boost Posted: Thu Oct 08, 2009 6:59 pm |
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Joined: Wed Nov 14, 2007 11:50 am Posts: 793 Location: Paulding, OH
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if you can get it to hook up to a pc, just hit print screen and save it as a jpeg and then upload it like you upload any pic. Or take a pic/vid of the logger with a camera and post it up.
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mavisky
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Post subject: Re: Can't get my car to run under boost Posted: Thu Oct 08, 2009 7:37 pm |
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| DSM Guru |
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Joined: Sat Nov 17, 2007 12:56 pm Posts: 1160 Location: Fort Wayne, IN Highscores: 4
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He's probably logging with a palm m100 or similar.
_________________
 PTE 6152 powered fwd lol 3rd gear wheelspin wut
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griffin81
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Post subject: Re: Can't get my car to run under boost Posted: Fri Oct 09, 2009 8:00 am |
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| Elite |
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Joined: Wed Nov 14, 2007 8:22 pm Posts: 347 Location: Defiance Ohio Highscores: 1
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can you have someone ride with you and take video of your gages and pocketlogger as you driving your car and post it. Mabye see what data shows and how car acts will help someone understand and see whats gone wrong?
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colonel_odem
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Post subject: Re: Can't get my car to run under boost Posted: Fri Oct 09, 2009 6:10 pm |
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| Weekend Wrencher |
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Joined: Sat Jan 12, 2008 9:06 pm Posts: 269 Location: Kendalltucky Highscores: 8
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I had this similar problem when my car was running, I went through a flooded intersection and the problem started. do you have any recollection of the occurances before you had this problem? Or did you inherit this with the car? I always thaught it was the power transistor, but you have already swapped that. did you swap it with a New one?
_________________ Down, feelin' kinda out...
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