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Old 08-05-2010, 03:53 PM   #41
G.I.Ceo
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Well I got my code off when I cleaned my MAF sensor and i am still having the tranni slam when I put it into drive.

When I installed the header's I took off the UIM, fuel rail, injectors, injector harness, CAI, throttle body, EGR valve etc...

I just can't stop the tranni from slamming when I put it into drive and it never did that before I installed the headers. Is it possible something is not wired right, not plugged in right? I did have a problem with my fuel rail leaking fuel but I think I got that figured out.
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Old 08-05-2010, 04:27 PM   #42
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So have you ever had your codes ran? it still sounds like the MAF still isn't working or isn't working right. every time my trans has shifted really hard if from the MAF sensor either being bad or not plugged in.
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Old 08-05-2010, 04:31 PM   #43
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Quote:
Originally Posted by AleroB888 View Post
I'm not so sure about that, I got a lot of false knock going, between having the TOG's (which aren't sealed all that good on mine) and the Magnuson forming a little echo chamber in there. I believe the sensitivity on those devices is higher than it needs to be, even for stock...

just my $.02
Well, I'm pretty sure about it. I've read up on the operation of the knock sensor online and in the manual so I know how it works, and I've tested it myself. I've gotten knock while driving so I know it's functioning, then tried banging on the exhaust, headers, and the engine itself with all kinds of tools while someone watched the knock sensor.... and it never reacted AT ALL.
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Old 08-05-2010, 04:43 PM   #44
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Quote:
Originally Posted by GA2000GTSpeed View Post
So have you ever had your codes ran? it still sounds like the MAF still isn't working or isn't working right. every time my trans has shifted really hard if from the MAF sensor either being bad or not plugged in.
Well it's plugged in and I cleaned it last night and plugged it back in and same result. Can you scan a code without the SES light on? And no I have not had it scanned yet.
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Old 08-05-2010, 05:01 PM   #45
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Yeah, just unplugging the pcm to clear the code isn't really helping anything. You need to know what that code is to have some idea where the problem is coming from. Take it to an auto parts store and ask them if they have a code scanner you can use. Most will do it for free. Even if the code has been cleared and the SES light is off, it usually still saves the code in the history for a while.
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Old 08-05-2010, 05:08 PM   #46
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Quote:
Originally Posted by AaronGTR View Post
Yeah, just unplugging the pcm to clear the code isn't really helping anything. You need to know what that code is to have some idea where the problem is coming from. Take it to an auto parts store and ask them if they have a code scanner you can use. Most will do it for free. Even if the code has been cleared and the SES light is off, it usually still saves the code in the history for a while.
O.k cool I will do that tomorrow.
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Old 08-05-2010, 07:53 PM   #47
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Well, I'm pretty sure about it. I've read up on the operation of the knock sensor online and in the manual so I know how it works, and I've tested it myself. I've gotten knock while driving so I know it's functioning, then tried banging on the exhaust, headers, and the engine itself with all kinds of tools while someone watched the knock sensor.... and it never reacted AT ALL.
And in my case, if I don't make a certain "modification" to the knock sensor circuit/setup, the thing will go to max KR for anything above 2500 rpm @ WOT, and put out almost lower power than stock.....

Probably applies only to my car, but what I'm saying is, don't rule it out.
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Old 09-01-2010, 05:10 PM   #48
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O.K I forgot to post what I found out. The car threw the code P0107 which was a low voltage MAP sensor. I have yet tried to rewire this or to see if I pulled a wire when I was reinstalling it. Is it possible I may have a pulled wire or a dead sensor?
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Old 09-01-2010, 08:16 PM   #49
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Quote:
Originally Posted by G.I.Ceo View Post
O.K I forgot to post what I found out. The car threw the code P0107 which was a low voltage MAP sensor. I have yet tried to rewire this or to see if I pulled a wire when I was reinstalling it. Is it possible I may have a pulled wire or a dead sensor?
loose wire
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Old 09-01-2010, 08:39 PM   #50
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loose wire
Well I will pull the intake off tomorrow to get at it. I had to do that anyways to fix a small leak on the fuel rail. I just hope it doesn't turn in to a huge thing again. I have but a ton of work into it and have yet to be able to drive it because of that sensor.
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Old 09-12-2010, 01:34 PM   #51
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Well I got the issue fixed. The problem was the map sensor had a short in the harness and was messing everything up.
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Old 03-22-2011, 02:48 PM   #52
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what did you have to do to fix the short you were having? just plug it in more carefully? or?
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Old 03-22-2011, 03:10 PM   #53
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I pulled a wire out of the harness. I cut out the short and soldered a new wire in were I pulled it apart and it fixed it right away.
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Old 03-31-2011, 04:13 PM   #54
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thought it might have been something like that. I am having a similar problem with the wire harness on my MAF, sometimes it's making good contact and sometimes it isn't and I think it might be one of the wires in the harness not making a solid connection all the time anymore and I have to be careful when I touch it, but if you wiggle the wires and get them in the right spot it will work just fine again.
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Old 03-31-2011, 04:43 PM   #55
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Yeah that sounds to me like you either have a pinched wire or or possibly one that is cut.
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