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Help. What could be wrong? Car is weird.

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Old Apr 23, 2006 | 10:08 PM
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Default Help. What could be wrong? Car is weird.

Hello yall, I met a cool local F-body owner with HP tuners who scaned my car today. All kinds of weird things was going on.
We got P0107,p0342,p0122,p0449,Po154, Ia was at -40 coolat temp was at -40 and all kinds of weird stuff.

After we turned off the car we started the car up and scaned again and some of the codes diasaperd,and the map sensor started to wrok . I really dont know how to explain what was going on because I dont know much about tuning,scanning our electronics our DTC trouble codes.
I talked with the guy who scaned my car and he will post up here, and will better explain what was going on.

I am running a TSP mail order tune With PRC heads and a 233/239/598-603 113lsa cam,Vig 3800,LTs, And ls6 intake with bbk 80mm tb.

I would really appreciate any help our information .


Thank you very much for reading.

Last edited by LS1FIRE; Apr 23, 2006 at 10:28 PM.
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Old Apr 24, 2006 | 01:20 PM
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I was the one who scanned the car. The coolant temp logged normal after I switched to the SAE pid. The TPS sensor may just need to be reset to fix the code, but I was in a hurry (sorry Chris) and couldn't remember exactly how to do it. Does anybody know if the IAC effective area is different in the BBK 80mm TB?

The MAP sensor is acting very weird in this car. When I first got there we started the car and the MAP was flatlined at 0 kPa. I cleared all the DTCs and when we restarted the car the MAP sensor magically started working. After a few moments though, it flatlined again this time at 10 kPa. We tried different MAP sensors, but got the same result each time.

Some other things I saw in hpt were dead O2s (omV) and maxed out fuel trims (100%). He has MAF voltage, so I know the ENG SENS fuse is ok.

Also the car is a 98 with ac, egr and air deleted.

Chris, did you notice anything after taking the intake off? When I have some free time, I'll take a closer look at it. Hopefully your hpt cable will be in the mail soon!
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Old Apr 24, 2006 | 01:46 PM
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Originally Posted by bshell
I was the one who scanned the car. The coolant temp logged normal after I switched to the SAE pid. The TPS sensor may just need to be reset to fix the code, but I was in a hurry (sorry Chris) and couldn't remember exactly how to do it. Does anybody know if the IAC effective area is different in the BBK 80mm TB?

The MAP sensor is acting very weird in this car. When I first got there we started the car and the MAP was flatlined at 0 kPa. I cleared all the DTCs and when we restarted the car the MAP sensor magically started working. After a few moments though, it flatlined again this time at 10 kPa. We tried different MAP sensors, but got the same result each time.

Some other things I saw in hpt were dead O2s (omV) and maxed out fuel trims (100%). He has MAF voltage, so I know the ENG SENS fuse is ok.

Also the car is a 98 with ac, egr and air deleted.

Chris, did you notice anything after taking the intake off? When I have some free time, I'll take a closer look at it. Hopefully your hpt cable will be in the mail soon!

Thanks Brian for posting up.

I took the intake off right after you left, Everthing looked okay, but there is a posibility that the knock sensor wire was pinched under the intake mani. Still have the intake off right now, not sure if i should put it back on yet.
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Old Apr 24, 2006 | 07:40 PM
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Anyone please?
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Old Apr 25, 2006 | 02:30 PM
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Old Apr 25, 2006 | 03:27 PM
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Chris, if you have access to a dmm you can probe the 1st and 3rd pins on the harness side of the map sensor connector. Probe with the key on and see if you get 5V from the pcm.
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Old Apr 26, 2006 | 02:01 AM
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Originally Posted by bshell
Chris, if you have access to a dmm you can probe the 1st and 3rd pins on the harness side of the map sensor connector. Probe with the key on and see if you get 5V from the pcm.

What is a dmm?
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Old Apr 26, 2006 | 03:07 AM
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Digital multimeter. You can borrow mine. I'll be out tuning on Sunday, I could stop by then.
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Old Apr 26, 2006 | 03:45 AM
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Originally Posted by bshell
Digital multimeter. You can borrow mine. I'll be out tuning on Sunday, I could stop by then.

right on man let me know.

Take care
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