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Engine Management, Fuel, Spark, EGTs, and Air/Fuel Ratios This forum includes general electrical, modification, tuning, repair, replacement, identification and restoration of all components mentioned above including SMEC, SBEC, Logic Modules, aftermarket engine management, etc. Nitrous oxide posts go in here. This is the place

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Old 01-24-2013, 10:36 PM   #1
1992 2.5 turbo map sensor wiring diagram?  
Garrett Booster
 
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anyone know what wire is what? has 3 wires, obviously. lol
just wanna know which is ground, signal, and whatever the other one is


thanks!
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Old 01-25-2013, 06:09 AM   #2
Re: 1992 2.5 turbo map sensor wiring diagram?  
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With Connector facing you and lock tab at top starting left to right.

BK/LB...Signal Return
DG/RD...Signal Line
VT/WT...5 Volt Reference
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Old 01-25-2013, 04:28 PM   #3
Re: 1992 2.5 turbo map sensor wiring diagram?  
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thanks man!
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Old 01-26-2013, 04:51 PM   #4
Re: 1992 2.5 turbo map sensor wiring diagram?  
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isn't one of the 3 wires a ground wire? or is it grounded some other way!?
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Old 01-27-2013, 06:00 AM   #5
Re: 1992 2.5 turbo map sensor wiring diagram?  
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Signal Return is a ground internal to the engine controller.
Are you having a problem?
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Old 01-27-2013, 10:50 AM   #6
Re: 1992 2.5 turbo map sensor wiring diagram?  
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Signal Return is a ground internal to the engine controller.
Are you having a problem?
not having problems. just wanna hook up my fuel cut defender.
gonna use that until I can afford a new computer and a 3 bar map.
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Old 01-28-2013, 07:49 AM   #7
Re: 1992 2.5 turbo map sensor wiring diagram?  
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So you are clamping the Map so it will not see over 14.5 lbs of boost(2 bar)?
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Old 01-28-2013, 09:37 AM   #8
Re: 1992 2.5 turbo map sensor wiring diagram?  
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So you are clamping the Map so it will not see over 14.5 lbs of boost(2 bar)?
yessir! that's my plan.
woulda had it done by now but now having a no start issue with the car.
might be a bad fuel pump but not sure.
just got it back together after doing the head gasket, fmic, BOV, etc
ran great for a few days now nothing. lol
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Old 01-28-2013, 09:47 AM   #9
Re: 1992 2.5 turbo map sensor wiring diagram?  
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What' s missing? Fuel, Spark, Compression?

Any fault codes stored?
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Old 01-28-2013, 01:31 PM   #10
Re: 1992 2.5 turbo map sensor wiring diagram?  
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What' s missing? Fuel, Spark, Compression?

Any fault codes stored?
no fault codes. haven't gotten to get into checking the other stuff yet cuz of our crazy weather I don't hear the fuel pump turn on tho when I turn the key on
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Old 01-28-2013, 03:00 PM   #11
Re: 1992 2.5 turbo map sensor wiring diagram?  
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maybe the car is mad at me for molesting her. lol
I just couldn't resist! a clean low mileage car was just asking for upgrades!
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Old 01-28-2013, 04:06 PM   #12
Re: 1992 2.5 turbo map sensor wiring diagram?  
Garrett Booster
 
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Quote:
Originally Posted by NAJ View Post
What' s missing? Fuel, Spark, Compression?

Any fault codes stored?
no fault codes. haven't gotten to get into checking the other stuff yet cuz of our crazy weather I don't hear the fuel pump turn on tho when I turn the key on
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Old 01-28-2013, 04:37 PM   #13
Re: 1992 2.5 turbo map sensor wiring diagram?  
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No fuel pump prime on initial key on = no ASD relay actuation.

Verify both power sources are present at the relay, may have blown a fuse.
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Old 01-28-2013, 05:52 PM   #14
Re: 1992 2.5 turbo map sensor wiring diagram?  
Garrett Booster
 
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Quote:
Originally Posted by NAJ View Post
No fuel pump prime on initial key on = no ASD relay actuation.

Verify both power sources are present at the relay, may have blown a fuse.
I did check the fuse for the fuel pump....not blown
guess I should find a way to check the relay. maybe that's the culprit.
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Old 01-29-2013, 05:03 AM   #15
Re: 1992 2.5 turbo map sensor wiring diagram?  
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You need to check the 2 power feeds into the relay at the relay.

Did I send you powertrain wiring?
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