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help. code 07 boost sensor. Forum Members?

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Old 12-06-06, 11:21 AM
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help. code 07 boost sensor. Forum Members?

i have 86 na with s5 engine, did led code check and showed 07 code.
i tested boost sensor everything looks fine getiing 12v--ground----5v----and 2v to ecu. vac line isnt cloged. but im still getting same code. do i have to reset ecu to clear the code? should this code be fixxed asap, will it harm the performance or realibility, thank you.
Old 12-06-06, 02:35 PM
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what engine, turbo? non turbo? what ecu s4? s5?
Old 12-06-06, 02:40 PM
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Title edited... No names in titles. If you want an individual member's attention, I suggest PM'ing them.
Old 12-06-06, 04:47 PM
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non turbo, s4 ecu
Old 12-07-06, 08:45 AM
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Originally Posted by rx7vadim
i have 86 na with s5 engine, did led code check and showed 07 code.
i tested boost sensor everything looks fine getiing 12v--ground----5v----and 2v to ecu. vac line isnt cloged. but im still getting same code. do i have to reset ecu to clear the code? should this code be fixxed asap, will it harm the performance or realibility, thank you.
if you have a n/a (naturally aspirated) motor you do't have a boost sensor
if you have a s5 motor how can you be running a s4 ecu?
if i was your ecu i'd be confused too!!.....code 420!
Old 12-07-06, 04:02 PM
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how can i be running s4 ecu on s5 motor, dont take alot of brains to figure out,
Old 12-07-06, 04:03 PM
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if i wanted to i could run s4 ecu on 3rd gen.
Old 12-07-06, 07:07 PM
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Originally Posted by rx7vadim
if i wanted to i could run s4 ecu on 3rd gen.
NO, the S4 ECU won't run a S6 or third gen motor without major tweeks and changes.

and the codes clear on a S4 ECU everytime you turn the key off.

And what on the S5 motor are you running. A S4 ECU won't run a S5 engine, as the S5 engine uses an electrical MOP.

Now maybe you have a S5 block and or you have the MOP removed and a S4 harness (since the S5 harness won't plug into a S4 ECU)... but either way, you are not being clear enough for someone to help you.
Old 12-08-06, 10:03 AM
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im using s5 block only, everything else is s4, intake, harness. etc...
Old 12-08-06, 10:05 AM
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all the voltages seemed fine, and i added ground.
Old 12-10-06, 11:10 AM
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I'd take a look at where the boost/pressure sensors vacuum nose is connected to the engines intake manifold. Describe just where it's attached.

S4 don't need resetting from my experience. I can pull the plug off a tps/boost sensor/air intake sensor and the code will appear. Put said plug back on an the code goes south.
Old 12-14-06, 09:30 AM
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its attached to intake manifold, to lower part, right in the middle. blowing thought the hose does have some restriction.
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