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Old 03-13-2018, 06:38 AM   #1
rlearned1
 
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Default 87 3.0 TBI help

Anyone know what these 3 set screws on the back of the TB are? Having an issue where the TB is flooding and wondering if these are fuel screws. And no itís not an injector because they are both brand new and have good resistance. If itís an ecu issue how would I be able to tell?
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Old 03-13-2018, 01:23 PM   #2
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I don't see what you mean by "set screws." As far as I know, there are no set screws that control fuel.
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Old 03-13-2018, 01:55 PM   #3
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new? or re-man injectors? there is a fuel pressure regulator on the tbi, any codes? just sounds like an injector is stuck open...
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Old 03-13-2018, 05:56 PM   #4
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They are new injectors. The only code I’m getting is maf sensor
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Old 03-13-2018, 10:31 PM   #5
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Quote:
Originally Posted by rlearned1 View Post
They are new injectors. The only code Iím getting is maf sensor
Yeah. Remove the MAF and check if it's dirty.
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Old 03-13-2018, 11:59 PM   #6
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Quote:
Originally Posted by veesix View Post
Yeah. Remove the MAF and check if it's dirty.
But a dirty maf wouldnít cause the TB to flood.
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Old 03-14-2018, 12:08 AM   #7
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Damaged MAF could.
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Old 03-14-2018, 06:03 PM   #8
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An erratic or incorrect maf signal will make the 3.0 run like its firing on 3 cylinders. Check the maf sensor wire connection. Mine was corroded and sending odd signals to the ecm. And it ran like a bag of hammered crap.
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