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Unread 09-11-2013, 07:11 PM   #1
spoiler73
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1987 YJ Wrangler 
 
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Howell TBI light stays on

I installed the howell tbi on my jeep. Everything is good but after driving for about 15 or 20 min the light comes on. What could cause the light to come on?

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Unread 09-11-2013, 07:52 PM   #2
jbolty
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About 2 dozen things. what are the symptoms?

You need a code reader unless there's a way to do the blink count test.

You can look up late 80s chevy, light duty truck, 4.3 to get some ideas on the codes.
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Unread 09-11-2013, 09:16 PM   #3
Michaelgoesrawr
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Jumping pins on the connector will give you the codes. Check Howell for further instructions. Post back what you get.
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Unread 09-12-2013, 07:35 PM   #4
spoiler73
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I will check tomorrow to see what code it says it is. I found a site with the codes.
Thanks for the help and I will post what it is
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Unread 09-14-2013, 10:41 AM   #5
spoiler73
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I am getting 2 codes. I disconnected the battery to reset it and will try it again to see if I get the same codes. I will post them when I check again
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Unread 09-14-2013, 03:36 PM   #6
spoiler73
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Ok I am getting 1 code now. It is code 44 which is O2 sensor (lean exhaust). How can I fix this?
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Unread 09-14-2013, 04:49 PM   #7
jbolty
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First I would test for a leak around the intake manifold and throttle body. Spray some carb cleaner around while it's running and listen for a change in RPM
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Unread 09-15-2013, 03:23 PM   #8
spoiler73
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Ok, I sprayed card cleaner all around the intake and tbi and no change in the rpm. Any more sugestions?
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