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Post Info TOPIC: '87 Carb/Computer Question


Newbie

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Date: Jun 18, 2013
'87 Carb/Computer Question
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I had a mechanic work on my '87 Monte Carlo SS and I need advice.  I replaced the original carb with an Edelbrock 650 CFM electric choke performer series.  I also had to get a torque converter lockup kit due to the new carb.  The car has air conditioning as well.  One issue I have is sometimes if I put the gas pedal to the floor, the cars motor power stops, as if someone hit a kill switch to the engine and if I let off the pedal slightly, the motor kicks in and off I go..... Any ideas?  

Also, Do I even need my computer hooked up?  With the changes I made, what purpose does it have?  What, if anything, is my computer helping to control?

Much Thanks



-- Edited by 87montss on Tuesday 18th of June 2013 02:11:55 AM

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Treasurer

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Date: Jun 18, 2013
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besides the check engine light, dont think the computer is controlling anything anymore.

sorry, cant help with the other issue

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Moderator - Monte Hunter Lead Investigator

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Date: Jun 18, 2013
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Basically, the computer control 3 things. The Torque convertor clutch, the carb adjustments [rich/lean] and the distributor timing advance. The problem you will find is deleting the computer without replacing the distributor, will cause pinging, hard starts and even no starts.

The symptom you have described sounds like a bad accelerator pump. The motor needs an extra squirt of gas when you punch it, Not so much on gentle acceleration.

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Newbie

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Date: Jun 18, 2013
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Phew.... Forgot to mention I put a HEI distributor and coil..... Should I unplug the computer then or keep it hooked up?



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Moderator - Monte Hunter Lead Investigator

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Date: Jun 20, 2013
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In that case your good to pull the computer

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