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Truck stutters
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<blockquote data-quote="brian84corvette" data-source="post: 8250934" data-attributes="member: 586635"><p>i can only tell you that the computer and engine managment system on my 1990 chevy 2500 pick up truck was awfull.</p><p></p><p>so</p><p></p><p>me being super smart i bought a 1990 chevy suburban. seems to run better - but still ocasionaly "surges" the idle but no where near as bad as the truck did.</p><p></p><p>my guess</p><p></p><p>ground.</p><p></p><p>the computer is getting some strange feedback thru ground - causing one or more sensors to read strangely during bass = truck dies.</p><p></p><p>possible solution - create redundant grounds everywhere. the more the better. see if it helps. investigate the idle air control valve. mine gave me problems since i first got the truck. replaced it 3 times in 4 years. it still gave me issues of that surge at idle but it was bad in the truck. like 3krpm at times.</p><p></p><p>hope you get it figured out.</p><p></p><p>if not = put on a carburator and enjoy more performence / less gas mileage</p><p></p><p>also this truck is notorious for having the intake gaskets leak coolant at around this age of them. if its possible you are leaking coolant down in the engine block - it will evaporate and have to steam up and out the pcv valve in to the intake and thru the engine. it runs strange when this happens so keep an eye on the coolant levels.</p></blockquote><p></p>
[QUOTE="brian84corvette, post: 8250934, member: 586635"] i can only tell you that the computer and engine managment system on my 1990 chevy 2500 pick up truck was awfull. so me being super smart i bought a 1990 chevy suburban. seems to run better - but still ocasionaly "surges" the idle but no where near as bad as the truck did. my guess ground. the computer is getting some strange feedback thru ground - causing one or more sensors to read strangely during bass = truck dies. possible solution - create redundant grounds everywhere. the more the better. see if it helps. investigate the idle air control valve. mine gave me problems since i first got the truck. replaced it 3 times in 4 years. it still gave me issues of that surge at idle but it was bad in the truck. like 3krpm at times. hope you get it figured out. if not = put on a carburator and enjoy more performence / less gas mileage also this truck is notorious for having the intake gaskets leak coolant at around this age of them. if its possible you are leaking coolant down in the engine block - it will evaporate and have to steam up and out the pcv valve in to the intake and thru the engine. it runs strange when this happens so keep an eye on the coolant levels. [/QUOTE]
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