BigRigRepair
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Posts posted by BigRigRepair
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12 hours ago, fjh said:
Do you have a replacement? Try a solenoid first wouldn’t go pulling the econovance parts are near impossible to get! I believe I would disarm the econovance and set the timing to 20 or so and call it a day! Just my thoughts on it!is this a customers truck? If so the afore mentioned fix may not be viable! With out permission!
How do I disarm the econovance? Never missed with the timing on a Mack either. Would you mind walling me through it?
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26 minutes ago, fjh said:
Do you have a check engine light on? You can try put 12v to the econovance ! this will prove out whether it is mechanical or wiring/ software issue! if the stumble goes away you have a wiring issue! If it does not you have a physical issue with the econovance! broken spring or sealing issue! ect ! Also check the line from the block to the econovance if the line has pluged it won't work either! on older models There are also screens that can plug up in the econovance block remove the plugs and check these if you take the block off be sure to try and save the gasket or get the right gasket for the year there are two different gaskets!
No check engine light. I tried putting 12v to it yesterday and nothing happened. I’ll pull that line off today and check it out. When replacing the econovance anything I should know? Things to do or don’t do?
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1996 Mack e7-350 between 1400 and 1800 rpm’s is smokes and misses really bad. I’m thinking something might be wrong with the econovance. Truck came in with fuel in the oil. Got that fixed and replaced several fuel lines. Any help would be appreciated. I’m not very familiar with Mack engines.
1996 Mack e7-350
in Mack Truck Q & A
Posted
Thank you!! I’ll let you know how it goes!