Remote Ford solenoid for GM- no hot start
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'''Preamble''' | '''Preamble''' | ||
| − | + | Sometimes a modified vehicle- especially one that uses headers- will experience starter "drag" when the engine is hot, which is akin to having a low battery even though it's fully charged. If the electrical, starting and charging systems are otherwise working like they should, the problem is "heat soak". Heat soak is a condition where the heat from the engine and exhaust system heats up the starter, solenoid, and wiring which causes an increase in resistance. | |
| + | The following changes will help this situation by removing the relay function of the starter solenoid to a cooler part of the engine compartment. | ||
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4. A battery cable is run from the other large terminal on the Ford solenoid to the large terminal on the GM solenoid. | 4. A battery cable is run from the other large terminal on the Ford solenoid to the large terminal on the GM solenoid. | ||
| − | 5. Also on the large terminal on the GM solenoid, you have to add a heavy gauge (10 gauge) wire to the "s" terminal on the GM solenoid. | + | 5. Also on the large terminal on the GM solenoid, you have to add a heavy gauge (10 gauge) wire to the "s" terminal on the GM solenoid, or use a shunt. This can be bought or easily made.[[File:GM starter solenoid shunt.jpg| frame|Solenoid shunt for GM starter solenoid]] |
Now, this is what happens when you hit the start switch; | Now, this is what happens when you hit the start switch; | ||
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Always be sure that any wiring doesn't come in contact with the exhaust pipes and use heat socks, available from Jegs or Summit, just in case contact may occur. | Always be sure that any wiring doesn't come in contact with the exhaust pipes and use heat socks, available from Jegs or Summit, just in case contact may occur. | ||
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| + | ==Other possible cures== | ||
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| + | The wiring has to be in good condition or nothing will help. That means no frayed wiring, wires of sufficient size, no parts store clamp-on replacement battery terminals (the #1 cause of "bad starters"), tight connections, good charging system including the battery, and a good starting system. Grounds have to have direct contact with bare metal and be of a sufficient gauge for the job. | ||
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| + | If the problem remains even after the remote Ford relay/solenoid is installed, a starter heat shield may help. Another option is a "permanent magnet" starter. They're less inclined to suffer from heat soak. Then there's the heavy duty "high torque" mini starters- also permanent magnet type starters. | ||
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| + | [[File:Permanent magnet Chev starter.jpg| thumb|left|200px|Permanent magnet-type 168T Chevy starter]] [[File:Nippondenso high torque Chev starter.jpg| thumb|left|200px|Nippondenso high torque Chevy starter]] | ||
[[Category:Engine]] | [[Category:Engine]] | ||
[[Category:Cooling]] | [[Category:Cooling]] | ||
[[Category:Electrical]] | [[Category:Electrical]] | ||
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