daveH's latest activity
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DdaveH replied to the thread Mefi 4b help electrical issue.so assuming the ECU has power and ground, throw a timing light on any plug wire and see if it has spark at crank. if it doesnt, either...
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DdaveH replied to the thread Can Grok tune an engine?.looks nice but i wouldnt run that much timing on your specs. even too much for an NA LS3.
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DdaveH replied to the thread Mefi 4b help electrical issue.Another common problem on this old mefi systems. First…..your ignition key. Many used a toggle that was two position…..run and start...
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DdaveH replied to the thread Mefi 4b help electrical issue.I dont know what color wiring your harness uses, but likely your green wire here is the trigger wire from the ECU, so grounding it would...
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DdaveH replied to the thread Mefi 4b help electrical issue.fuel pump control (ground) is J1 pin 6. the fuel pump should turn on briefly when the key is turned on. if that isnt happening, then...
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DdaveH replied to the thread Mefi 4b help electrical issue.been a while since i touched a MEFI. but something is way wrong, the fan relay should have NOTHING to do with the running of the...
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DdaveH replied to the thread MSD relay issue with ECU.you might try a pull down resistor. you do this by attaching one end of the resistor to the trigger wire and the other side of the...
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DdaveH replied to the thread MSD relay issue with ECU.i thought about this, but the fact that you put a traditional relay in and it worked indicates the output is going low. assuming you had...
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DdaveH replied to the thread Temperature difference between upper and lower radiator outlets.first nobody makes a relay worth a shit anymore. just another reason to go solid state but thats a topic for a different discussion. OP...
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DdaveH replied to the thread Wiring questions.get the Hella relays with 1/4" terminals. the same relays with the smaller terminals have a habit of melting the terminals, even when...
