What's going on here? 80A at idle?Also I've checked the alternator I have a 130 amps at idle its 80 amps I've also clean the EGR and the throttle body
Agreed. Usually when you roll to a stop the VSS signals the ECU and the iac will open up s tad.
So either the signal isn't reaching the ECU or the iac isn't responding as it should .
However, doing it once engine warms up also is a hint it might be sensor related as well.
What's going on here? 80A at idle?
That seems much too high.That's what I was thinking... is that normal ? is it to low? do I need a new alternator?
That seems much too high.
Do you have an e-fan? Is it relay controlled?
Woah...you are drawing 80 amps at idle? Through what?
I'll need to recheck when my current draw was at idle, but even with an electric fan I recall it being much lower.
With the ACon is it higher?
The VSS does not use voltage for measuring vehicle speed. Voltage output could vary from car to car and with wear and resistance of the connections and wiring.Is there any way to test the volts for the VSS how many volts should it be at??
Bad? Is the car going up in flames bad? You have an unaccounted draw of 20A.Is that bad? I have 80 amps at idle... I don't have a sound system just AC headlights and fog lights.. nothing extra
The VSS does not use voltage for measuring vehicle speed. Voltage output could vary from car to car and with wear and resistance of the connections and wiring.
The computer uses frequency output: as the car speeds up, the VSS output frequency increases. The computer takes the frequency output value it received from the VSS sensor and converts it into MPH. The only way the frequency changes is to make the driveshaft turn faster. Under normal circumstances, that means the car is traveling faster.
In fox body Mustangs a defective VSS will usually set computer trouble code 27 or 28,
Bad? Is the car going up in flames bad? You have an unaccounted draw of 20A.
Something is seriously wrong. How are you measuring this? DC clamp meter?
I've measured current when Mark VIII fan (using relays) is running with engine on...about 100A. With no eFan, it's about 60A.
GT fog lights are a separate but related issue. You need to get them off the headlamp circuit. I suspect you're headlamp switch is burned & melted. This could be where the excessive current is going. Could also be a bad 3G alternator, if diodes are shorted & not blown. Is the 3G fused?
I believe that when you turn a/c on the idle is suppose to kick up some.there is a electric connection on the compressor ,check that out and you might just solve this mystery?
I have the exact same issue with my 91. Same mods as you. Mine started after a poor dyno tune. its like the computer does not add the extra RPM when at idle.
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