Electrical issue
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Posts: 71,094
From: Hell was full so they sent me to NJ
Re: Electrical issue
First - Start a new thread for issues with the throttle body. This one is already confused enough as it is.
Second - PLEASE read what I write, follow the instructions, and answer the questions. That is the only way anyone can help you. This was the second time that I asked for a reading of the voltage gauge WHILE THE STARTER IS CRANKING THE ENGINE. I didn't ask about open loop voltage vs. closed loop voltage.
Let's try this one more time.
Turn the key to the “RUN” position. Do not attempt to start the engine. What does the voltage gauge read?
Turn the key to the “START”position. Does the voltage DROP. If so, what is the reading? It is NORMAL for the voltage to drop when he starter engages.
When. the engine starts and is now idling, what is the RPM and what is the voltage? NORMALLY, after a hard start the voltage regulator in the alternator will bump the voltage up to rapidly replace the energy drained from the battery by the starter. A reading of 16 volts wouldn’t be unusual. Voltage will gradually drop down to 12.5 - 13.5 volt range.
Now, put the trans in gear. What does the RPM do, and how low does the voltage drop? Does the RPM recover, and the voltage rise with it?
For sanity's sake, where did I discuss “voltage dips” with you in another thread, because I can’t find it on this site?
This is very frustrating and consuming a huge amount of time and effort.
Second - PLEASE read what I write, follow the instructions, and answer the questions. That is the only way anyone can help you. This was the second time that I asked for a reading of the voltage gauge WHILE THE STARTER IS CRANKING THE ENGINE. I didn't ask about open loop voltage vs. closed loop voltage.
Let's try this one more time.
Turn the key to the “RUN” position. Do not attempt to start the engine. What does the voltage gauge read?
Turn the key to the “START”position. Does the voltage DROP. If so, what is the reading? It is NORMAL for the voltage to drop when he starter engages.
When. the engine starts and is now idling, what is the RPM and what is the voltage? NORMALLY, after a hard start the voltage regulator in the alternator will bump the voltage up to rapidly replace the energy drained from the battery by the starter. A reading of 16 volts wouldn’t be unusual. Voltage will gradually drop down to 12.5 - 13.5 volt range.
Now, put the trans in gear. What does the RPM do, and how low does the voltage drop? Does the RPM recover, and the voltage rise with it?
For sanity's sake, where did I discuss “voltage dips” with you in another thread, because I can’t find it on this site?
When in open loop volts are at the 13.5 range.
It drops down to 13.2 in close loop.. But as it warms up in open loop volts drops to 12.8 randomly... When warmed up, voltage is more stable and don't dip as much.
So usually when i put it in gear (Reverse/Drive) Voltage would drop to 12.4, Rpm would drop to 655 and sit there until I give a little throttle it gradually go back to normal...
It drops down to 13.2 in close loop.. But as it warms up in open loop volts drops to 12.8 randomly... When warmed up, voltage is more stable and don't dip as much.
So usually when i put it in gear (Reverse/Drive) Voltage would drop to 12.4, Rpm would drop to 655 and sit there until I give a little throttle it gradually go back to normal...
Thread Starter
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Joined: Jan 2020
Posts: 57
From: San Francisco
Re: Electrical issue
Yup, i will make one.. Very confusing.
And my apologies Fred, got a little carry away..
But I could of sworn I already answer that..
But yeah, it drops right in the middle of the first line and second line when I crank it..
And when the engine idling, rpm sits at 800 and voltage a little in between the middle and the line after.
Scanner says 13.5 volts every cold start
Usually First starts of the day or if it's been sitting for awhile after I driven it, I get slow cranks.
But if it been driven and sitting for not that long it would start right up..
It seem like it only does it when cold..
When I put it in gear, it drops but rpm and voltage do recover quite fast now since Solomon made some adjustments to my idle.
And my apologies Fred, got a little carry away..
But I could of sworn I already answer that..
But yeah, it drops right in the middle of the first line and second line when I crank it..
And when the engine idling, rpm sits at 800 and voltage a little in between the middle and the line after.
Scanner says 13.5 volts every cold start
Usually First starts of the day or if it's been sitting for awhile after I driven it, I get slow cranks.
But if it been driven and sitting for not that long it would start right up..
It seem like it only does it when cold..
When I put it in gear, it drops but rpm and voltage do recover quite fast now since Solomon made some adjustments to my idle.
Last edited by LT1DG; Apr 23, 2020 at 01:08 AM.
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Oct 26, 2003 07:09 AM