**please help** trouble with idle and voltage
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
If your meter will measure amps you can remove one battery terminal and put your system draw through the meter. The meter won't pass dittley without blowing a fuse or burning up so be careful what you turn on. When you measure amps you switch where the red positive lead plugs in the meter. If you forget it's moved and try to check volts it will be a dead short, melt your leads.
IIRC my 90 drew zip last I checked, but that doesn't seem right since the radio has a memory....... .2? 1/5th an amp? Or it might be less, Idk the figure. Anyway if it's high you can try pulling fuses to find it.
Also an older battery might not hold a charge. I have a few around here in riggs I can jump and use for the day, but tomorrow, forget it, (maybe get lucky with a prime).
IIRC my 90 drew zip last I checked, but that doesn't seem right since the radio has a memory....... .2? 1/5th an amp? Or it might be less, Idk the figure. Anyway if it's high you can try pulling fuses to find it.
Also an older battery might not hold a charge. I have a few around here in riggs I can jump and use for the day, but tomorrow, forget it, (maybe get lucky with a prime).
Last edited by DFlintstone; Feb 29, 2012 at 01:49 AM. Reason: too high
Thread Starter
Seasoned Member
Joined: Oct 2011
Posts: 348
Likes: 0
From: Chicago
Year: 1989
Model: Cherokee
Engine: 4.0
Originally Posted by DFlintstone
If your meter will measure amps you can remove one battery terminal and put your system draw through the meter. The meter won't pass dittley without blowing a fuse or burning up so be careful what you turn on. When you measure amps you switch where the red positive lead plugs in the meter. If you forget it's moved and try to check volts it will be a dead short, melt your leads.
IIRC my 90 drew zip last I checked, but that doesn't seem right since the radio has a memory....... .2? 1/5th an amp? Or it might be less, Idk the figure. Anyway if it's high you can try pulling fuses to find it, if it's too high.
Also an older battery might not hold a charge. I have a few around here in riggs I can jump and use for the day, but tomorrow, forget it, (maybe get lucky with a prime).
IIRC my 90 drew zip last I checked, but that doesn't seem right since the radio has a memory....... .2? 1/5th an amp? Or it might be less, Idk the figure. Anyway if it's high you can try pulling fuses to find it, if it's too high.
Also an older battery might not hold a charge. I have a few around here in riggs I can jump and use for the day, but tomorrow, forget it, (maybe get lucky with a prime).
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Originally Posted by DFlintstone
If your meter will measure amps you can remove one battery terminal and put your system draw through the meter. The meter won't pass dittley without blowing a fuse or burning up so be careful what you turn on. When you measure amps you switch where the red positive lead plugs in the meter. If you forget it's moved and try to check volts it will be a dead short, melt your leads.
IIRC my 90 drew zip last I checked, but that doesn't seem right since the radio has a memory....... .2? 1/5th an amp? Or it might be less, Idk the figure. Anyway if it's high you can try pulling fuses to find it.
Also an older battery might not hold a charge. I have a few around here in riggs I can jump and use for the day, but tomorrow, forget it, (maybe get lucky with a prime).
IIRC my 90 drew zip last I checked, but that doesn't seem right since the radio has a memory....... .2? 1/5th an amp? Or it might be less, Idk the figure. Anyway if it's high you can try pulling fuses to find it.
Also an older battery might not hold a charge. I have a few around here in riggs I can jump and use for the day, but tomorrow, forget it, (maybe get lucky with a prime).
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