[AT] OT- voltmeter spiking Jeep Cherokee

[Doug Tallman]

Like Farmer says, check the grounds. I agree with Steve W except I'd say 
to add a body ground.  I wouldn't suspect an alternator if the battery 
voltage is showing 14 with a voltmeter at the battery.  Do any of the 
other gauges act up when it is spiking? Could just be a bad gauge or 
problem in the dash too. Doug T




On 2/21/2015 7:54 PM, Steve W. wrote:
> Mike wrote:
>> Hi Guys, wondering if any of you have some suggestions for me regarding
>> my daughters Jeep. The other day it simply refused to start, no spark
>> nothing. Did a little research and found out that it was almost
>> certainly the crankshaft position sensor. I ordered one only to find out
>> that Jeep put is where no mans have would fit. So after dropping the the
>> front drive shaft, and loosening the shifter linkage from the
>> transmission body, I was able to get to the two bolts holding the thing
>> to the bell housing. Using a 10" and (3) 3" extensions and a swivel I
>> was able to get the top bolt out, without any problem. Of course the
>> lower one was rusted tight; so I soaked it with Kroil for a few days and
>> was finally able to get it off. Heat was out of the question due to the
>> amount of grease in the area.
>> Now for my new problem, when I took it for a test drive it worked just
>> fine, but all of a sudden my check gauges light came on and I noticed
>> the voltmeter was pegged at 19. I quickly got it back home only to have
>> it go back to normal. So I grabbed my multimeter and took off for
>> another run, sure enough it spiked again, so I stopped with it running
>> and checked the battery voltage which read 14.3 as I would expect. Any
>> ideas on where to start looking for the problem? Any help would be
>> appreciated.
>>
>> Thanks,
>> Mike M
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> Toss a ground strap between the engine and the battery neg. See if it
> goes away.
>
> Cherokees have issues with grounds.
>