99 chev k1500 5.3 liter at idle with all acc

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Right, plates of full depth and weight ... Loose hold-downs - bouncing arounddamages a battery several ways ... Excessive loads - using the starter to move thecar should be only a ... ask for a temperature-corrected hydrometer reading, which should be 1.260 specific gravity. ... All this is dependent on the individual car.

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temp gauge bouncing around before going to center? ' Yahoo Answershttps://answers.yahoo.com/question/index?qid...Sep 28, 2013 - I called my mom and we switched cars and she didn't see anything ... Best Answer: If the temp gauge is literally "bouncing around" this is more ...Why is my temperature gauge jumping?Jan 1, 2013Temperature gauge bouncing.?Dec 18, 2008What does it mean, when my coolant temp needle jumps up and ...Oct 3, 2008My car temperature gauge keeps bouncing around from cool to red ...Dec 12, 2006More results from answers.yahoo.comTemperature Gauge Jumping Around an

This sounds more like a faulty alternator. Sometimes an alternator can still produce adequate voltage and amperage to keep everything running, but they are governed by a voltage regulator. If the regulator goes bad, the alternator may have little of no output, or it will not limit itself properly causing gauge problems, and various light on the dash to not work or sporadically come on.
I'd take the vehicle to have the alternator tested at least.
Don't settle for one of the part store tests, they won't give you all the information you will need. A properly working alternator should charge anywhere between 13-14.6 volts and depending on the vehicle 90-150 amps.
I hope this helps in some way

Either you got a bad alternator (it happens) or the battery connections, cables, or cable ends are bad.

Sounds like you have a misfire, that causes the ck engioje light to flash.

install vacuum gauge at intake manifold and get back with me. should be stedy around 19-21 inchs vacuum. if bouncing you have a valve or lifter stuck or burnt valve.. a c.l.t. should confirm the valve condition

If the check engine light is on I would check it for trouble codes first.
The high idle could be a vac leak or faulty idle air control valve.

Check ALT fuse .
Is it still charging?

http://autorepair.about.com/library/firing_orders/bl-chevrolet-firing-99.htm

my 2003 s-10 did the same thing. my problem was a low battery.i put a new battery and have not had a problem since.

im having a problem with my oil gauge on my 91 chev cav z24 3.1 liter 2 door. when i use the gas my oil gauge reads properly or atleast i think so. but when i'm idling at a stop my oil gauge drops and reads as if ther was no oil in in the engine anyone have any answer to why this mit be please im at a loss with this one?????