Question about 1995 Chevrolet Caprice Classic

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Check gauge indicator came on, saw voltmeter dropping, stopped car to inspect belts-good. After starting car issue gone rest of ride home. In morning indicator reappeared after turning on defroster, continued to drop on voltmeter to point pwr windows would not work. After 8 hrs dropped window in aux key position then started car. gauge dropped to point of shutting down car (electric fuel pump?). Immediate multi-meter check of battery showed 11.18vdc and climbing. Alt replaced around 2001. Car on highway, pretty good guess is it the alternator?

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Make sure your grounds are good
Could be your alternator, or battery
If the battery is below 12.6v then your battery is bad
Almost any auto parts store will test them for you for free on your car

Posted on Mar 19, 2014

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  • Tony Cantero
    Tony Cantero Mar 19, 2014

    U replaced the alternator in 2001, but how many miles has it been since it was replaced 13 years ago ?? Rebuilt Alternators last 8 to 10 years or 70K miles. Check connection from battery ground to engine block. If cable is corroded, replace this. Engine vibration will cause bolts to eventually come loose. Loose connections on battery means less electrons travel from alternator to battery. Black negative cable from battery to engine block is part of DC circuit. Loose connection or corrosion on cable means will act as resistor (not let electrons to pass through). Check alternator cables as well. If U decide t replace alternator, change the belt as well.

  • Tony Cantero
    Tony Cantero Mar 19, 2014

    BTW, check the fluid level inside battery as well. Replenish with distilled water or battery electoctrolyte fluid, which is sold at some auto parts store.

  • Midnite12 Mar 20, 2014

    Tony really a resistor ? I have read over many post from you and really don't know where you get your info from ? most of it is missing steps or just out there ! I think you have no clue


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  • Chevrolet Master
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More than likely a set of brushes and diode pack will fix the alternator.

Posted on Mar 19, 2014

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I would say that you have a bad battery . If the alternator is charging ok but the battery is bad all the current will go to the dying cell . Have a load test done on the battery to eliminate it as a source of a problem. Next have the alternator bench tested as there may be a problem in the rectifier pack

Mar 19, 2014 | 1995 Chevrolet Caprice Classic

1 Answer

Had new battery installed on a 2002 PT Cruiser. Later the same day the car was cutting off/stalling at red lights. A diagnostic came back with a computer failure. Had a new computer installed/programmed....

let your mech do his job.?
and if the battery drops below about 10v, the ecu will fail (lie), and guess what, that is NOT a bad ECU./pcm/bcm,tcm, etc.)_
if you do\'t like your mech. get a real ASE mech. and win.

real ASE mechs never throw parts, ever. (cept a tune up)

learn to monitor cars 12vdc system, get a harbor fright , charge testing tool, cheap, has LEDS. or learn to use a voltmeter
my car has a dash gauge, called volts.

if the volts shows at 14v running then the charge system is working
and the ECU is now working good, with full voltage.
engine off, the voltage is 12.6v (room temp) and means battery (rested) is fully charged. STATE OF CHARGE, method.

over heating must be fixed first.
it can wreck and engine fast. stop dont pass go, do not collect $200 , halt./
why not put a new fan belt on it for $10.
get a GATES or GY, Gatorback

now lets delve in to why you mech is (asleep in class?)
belt new, and tensioned to spec. some belts slip and do so with out a sound!, gee, get a new one? why risk $3000 motor for $10 belt. ?????

park a hot car, look at every inch of engine bay and pavement, for green AF leaks, (fix that first) got low water level in rad, every morning cold?
fix that first, and is #1 DIY check anyone can do.
Look in the rad neck cold, not the overfill tank, that be weak.
now what they do:
1: compression test. (do that first any time and engine overheats
takes 30min or less if sparks are easy to reach. some are not.

2: rad leak down test. (cracked block or head) a hand pump tool.

3: exh, fumes in rad neck test. blow head gasket. a tool.
Blue green liquid changes color, oops? you found it.
4: checks temperature of each rad tube, for same temp drop
end to end, if this passes the RAD is good. All pro mechs know this test and use an IR pyro temp gun, ,and saves many a burned hand. and finds bad rads, so easy its like MAGIC !
if all else fails. (passes above)
we then remove the pump, some pumps can be very hard.
FWD cars sux this why, (buy a jeep!)
the impeller gone or rusted to nill.
bearings shot and leaking green. out the front.
seal shot in same , bad bearings always wreck that seal,.
humpty was pushed.
Im sure i missed a step.
but you get the idea.
and if your mechanic do these. find another.

A: he checks cam and spark timing if way off, the chain or cam belt slipped. belts last 60k, period.
B: The ECU many have ERROR to report,
in fact any scan tool an monitor engine heat.
and all these facts are considered

Over heating (macro) can be
engine producing too much heat (retarded timing?)
or bad cooling system.
or both. (straw breaks camels back deal)\'

Keep in mind Entropy wins everytime.
and find a ASE mech. and win big.

btw 2, a pro mech replaces the ECU last, never first.
as you can see, he failed you. here.
i bet you where taken for a ride....

Oct 04, 2013 | Chrysler PT Cruiser Cars & Trucks

1 Answer

Makes squealing noise

You need to check the belt that drives the alternator for proper operation. The belt may be old and worn, or a pulley may be not freewheeling, but seized or with a bad bearing. Possibly the tension on the belt is too loose from a worn out tensioner.

First, spray a little water on the belt with engine running and see if noise goes away, possibly a worn belt. Pull the belt off and check all pulleys. Spin them by hand and see if spins easy, no rough feeling or a catch when spun. Check alternator pulley, idler pulley, tensioner pulley, PS pump pulley and A/C compressor pulley-check them all for free wheeling. If good check the tension on the belt when installed. If unsure, have a mechanic check tension with a belt tension tool.
If belt is good and pulleys good, check alternator output with a voltmeter on the battery with engine running. If voltmeter is below 13.5 volts, the charging system is still not working properly. Have it checked out.

Sep 29, 2013 | 2000 Mitsubishi Galant

1 Answer

1997 Jeep cherokee larado squeals replaced the drive belt a few times and it keeps tearing

Inspect the belt tensioner for the following conditions:
  • If the belt squeals, the tensioner force may be insufficient. Check the belt length gauge, if the length is correct, replace the tensioner.
  • If the tensioner clatters or rattles during engine operation, there may be internal interference or wear. Replace the tensioner.
  • If the belt chirps, you may have a worn pulley or tensioner or cracks in the tensioner bas or arm. Check the mounting bolts, if they are okay, replace the tensioner.
Sticking or Seized Tensioner or Idler
  • If the tensioner does not operate smoothly or doesn't move, you may have: internal thrust surface damage/wear, internal damage/wear, or a broken spring, replace the tensioner.
  • Inspect the tensioner arm for cracks or other damage. If the tensioner is broken, it should be replaced.
  • Look for excessive tensioner movement at idle, which can indicate internal wear, an out-of-round pulley or loose mounting bolts. Check the mounting bolts, it they are in good condition, replace the tensioner.
  • Make sure the tensioner is not tilted or misaligned. Also make sure a gap exists between the tensioner arm and base. If you notice a problem, check the mounting surface, it the surface is okay, replace the tensioner.
Belt Tracking
  • If the belt does not track properly on the pulley tracking surface, you'll need to troubleshoot the problem. Check the mounting bolts and the system alignment. Then, make sure the correct belt is being used for the vehicle. If all of these things are intact, replace the tensioner.
Belt Length Indicator
  • A belt length indicator is built into each tensioner.
  • The gauge identifies the effective operating range of the tensioner.
  • It consists of a pointer and either two or three length marks.
    • On a three-mark gauge minimum belt length, maximum belt length and ideal belt length are indicated.
    • On a two-mark gauge only minimum belt length and maximum belt length are indicated.
    • Ideal belt length on a two-mark gauge is generally half way between the minimum and the maximum.
  • When a belt wears and stretches with age the tensioner will move towards the maximum belt length to maintain proper tension.
  • As the pointer nears the maximum length mark, replace the belt.

May 04, 2012 | 1996 Jeep Grand Cherokee

1 Answer

2004 Jeep Grand Cherokee temp gauge high when heat is on

If your "check engine" light is turn on, I suggest scanned the PCM to know exactly what fault code is stored there. Additionally, could be some problem with the "temp sending unit".

Keep us updated.

Jan 23, 2012 | 2004 Jeep Grand Cherokee

1 Answer

Battery light came on two days ago drove it around on yesterday morning,got home tryed to start it and it was dead,got a jump and it started went in the house,an it was dead when i returned,which fuse is...

The Battery light being on indicates a charging system problem. This could be Battery, Alternator, or Regulator. If you get the car running, put a voltmeter on the battery and check the voltage. With the engine about 1500 rpm, you should see 13.7 to 15.1 volts. If you are under 13.7, then you have a charging issue - alternator. If you are over 15.1 volts, regulator (probably built into the alternator). If this is good, then the issue is likely either the battery or a poor connection to the battery.

Dec 29, 2010 | 1998 Oldsmobile Intrigue

1 Answer

Noise coming from lower left side of car

I don't know about the boots, but my 93 Saturn SL2 was doing the same thing and I found out it was the clutch.

Jul 12, 2010 | 1993 Saturn SL2

1 Answer

Turnsignal lights and gauges don't work also charging light is on horn does not work. Hazard lights work, headlights work, vehicle starts find although my son said the engine would rev up high and stay...

check the fuses under the dash as well as the ground points. if the gauges aren't working (speedo,tach) there are more pressing issues and the truck may need to be gone through with a fine tooth comb. these things are good indicators that someone started to fix a problem and never completed the fix, just disconnected a bunch of stuff and only partially re-assembled.

Nov 11, 2009 | 1985 Toyota Pickup

2 Answers

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This sounds like a fan belt prob! Check it out! frankster016

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