Recent Topics
Clear plastic scratch remover?
by Quattro Pete
06/23/18 08:15 PM
Parking wars show.
by Chris142
06/23/18 08:15 PM
set for years
by 93cruiser
06/23/18 08:07 PM
Looking to replace 2005 Sienna with SUV
by i6pwr
06/23/18 07:26 PM
Trying to fix chainsaw
by turtlevette
06/23/18 06:48 PM
tire rotation
by marine65
06/23/18 06:48 PM
Reese hitch $30 Walmart YMMV
by pda1122
06/23/18 06:14 PM
Managing Anger During Unexpected Tire Change
by TheLawnRanger
06/23/18 06:14 PM
2016 Honda Pilot appears to be consuming oil
by pilot1226
06/23/18 06:00 PM
New belt squeal cause damage to belt?
by pda1122
06/23/18 05:33 PM
Food Safety - If You Have Children
by Zee09
06/23/18 05:15 PM
Reduce TORQUE to COMPENSATE for lubed threads?
by SumpChump
06/23/18 05:02 PM
Chain cleaning and lube
by dadinfo
06/23/18 04:57 PM
Mobil Delvac 1 ESP 5w40 $23.65 at Walmart
by 71Chevyguy
06/23/18 04:36 PM
diesel oil in older engines- RE: cats etc
by 928
06/23/18 04:35 PM
2011 F-150 Ecoboost timing chain replacement
by 14Accent
06/23/18 04:31 PM
My stash of Kendall GT1 almost gone..
by Vern_in_IL
06/23/18 04:30 PM
mobil 1 rebate check
by Fitter30
06/23/18 03:52 PM
Cab mount failure
by ram_man
06/23/18 03:31 PM
02 Saab aero oil?
by Newuser
06/23/18 03:00 PM
Newest Members
bwechols, bowupid, pod423, lemaitrix, azzid0906
65303 Registered Users
Who's Online
94 registered (AZjeff, 93cruiser, aquariuscsm, 69Torino, Astro14, 11 invisible), 1489 Guests and 64 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65303 Members
67 Forums
285878 Topics
4770787 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4642677 - 01/22/18 09:12 AM 2002 Silverado 5.3 Slow start, starter or wires?
Gito Offline


Registered: 08/30/09
Posts: 589
Loc: CA
Own a 2002 Chevy Silverado with 340k miles.

Been noticing a slow crank before the truck starts. At first I thought it was the battery but it was tested and its good.
Then I thought it might be the starter but since the truck has been starting fine each time and hasn't missed I thought I better look elsewhere.

Again, its a weak crank (weak start) but starts each time.
Have not checked the alternator. I figure the battery would have been dead by now if the alternator was the culprit (need to check that)

Wires? starter? battery? alternator?

Any advice is greatly appreciated

Top
#4642683 - 01/22/18 09:17 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
jeepman3071 Offline


Registered: 04/15/10
Posts: 4220
Loc: Storrs, Connecticut
Have you load tested the battery? I've seen some batteries that seem to be putting out adequate voltage until load testing them. Check all wire connections and make sure they are shiny clean and tight.

If all of the above tests fine your starter might be going out. The starter in my Jeep just died a month ago. It was cranking slower and slower until one day it barely turned over. At one point my oil filter housing adapter gasket was leaking all over the starter, which I'm sure is what led to it's death.
_________________________
2000 Jeep Cherokee 4.0L (180k) - Pennzoil 10w30, Napa Gold 1516, Magnefine trans filter
2009 BMW 328i (32k) - Castrol Edge Euro 0w40, MANN HU816X

Top
#4642687 - 01/22/18 09:19 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
pcoxe Offline


Registered: 05/14/07
Posts: 445
Loc: South Carolina
Check the battery terminals for corrosion, or just clean them up anyway. A small amount of resistance can drop the voltage.

Top
#4642689 - 01/22/18 09:20 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
krismoriah72 Offline


Registered: 02/16/09
Posts: 1519
Loc: wv
Either put a multimeter on your current battery or jump it with jumper cables or a jump box to rule out the battery.. My guess is that its a warning sign of your starter.

Top
#4642694 - 01/22/18 09:25 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: pcoxe]
64bawagon Offline


Registered: 01/10/17
Posts: 167
Loc: Michigan
Originally Posted By: pcoxe
Check the battery terminals for corrosion, or just clean them up anyway. A small amount of resistance can drop the voltage.


This
_________________________
05 Duramax Chevy(SOLD), 64 Chevy wagon, 10 Jeep Wrangler, 17 Equinox (rental), 18 Silverado 1/2 ton

Top
#4642701 - 01/22/18 09:30 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
CT8 Online   content


Registered: 10/09/14
Posts: 11009
Loc: Idaho
you need to diagnose the problem,,check all the listed parts you mentioned then if they are fine check some more. It sounds like new vehicle time.
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

Top
#4642727 - 01/22/18 09:56 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
Gito Offline


Registered: 08/30/09
Posts: 589
Loc: CA
Father in law also drives a Silverado. Swapped out batteries a few minutes ago and my truck has same symptoms. Battery not the issue.

Top
#4642731 - 01/22/18 09:59 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
Gito Offline


Registered: 08/30/09
Posts: 589
Loc: CA
Going to clean the contacts and report back.

Top
#4642752 - 01/22/18 10:28 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
VeryNoisyPoet Offline


Registered: 12/16/17
Posts: 290
Loc: Massachusetts
If battery passes a load test and battery terminals are clean and tight, the problem is elsewhere. Test the wiring between battery, starter, and block. You will need a helper and a digital multimeter for this.

Pull the fuel pump fuse while engine is idling to bleed off the fuel rail pressure. Now the engine will crank without starting but without dumping in raw fuel. Put a multimeter on the 2 volt range. Attach one meter lead to the battery positive terminal. Attach the other meter lead to the starter positive terminal post. Use the points of the probes to dig in through any dirt or corrosion to get a solid connection.

Now have your helper crank the engine for 5 seconds and watch the multimeter reading. You should see under 1 volt, preferably under 0.5 volt.

Next connect one meter lead to the starter housing, and the other to the engine block. Again dig in the points of the probes to get a good connection. Have your helper crank again for 5 seconds. There should be very little voltage drop here, under 0.1 volt.

Now check between engine block and battery negative terminal. Dig in probe points, crank for 5 sec, watch the meter. Should be less than 0.5 volts here.

If any of those tests returns a high voltage drop, there is a bad connection that is starving your starter of voltage. Solutions could be as simple as cleaning terminals at starter, at battery, and at the engine block negative connection.
Could be as invasive as cleaning between starter and block or replacing internally corroded starter positive cable or engine block negative cable.

But if those tests come back okay, and the engine still cranks sluggish, maybe there is a problem with the starter motor itself.
_________________________
1998 V70 GLT / 187k miles

"Use yah blinkah!"

"Be nice. The alternative involves an air horn and 7000 lumens of high beam."

Top
#4642758 - 01/22/18 10:33 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: pcoxe]
BrocLuno Offline


Registered: 09/06/15
Posts: 5526
Loc: Kalifornia Kollective
Originally Posted By: pcoxe
Check the battery terminals for corrosion, or just clean them up anyway. A small amount of resistance can drop the voltage.


Time for new cables. The crimp ends now have crevice corrosion and I'll bet the ground point on the engine has never been touched ...

New ground cable (mostly needed) with the crimps soldered too while the wire is fresh. I'd go up a size. But that's up to you... I'd also add a >#8 fine stranded wire from Bat (-) clamp bolt to radiator support and one to alternator mount. Crimped and soldered terminals.

Remember that all the current going though a circuit has to return via ground path, but with no available voltage to drive it. So ground is mostly overlooked and is more in need of attention.

Should spin right up smile


Edited by BrocLuno (01/22/18 10:36 AM)
_________________________
Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

Top
#4642792 - 01/22/18 11:02 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
sasilverbullet Offline


Registered: 08/22/04
Posts: 1423
Loc: San Antonio, Texas
What everybody said so far, once you have battery, cables, starter, connections all verified, with that many miles on the engine it might be time for a rebuild. Over the years I've noticed the ones that are ready for a rebuild will start to turn over slowly.

Hope that's not your case...
_________________________
14 Honda Civic 4dr EX-L-M1 0W-20 & WIX XP
14 Honda Accord 4dr EX-L 4cyl-M1 0W-20 & WIX XP
02 Chevy 5.7L van-GTX HM 10W-40 & WIX filter

Top
#4642800 - 01/22/18 11:06 AM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
Rat407 Online   content


Registered: 12/13/02
Posts: 1432
Loc: North Carolina
After cleaning up all the electrical connections and vehicle grounds, the next step is to check fuel pressure at the fuel rail. You can get a gauge to use from Auto Zone. Mine didn't want to start and it turned out my fuel pump was going and the fuel pressure was low, 45psi and it is supposed to be 50spi.

What was happening is it wouldn't start on the first crank of the key but the second bump it fired right up.

Now if fires right up every time.
_________________________
2002 Silverado 5.3 0w-20 AMSOIL

Top
#4642874 - 01/22/18 12:16 PM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
64bawagon Offline


Registered: 01/10/17
Posts: 167
Loc: Michigan
It could also be a starter on its way out. A weak, worn out starter would have the symptom
_________________________
05 Duramax Chevy(SOLD), 64 Chevy wagon, 10 Jeep Wrangler, 17 Equinox (rental), 18 Silverado 1/2 ton

Top
#4642878 - 01/22/18 12:21 PM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
DerbyDave Offline


Registered: 10/27/15
Posts: 218
Loc: KS
I had a Taurus that had similar symptoms. The starter was going out, I took it to OReilly's and had them hook up their electrical test equipment. The starter was drawing way more current than it should have been. I replaced the started and all was good again.
_________________________
1997 Ford Taurus
2007 Honda Ridgeline
2003 Suzuki GZ250
1986 Suzuki Cavalcade
2014 Nissan LEAF (Gone)

Top
#4642885 - 01/22/18 12:32 PM Re: 2002 Silverado 5.3 Slow start, starter or wires? [Re: Gito]
RonRonnster Offline


Registered: 12/06/17
Posts: 39
Loc: Idaho
FWIW I've had a couple different SBC starters turn over really slowly but test out fine on the bench at the auto parts store. The first time, I chased it around everywhere - battery, terminals, cables, etc. Finally put a new starter in (even though it tested fine on the bench) and problem solved. The second time it happened, I purchased the new starter right away after the battery and cables checked out. Problem solved. My theory is that the starter tests fine on a bench with no real load. Something to consider, anyway.
_________________________
- 2007 GMC Yukon XL Denali - 6.2L / 81k mi.
- 1998 Chev K1500 4x4 - 5.7L / 155k mi.

Top
Page 1 of 2 1 2 >