Truck wont start

Tiny
GHAWK5150
  • MEMBER
  • 1998 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • MANUAL
  • 140,000 MILES
Have a 1998 Chevy S10 pickup that will not start sometimes and is slow to start at other times. If I get under the car and tap on the starter, it will start about 80% of the time. I replaced the starter and had the same problem. I have even replaced the battery. Now, when I turn the key, the relay will click about half the time but will still not start. I have noticed before that the engine had a hard time turning over. ALmost like the flywheel would go around half way and then just stop. The it goes back to the clicking problem. Is this a bad relay or something in my ignition?
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
JDL
  • EXPERT
Does the battery have a full charge? Are the battery cables/wires all clean and tight on both ends? Can you turn the engine over by hand?

Any testing you do on the starter or starter relay, you need to make sure the tranny is in park or neutral and the e-brake is set.

The starter is a direct replacement for your vehicle? I guess it is possible that the teeth on the flywheel have a problem. The starter bolt holes, are they parallel to the flywheel or offset? I was just curious?

With the key in the crank position and no starter action, is there voltage on the starter field terminal? That circuit goes down in the starter housing, connects to the bottom of the solenoid.
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
PHILY
  • MEMBER
  • 1998 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
My s-10 has begun having issues starting. When you enter the truck and put the key in the ignition for hte 1st time, lights are on in the cab, dash lights are on, but try to start and usually the starter gives a 1/2 sec attempt and then all goes black. On occasion, if I wait 5-10 minutes and try again, it will start, but that is happening less and less.

Today, I tried and nothing, so I put jumpers on from my other car, let it sit for a few minutes, and it started right up. Turned if off after 5 minutes, and tried again with the jumpers still attached, and got nothing, not a thing.

I am having my son bring the battery in to see if that is the issue, but I doubt that will be it. Where do I start tracking down the problem?
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
JDL
  • EXPERT
Hi, if your saying, no starter action, when the problem occurs, I'd have to make sure the battery has a full charge and the connections are good. Next, I'd have to check the circuits at the starter relay, underhood fuse box. Voltage for the load/switch side of relay is hot all the time. Voltage to coil side of relay goes hot with the key in the crank position.

When the problem occurs, did you try cranking in neutral?
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
DAMONKELLY
  • MEMBER
  • 1998 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • MANUAL
  • 14,000 MILES
My truck will not start when it rains/snows, but once it dries up it starts pretty well. I have replaced the plugs, wires, ignition control module (ICM), crankshaft position sensor, and the coil packs. What else could possibly be the culprit when moisture is high? And, what exactly does the ICM do?
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
JDL
  • EXPERT
Hello, your local autostore may sell a moisture displacer in a spray can. Nonflammable, you spray it on everything, plug wires, wiring connectors, everything. I know some people use wd 40 as a moisture displacer, not sure how safe?

Ignition control module controls the primay circuits to the coil, switches the ground circuit on and off. May also condition the crank sensor signal, where applicable, from analog to digital.
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
DAMONKELLY
  • MEMBER
How permanent is the moisture displacement spray?
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
JDL
  • EXPERT
I don't know how permanent? Some of that I priced on the internet, is out of my price range. I don't know what the autostore might have?
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
IFYOUSAYSO
  • MEMBER
  • 1998 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • MANUAL
  • 143,000 MILES
It will turn over then immediately die. Then it will crank for 10 minutes without turning over. I usually wait then try again. Either it will start, or it will turn over then die immediately. This can happen 2-3 times before it actually starts.
On a few occasions it has backfired when I try to start. Then it will crank but not turn over and this will last 10 minutes, etc.
Now usually I park on the street but a day ago it was parked in the garage. It did not start. And before this there was a distinct smell of gas in the garage. Eventually it started and when I goit home at night the smell of gas was gone. So I'm reasonably sure the gas smell was from the chevy.

The problem is random; it can go several days, even 2-3 weeks (or months) without the problem occuring. Then when it does occur, it will happen several times over the course of 3-4 days. Then it stops occuring for some period of time.

This has been happening for a long time; but it is only recently that the problem seems to be much more frequent (at least once a week I would guess). Any suggestions?
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
SERVICE WRITER
  • EXPERT
Sounds like a weak ignition or rich condition maybe from a fuel pressure regulator problem.

Does this seems to coincide with dampness? If so mist water over the plugs and follow the wires back to the coil and see if any runnibility problems start.

When it is a hard start, pull a plug and check for a rich condition (black).

May need to check fuel pressure when the symptoms are present. There is a video on how to on the site if you have a gauge.
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
PAKETTLE40
  • MEMBER
  • 1998 CHEVROLET S-10
  • 6 CYL
  • 2WD
My S-10 pickup sat for 6 days in the snow & cold. It was starting and running good when I parked it, but now I can't get it to fireup. The battery has been re-charged. The engine turns over but won't even fire using starter fluid ! HELP Please. Larry
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.

Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
LGTSABR
  • MEMBER
  • 1998 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • MANUAL
  • 120,000 MILES
My truck has been having start-up issues recently. Sometimes it will crank and start right away, other times, not right away. Lately it's been turning over, stopping then turning over again and starting. Tonight I tried to start my truck as normal and it gave about half of a turn over then, nothing. I waited a few minutes and tried again with nothing. I turn the key to the on position and everything lights up nice and bright like it should. The starter does not click like when the battery is low and everything is nice and bright like I mentioned earlier. Tried the "popping the clutch" method to start the engine. Seems like the engine wants to keep going but turns off and I get the security light on the dash board. Now the service engine soon light is on. Any help would be greatly appreciated.
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
DE772601
  • MEMBER
Hi
Well this could be a fuel problem or a electric problem of what you are saying in the way that the lights are bright and sometimes not. It may be best to have your local garage take a look at this problem.
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
PKULIN
  • MEMBER
  • 1998 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 91,000 MILES
Truck runs great but when it's raining or very wet out it will not start.
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Saturday, March 30th, 2019 AT 12:54 PM (Merged)
Tiny
JDL
  • EXPERT
Hi, how long since a tune-up? When the problem occurs, your saying it cranks good but won't start? In the dark, engine running, raise the hood, let your eyes adjust, if you see arching everywhere, you need some new plug wires.
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-1
Saturday, March 30th, 2019 AT 12:55 PM (Merged)
Tiny
ESTATESBALLER
  • MEMBER
  • 1998 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • MANUAL
  • 150,000 MILES
My 98 S10 will not start as the temp drops the truck did this last year I chamged the batt the pos and neg terminal wires. It acts like the batt is dead will. Not try the radio lights work but will not start. It started fine all summer and as soon as the temp starts to get cold nothing. I thank you for any info that might help me out
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Saturday, March 30th, 2019 AT 12:55 PM (Merged)
Tiny
JDL
  • EXPERT
If it won't even crank, I'd have to check the starter circuit. At the starter relay, terminal 30 is hot all the time. Terminal 85 goes hot with key in the crank position and is wired through the clutch switch.

Use a digital multimeter across the battery posts, everything turned off, the generic spec for a full charge is around 12.6 volkts. Then leave the leads hooked up on the battery, have helper turn the key to crank, watch the voltage, it should drop some, not below around 9.5 volts, that is a generic spec.


https://www.2carpros.com/forum/automotive_pictures/170934_chevy_s10_starter_circuit_1.jpg

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Saturday, March 30th, 2019 AT 12:55 PM (Merged)
Tiny
HIANGLHEL
  • MEMBER
  • 1998 CHEVROLET S-10
  • 98,000 MILES
Replaced spark plug wires, distributor cap and rotor. Used WD-40 and contact cleaner on all electrical connectors.
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Saturday, March 30th, 2019 AT 12:55 PM (Merged)
Tiny
CADIEMAN
  • EXPERT
Remove the cap and look inside for moisture. Spray out the cap with wd40 does it start?
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Saturday, March 30th, 2019 AT 12:55 PM (Merged)

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