Last post on Oct 17, 2006 at 8:12 PM
You are in the Chevrolet S-10 & GMC S15 Sonoma
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Chevrolet S-10, GMC Sonoma, GMC S-15, Truck
#1978 of 2018 S-10 engine has trouble catching on cold start
Sep 26, 2006 (8:26 am)
I have a 1999 Chevy S-10 pickup. In the past three months it has started having problems with the engine catching while cranking from a cold start. The problem has continued to grow worse as time goes on. I can hear the engine cranking and am able to get the engine to start every time, but it takes longer and longer each time to get it to catch. Once the engine is started, and I drive it a bit, I am able to restart without any problem, but initially in the morning it has trouble catching. I park it outside, but the temperature never gets below 50 or above 85, although the air is usual damp.
Any help with this problem would be greatly appreciated.
#1979 of 2018 Re: S-10 engine has trouble catching on cold start [jmorin007]
Sep 26, 2006 (9:38 am)
Try this, turn key on run, when the pump shuts off, turn key off for about 10 seconds, then turn key on run again. When pumps stops the second time crank the engine to start.
2.2 or 4.3 ???
#1980 of 2018 Re: Radio on S-10 Plays when it wants to. [canufixit]
Sep 26, 2006 (10:04 am)
When I pull the radio and check the main speaker connections in the back where do I check the SCV? It is on the radio and is the little lever behind the volume button. Is there a special wire in the back or something where this is hooked up? Thanks for you help. Radio has played about 10 minutes in the last two days. It seems to like cooler weather?????
#1981 of 2018 Re: S-10 engine has trouble catching on cold start [gonogo]
Sep 26, 2006 (10:24 am)
The engine caught a lot faster than it usually does..it still took two or three seconds, but thats faster than the 10 to 15 it was taking before. What is this indicative of?
#1982 of 2018 Re: S-10 engine has trouble catching on cold start [jmorin007]
Jun 27, 2008 (3:16 pm)
Possibly a fuel pump?
However it sounds like the fuel lines could be losing pressure somehow. As it sits over night the fuel pressure is lost and it takes a few cranks for the pump to get fuel back through the lines. That could be why turning it on and letting the pump run helped it start better. That could also be why it starts okay once the vehicle is has been running. The fuel pressure has been built up and through out the day it doesn't have time to lose the pressure??
Just a theory. Not sure where it could be losing the pressure, maybe there is a small leak somewhere in the fuel lines, or maybe the pump has something to do with keeping the lines pressurized even while the truck is not running. I know that to change a fuel filter, you have to bleed the lines (I'll never change the filter again with out first doing that! Having gas sprayed at you while lying under the truck is not an experience I care to repeat! doh), and that after I put on the new filter it took several cranks to get it started again.
#1983 of 2018 Re: S-10 engine has trouble catching on cold start [jmorin007]
Sep 27, 2006 (8:34 am)
There is a check valve in the return line at the fuel pump assy, if the valve is leaking the fuel can drain back and cause extended starting. I am not that familiar with the 4.3, so I won’t go any further with possible causes. I like to stick with what I know and not guess.
#1984 of 2018 S-10 coolant leak
Oct 03, 2006 (4:56 pm)
I've had my 95 S-10 for just over a year now. In November 2005 I had to replace the water pump to stop a massive leak. That worked for about 3 months... Then another leak started. There are no visible trails or puddles anywhere I go. I've checked as many of the freeze plugs as I could find and no traces there either. It isn't skipping so that makes me think it isn't leaking out into other parts of the engine. I'd like to get this fixed before winter, a jug of antifreeze every week gets expensive. Any help would be greatly appreciated!!!
#1985 of 2018 4wd problems...again
Oct 03, 2006 (6:38 pm)
okay so yall told me to disconnect the battery and wait for a while then reconnect, and the 4wd should work. i must admit that i was dubious about this "quick fix" but it worked... for a while. the truck ran like a champ and would go into 4wd when i wanted, but recently a new problem arose, i was traveling down the interstate at about 75mph and the truck dropped into 4hi on its own, it scarred the heck out of me. so i pull over and take it out of 4hi, did not do it again for over 3 weeks. last weekend i was in town from college and it started doing it again, it continued to shift into 4hi on its own so often that i ended up leaving my truck with my dad and drove his truck back to school. he brought my truck by my mechanic and the mechanic who specializes in 4wd's but not the newer ones that are computer run is not shure what is wrong with it. is it possible that the problem is the transfer case controle module has gone bad and needs replacing? any ideas on what it wrong would be greatly appreciated.
#1986 of 2018 Re: S-10 coolant leak [rbadshaw]
Oct 03, 2006 (8:02 pm)
Mathematically, you've indicated that for the past seven month you've been adding a gallon of coolant per week. That comes to about twenty eight gallons that went somewhere. I would think that if it were a head gasket leaking internally you would be changing out an engine by now. If it were a head or intake manifold gasket leaking externally you would be smelling it by now. If it were a heater core leaking you would be swimming by now.
Last summer I had to change the intake manifold gasket on my V6 because it was leaking coolant on top of the engine. In my case it was evident by the smell and the puddle of coolant on top of the engine. Next time your under your truck shine a flashlight up on top of the transmission bell housing where you can see the backside of the heads. Maybe some coolant is getting away from you there and evaporating when it hits the exhaust manifold and pipes. If so, it will leave a tail-tail sign. In cases where I've seen coolant seeping out externally around head gaskets it hasn't been to the extent where it would take a gallon a week. However, if that's the case and you want to buy some time, maybe you can try some stop-leak.
p.s. don't forget the jack stands.
#1987 of 2018 2000 S-10 fuel pump Noise
Oct 03, 2006 (7:42 pm)
Any idea's of how to quieten a very noisy fuel pump on a 2000 S-10 , It's driving me mad. Thank you