Having cranking problem first thing in the morning it want crank right up,i have to turn it over 3 to 4 times before it will start and then it will cut right off.and then ill try cranking it the second time it will fire right up with no more problem unless it sit up a while.
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Did you check the fuel pump relay ? The relay gets power from a fuse and also from the PCM relay. The computer grounds the relay to turn it on for 3 seconds when you turn the key on, then only after the computer "sees" RPM or oil pressure.
No such thing on your car. The temp sensor tells the computer what the engine coolant temp is. If it were faulty you would get a check engine light. I would have the fuel pressure checked before and after you crank the engine. The pump relay provides power to the pump when you turn the key on to recover some of the lost fuel pressure after the car sits. The one way valve in the pump is supposed to prevent the pressure from dropping. If the fuel pressure drops to zero it could take some time to crank the engine enough to get it back up.
HI, curious condition....you might try something to see if it is a fuel problem perhaps. Try a cold start (first thing in the morning as you say) but instead of jumping in and cranking it over, turn the key to the run position (all the way on right before you bump the starter) and wait 10 seconds before actually cranking the motor over. If it starts right up after trying this wait, it may not be priming correctly and should look at the fuel pressure regulator. (I'm thinking after is has been running, it is already primed and perhaps keeping too much prime pressure, hence the quick start when hot)...just a thought before assuming there is something amiss in the ignition or injection systems......Mike....please reply
When you turn the key front. Listen for the fuel pump to prime. It should sound like a low humming noise that lasts about 3 seconds. If it does then check for spark by pulling one of our sparkplug wires and putting an extra spark plug in it. Place the end of the wire down somewhere safe and crank the motor. If you can't seek spark in the plug, it is most likely your coil failing. So, check fuel pump and fuel pump relays first, then spark. Good Luck.
turns over and crank are the same thing, so you are saying it does crank over but no start,right? you need to determine if you have at least 50psi of fuel pressure in fuel rail at reed valve.
A very common problem on the 99 S10 is a leaky fuel pressure regulator in the intake plenum.What happens is when the truck sits for a few hours or more the regulator leaks all of the fuel in the fuel injection system into the intake air plenum. This does 2 things, 1 it has no fuel pressure when starting and 2 it floods the air intake with raw fuel. Sometimes if you turn the key on wait 3 seconds then turn key off then turn key back on and just turn key to crank starter for a split second and wait 3 seconds.do this 3 times to repressurize fuel system then crank to start(you will hear fuel pump buzz each time you do this.also you may have leaky fuel injectors. Try to crank engine with the gas pedel to the floor. This will tell the computer to stop spraying fuel trhough the injectors and it will start. Joe ASE Master Tech
I had the same problem with my 1999 chevy dually. I tried everything and finally after a lot of lost sleep headaches and money we found the injectors were leaking. It was expensive but it starts right up now.
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