My 94 S10 pick up starts right up at cold. But after driving till hot and let stand a while, it wont start unless pedal is givin. Engine also now has a fast shake at idle, but drives fine. spark is there, fuel pressure is at 52 psi running. The pressure should be a little higher, but I dont think thats it. I'm leaning twords intake leak. Would someone have an idea as to what this could be? I would like to add that i just did fuel pump and dampner. Does the dampner go on one way only? Injector assembly was done about three years ago but only about 15000 miles ago. Also not holding pressure after pump initiation before start.
if you still think you have fuel problem your new fuel pump might have a leak would cause it to lose pressure i recommend hooking up a pressure gauge let truck run while watching gauge watch for drop in pressureif you still think you have fuel problem your new fuel pump might have a leak would cause it to lose pressure i recommend hooking up a pressure gauge let truck run while watching gauge watch for drop in pressure
if you still think you have fuel problem your new fuel pump might have a leak would cause it to lose pressure i recommend hooking up a pressure gauge let truck run while watching gauge watch for drop in pressureif you still think you have fuel problem your new fuel pump might have a leak would cause it to lose pressure i recommend hooking up a pressure gauge let truck run while watching gauge watch for drop in pressure
You can't post conmments that contain an email address.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
no car told maker or model or engine size.
there are lots causes that, hard starts
if spark good and strong and even HV spark wire sets fresh.
the short list.
bad fuel
too much fuel cranked and floods
IAC bad, idle air valve stuck and wants to flood cold.
cold idle is the big clue, where too low. IAC failing
EGR sticking open at idle. possible.
if you press gas Pedal, at 5% (about) and starts easy and likes that until it worms up that means the IAC is dead.
I stop here lots more, no car told.
all cars modern EFI is it EFI> have IAC and ISC valves 1 or both.
and if stuck idle fails. hot or cold.
no car told why post like that 100 year of cars and 10,000 engines.
????
CarGurusJul 28, 2012 - Fuel System Loses Pressure - I have a 2003 Chevy S-10 Pick Up with the 4 ... car a few times, what essentially you are doing is priming the fuel pressure. ... A dirty fuel filter will not cause the lines to lose pressure after the engine is shut off. ... I have a 98 s10 2.2 liter and it was driving fine all day then when ...
CarGurusSep 16, 2012 - My 2001 S10 has a hard starting problem if the truck sits between 1 ... Vacuum leak, have you checked fuel pressure while it sits? ... Would the spider alsocause a misfire at low rpms? .... at an idle, or squeaking while driving and it gets faster as you go? ..... 1994 Chevrolet S-10 2 Dr STD Standard Cab LB.
Chevrolet S-10 pickup won't run and has no fire unless I jumper the fuel pump relay. ... Once the truck starts and is running you can remove the jumper to the fuel pump ... Iwould get the fuel pressure checked to start with, because that's where the ... 93 gmc 4.3l FI runs but dies out loss of power after 5 mins of running then ...
Possibly a bad or dirty Idle Air Control motor. The engine computer controls the operation of this motor to control idle speed. A pintle on the motor extends and retracts, according to signal from the computer. The pintle controls an air passage below it to give or take away air during idle -when the throttle shaft is closed, no air will get into the engine through the throttle body except through the idle air passage . The IAC motor or valve is on the throttle body, with a 4 wire connector. Take it off and look for carbon or coking deposits around the valve's pintle, and in the air passage beneath it. With the idle valve off, plug the connector back on it, then watch the pintle as the key is turned to on. If there is no movement whatsoever, the motor is probably bad.
I have also heard that a bad coolant temperature sensor can cause such a hard start. If the computer does not know the engine is cold, it won't put enough gas into the cylinders for easy starts. The engine needs more gas to start and run when cold.
It sounds like you have a "flooding" problem, where you are getting too much fuel on the warm start. It takes more fuel to start a cold engine than a warm one. By holding the pedal the pedal to the floor, you are telling the computer to do a "clear flood" operation, and that lets you start the car. The culprit is probably the Coolant Temperature Sensor. If this is faulty, it will tell the computer that that the coolant (thus the engine) is much cooler than it really is. This results in the engine flooding when warm. It may also run rough at idle after warm start since it is still getting too much fuel. You will also notice a massive loss of fuel economy. Replace the coolant temperature sensor.
When a vehicle start from a cold start it is in open loop,it gets more fuel,resistance on the sensors are low,so is the ignition coil.When you say you replaced the distributor is that with a pick up? You also need to inspect the pick up terminal for corrosion. and bad connection,this also goes for the ICM which is recommended when you replace the pick up and you need to inspect ICM connection for corrosion and poor connection
Cold start injector could be bad, or you could have a small vacuum leak, like a cracked hose. A vacuum leak is most noticeable at idle, when engine cold.
4 years is a problem try empting the gas tank. and put the supreme gas in it on a full tank. check the coolent fluid and if problem still exsist check the fan
wouldnt crank sensor throw a code?
×