My Blazer will crank over but not start by itself. It needs starting fluid to start. I have replaced the fuel pump, filter, the whole spider injection system and it still will not start. My pressure is where it is supposed to be and it holds the pressure as well. I spray starting fluid in it and it will run at idle forever. Once I mess with the throttle it runs really rough and usually sputters out and dies. Once in a while it will run even when I open the throttle up but acts like its not getting enough fuel or the correct timing of everything because It'll start back firing and wanting t
Hi there. If you have not replaced your EGR valve, mass air flow sensor or the TPS on your Blazer, you might want to start with these repairs. It is also possible that the throttle body itself is damaged, especially if you’re able to start it on fluid. If you want to avoid chasing parts and repairs, the best solution may be to have a professional mobile mechanic come to your location and complete a car is hard to start inspection.
How to Identify and Fix Common car Problems ?
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The most common reasons a Chevrolet Blazer won`t start are a dead battery, an alternator problem, or failed starter.
The most common reasons a Chevrolet S10 won`t start are a dead battery, an alternator problem, or failed starter.
The most common reasons a Chevrolet S10 Blazer won`t start are a dead battery, an alternator problem, or failed starter.
relay center behind the glove door.
If the car cranks when you turn the key, but the engine won`t start, it could be because fuel isn`t getting to the engine. One potential reason for this could be dirty fuel injectors. Over time, the fuel injector nozzles can become clogged with rust, corrosion or debris.
When your engine cranks but won`t start or run, it could mean your engine is having trouble producing a spark, getting fuel, or creating compression. The most common causes are problems in the ignition (for example, a bad ignition coil) or fuel system (for example, a clogged fuel filter).
When an engine cranks for a long time before it starts, either spark or fuel is missing or weak and each has its own reasons. Most of the time, the air / fuel mixture has been disturbed and there is too much air or not enough fuel.
Bad ignition coil: When your dome light turns on but the engine doesn`t start, that means your battery is working but your ignition may be at fault. The ignition coil transforms a battery`s voltage into an electric spark. A damaged ignition coil means there`s not enough juice to do that.
The cause of this problem is usually one of 3 things – a failed starter motor, a bad connection between the battery and starter motor, or a blown fuse (if present) in line between the starter and the battery.
As the engine is cranked, the crankshaft position sensor indicates to the PCM that the engine has reached a minimum cranking speed of about 250-300 rpm. At that point, the PCM re-activates the fuel pump.
The fuel pump shut-off switch has a red reset button on top of it.
The fuel tank pressure sensor is part of the fuel pump assembly and is mounted on top of the tank or inside the tank. It`s part of the evaporative emissions system (commonly referred to as “EVAP”) and reads pressure in the fuel system to detect evaporative leaks, such as a loose or faulty gas cap.
Starting a vehicle with a bad crankshaft sensor can be risky and it`s unlikely to work. Disconnect the damaged sensor and try spraying a little starter fluid in the throttle body on your engine. Then, try cranking the engine to start the vehicle.
The crankshaft position sensor monitors the position and speed of the crankshaft and other parameters that play an important role when starting the engine. If the crankshaft position sensor is having a problem, the vehicle may have intermittent starting issues or not start at all.
A Bad Crankshaft Position Sensor The crankshaft position sensor monitors the position and rotational speeds of the crankshaft. Without the crank sensor, the engine control module (ECM) wouldn`t know when to fire the fuel injectors and ignite the spark plugs.
An effective method to determine whether it`s your battery or alternator that`s gone bad is to connect jumper cables from a running vehicle`s battery to yours. After a few moments, try starting your vehicle. Once it`s started, remove the jumper cables — if your engine stalls, your alternator has probably gone bad.
This voltage range means the battery is in good condition for starting the vehicle. If the measured reading is less than 12.2 volts, the battery`s resting voltage is weak, which means it most likely needs to be charged or replaced.
Typically when your electrical accessories are working well, but it takes a few cranks for the engine to start, the issue is with the fuel or ignition system. In most cases, clogged or dirty fuel injectors, throttle body or mass air flow sensor will be the root source of this problem.
In that day, a cranking, no-start condition could easily be diagnosed by testing the available spark at the spark plug. If there was no spark, we touched a test light to the coil negative terminal to determine if the distributor contact points were switching the coil on/off (see Photo 1).