The car stopped starting and i found out the fuel pump was the problem. They fixed that and had to fix the crank sensor. the car ran fine for about a week, then stopped starting. the fuel had been low and i think the gas lines froze. I added dry gas and more gas and after about 24 hours the car started once but not again. i had the fuel filter changed and it did not help. It would start once in a while, but now wont start at all. for a period of time it would start but imedetly stall. It has a new battery, can anyone help me???
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The term " CRANK" is what the Starter is doing to the Engine. I think you mean is 'it Cranks but wont Start'.
Is the engine getting Spark? Is the engine getting fuel? You need to check these two things before randomly swapping out parts.
If it's fuel starvation.. Check the fuel pump relay or possibly a bad Fuel Pump.
Pretty sure I know your issue... Its really common in gm cars.. It happened to my buick.. I found a site that has the fix I even did it myself.. when I took it to the mechanic they were trying to charge me 400+.. read over it Im sure it will help
Check your Fuel Lines and your Fuel Pump. (I just fixed a problem with my 2001 Isuzu Rodeo Fuel Return Line).
Also remember that in Rodeos, as soon as you turn your car key to turn the ignition on (just to make the dashboard lights go on) a certain amount of gasoline gets pumped to your engine in preparation of you turning the key all the way to crank the ignition and start the car. In other words, even before you turn the key all the way to crank the ignition, the Fuel Pump will pump some gasoline through the Fuel Lines to your engine (it will pump the gasoline for about 4 seconds then stop). So when you go to start your Rodeo, remember to turn the key with one continuos motion so that you start the ignition cranking while the gasoline is being actively pumped.
In addition, you should never turn the ignition lights on without turning the key all the way to start the engine. Doing so could cause that bit of gasoline that was pumped to start the engine to just sit there and create problems.
I'd have to test when problem is ongoing. When you first turn on key, no crank, you should hear the pump run for a few seconds then stop. For initial prime, the computer doesn't need rpm signal. Engine cranking, the computer needs to see rpm signal or it won't ground the fuel pump relay. W/o rpm signal, no spark at the plugs and no fuel injector pulse. I know your talking about fuel, but, when problem is ongoing, check spark and fuel injector pulse, engine cranking.
Intermittent problems are a pain, have to test when problem is ongoing.
Hi :) That starting system has a coil pack and if one side stops working the engine only fire on 1-3 or 2-4 which make the engine shake and not start.There should be a crank senor that could be on its way out. and check the relays in the black box buy the battery there is one for the fuel pump and pre start pump.
well if spark quits fuel usaly will to computer will do this to stop cadilac converter from filling with fuel!and causeing a fire saftey feature!!!!okay disconect battery wait a couple of minutes reconect! turn key on postion do not start or crank!off then on until you hear a GRRRRunt that is your fuel pump that is what you should hear turn your head to the right towards back seet and once you hear it that means pump is good then crank it then spark should quit if the coil packs a r bad then you have your problem if so test for spark also if you have eng light on cut the case hook up obd 2 scan find the fault and fix THIS IS WHAT I WOULD DO CHEERS!
Sounds like bad fuel pump. On the fuel pump there is a hose that goes from the pump up to the lines that feed your motor. That hose is about 4 inches long and is in the tank itself. I have had alot of those come through. You could replace the whole pump, but if that hose is busted, replacing that will be enough to fix it.
i have had the same problem.the solution is the fuel pump! i know you got pressure and it runs so how can it be the fuel pump? the pump is losing its prime you are getting pressure just no volume thats why its crank off crank off the system is priming itself again kinda like a weedeater or similar motor fuel is there just not enough of it to the injector To check this hook a pressure gauge turn on key turn off key release fuel should be plenty but if tis just a few drops thats it hope this helps