![]() Spraying starting fluid into throttle provides fuel if the ignition system for spark is working. An intermittent crank sensor will not allow the ecm to operate the EFI system. The ecm runs only if the crank sensor outputs timing signals as the engine rotates. Injector pulses and spark occurs only if the ecm runs. Cranking without the engine firing up boils down to active security (theft mode), no fuel and/or spark. If security isn't the problem, move on.Īir, fuel and spark are needed for engine running. Ensuring security is off during starting removes security from interfering with normal engine starting/running. Normal security has the indicator blinking once every few seconds. With EFI systems and Passlock factory theft program, Passlock security activates and disables injector operation when security flashes quickly. Anyone have any other advice? wiring diagrams? I'm pretty much out of places to look. Will a bad cam sensor cause it to go dead in the water? I figured the ecm would use the CKP/CPS if the cam sensor went out. So basically I've narrowed it down to no injector pulse. ( tomorrow I'll jump the relays that it needs to run) Swapped relays around to help eliminate a relay problem. Pulled the fuse/relay box from the engine compartment to check for corroded wiring/connectors and everything looks good. Pulled the ignition switch out and froze it and hooked harness back up and it checked out. ![]() Also checked resistance of ground and positive cables. Pulled the ecm checked wires and connectors let it warm up inside, reinstalled, and nothing.Ĭleaned all main and engine grounds, cleaned positive from the battery to fuse box. I pulled the bcm on a cold day that it wouldn't start, brought it inside and warmed it up, got nothing. Pulled the timing cover and timing is still dead on.ĬKP CPS whichever checks out 900ohms, I even froze it and put it back in on a warmer day to verify. Sprayed starting fluid into the throttle body and it fired up. But as soon as it warms up I can see the injectors hit. I hooked a noid light up and found I have no injector pulse on cold days. So again it gets colder, seems like anything below 30* and it wont fire up, cranks for days, battery is charged up etc. No antitheft light, no stumble, runs perfect. Couple days later it's upper 30s here and boom fires right up. Everything checked out fine, starts great, runs great, drives alright, then I went out on a cold day to move the car and nothing. Everything went pretty easy and did another compression and leak down test with fingers crossed. I replaced the gear along with the crank seal, cam seals, pulled intake replaced plugs and valve cover gaskets. I found out he misaligned a cam gear while bolting it back onto the cam and ruined the gear. I ordered a gasket kit, figuring if valve to piston contact did happen that I would all the gaskets to do everything. So after this i decided to pull the timing cover off and attempt to set the timing. Her friend didn't get the engine back in time. Hooked up a leak down tester to it and my suspicions were correct. Checked compression, numbers fell evenly across the front bank. ![]() He replaced cam seals and afterward she had running issues. #2003 saturn vue injector replacment 3.0 video how to#In a 45-minute webinar, the experts from Carter Engineered Fuel Pumps will train you on how to diagnose the entire fuel system of a GDI vehicle.Received this vue from a family member who had it worked on by a friend. If either pump can’t generate the pressure or volume commanded by the engine management system, it will cause driveability issues. These two pumps work in unison, so the correct quantity of fuel is injected directly into the cylinder. You still have an electric pump in the tank, but a high-pressure fuel pump is on the engine. Modern gasoline direct injection (GDI) engines have two fuel pump opportunities. ![]()
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