Question about 1999 Chrysler Cirrus

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Fuel injectors not firing because they have no power

Everything else electrically working but the car is showing a code PO505 which does not seem to me to have to do with elecrical distribution - the cpu is good and the crank sensor is new
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  • 17 Answers

Get a new PCM from the auto wreckers this should fix your issue.

Posted on Jan 08, 2009

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I have a 91 RS Camaro with a 3.1liter V6. It caught fire under the dash and after repairing the wiring, carefully making sure that everything was making a good connection the car wont start. It has pulse...


If it has fuel pressure and the injectors are pulsing, then it has to be getting fuel. was it running ok before the fire?how long has the car sat? the injector should have 12v and hot when key is on, the ecm provides ground for the injectors. you said it has pulse, so its working. fuel should have approx 35-40psi

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My injector dont work and i need to know why


CHECK FUEL PUMP AND FUEL INJECTOR FUSE.IF FUSE IS GOOD.YOU NEED A NOID LIGHT TO CHECK TO SEE IF INJECTORS FIRING.YOU CAN BUY A NOID LIGHT AT ANY AUTO PARTS PLACES.WHAT YOU DO DISCONNECT FUEL INJECTOR CONNECTOR.HOOK NOID LIGHT TO CONNECTOR.CRANK ENGINE TO SEE IF NOID LIGHT BLINKS.IF YES INJECTORS FIRING.IF YOU GET STEADY LIGHT.PCM NOT WORKING NOT FIRING INJECTORS.IF YOU GET NO POWER OR LIGHT DONT WORK.YOU HAVE A WIRING PROBLEM.YOU NEED A HAYNES REPAIR MANUAL LOOK AT THE ELECTRICAL WIRE DIAGRAM.TO TRACE FAULTY WIRE.

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Hi ,I have a chevy blazer s-10 1993 and she won't start ,I change :spark plugs ,cap ,rotor , spark plug wires, fuel pump (58 psi) injectors (spider)internal hoses, starter and battery. but still my truck...


Find the pressure test port (looks like a tire valve) on the fuel distribution rail over the injectors and place a can over the open end of the valve. Press the inner pin to release fuel into the can. If the pressure seems to fall rapidly, replace the fuel filter. Is the check engine light on? Rent a scanner, read any code(s), and pursue to repair(s). A bad crankshaft sensor or camshaft sensor can prevent the injectors from firing fuel into the engine.

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It seems like the injector is having problems one of the cylenders is not firing and is has a los of power and seems to run rough what could be wrong


Look you are looking at a number of things when a Cylinder, it can be electrical,1 like the spark plug can be not working, 2 the distributor cap if the car has one, 3 The spark plug wire that runs from the distributor to the spark plug that spouse not to work, 4 The fuel distributor if the car has mechanical fuel injection,5 The injector it self, is a way to diagnose it by first identify which Cylinder is not firing, also can be a burn intake or exhaust valve, to find out that you need a compression test at that not working cylinder. 2A
NOW if Your car is electronic fuel injection it can be a defective injector or the computer, You can try by taping on that injector wile motor idles, good luck

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