Question about 1985 Chevrolet Corvette

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No injector pulse and no power at fuel pump fuse

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Bad ecm

Posted on Oct 03, 2009

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2 Answers

87 chevy s10 blazer 2.8 has power to all related components but no spray from injectors cranks but wont start


-Use noise light to check each injector wire connector to see
If there is power there or not when you crank.
-If there is not power at all then 90% the cam & crank sensor are effect.
Good luck

Mai

Jan 25, 2017 | Cars & Trucks

1 Answer

N0 p0wer to fuel pump


I have to ask. How long since a tune-up? Are there any applicable trouble codes?
With engine cranking, if no spark at the spark plugs and no fuel injector pulse along with no fuel pump action, have to check rpm signal.
If you have spark and fuel injector pulse but, no fuel pump action, then we check the fuel pump circuit. Did you check applicable fuse, not only check the fuse, check the fuse circuit for voltage. At the fuel pump connector, gray wire is voltage for fuel pump motor and black wire is ground.
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Apr 04, 2016 | 2008 Buick Lucerne CXL

1 Answer

92 volvo 960 no injector pulse how to fix and no power to the fuse block for 30 & 31 fuses for fuel system


check your PGMFI (Fuel Injection Main Relay) if it's good then check the Fuel Pump for power with a probe tester. what do fuses 30 & 31 operate? maybe there is a short and maybe it has to do with those 2 fuse lines working against each other or maybe they are bumping heads with the injectors electrical wiring. my first advice is to check the fuel injection main relay and the fuel pump first.

Jan 08, 2016 | Volvo 960 Cars & Trucks

1 Answer

2006 PT Cruiser cranks but won't start, runs on ether. New fuel pump.


Is the fuel pump relay sending power to the pump, do you have normal fuel pressure at the injectors, and are the injectors getting power and pulse from the computer ?

Sep 11, 2015 | Cars & Trucks

1 Answer

Won't start add starter fluid it turns on n runs good what's the problem n what controls the injector pulse


Injector pulse is controlled on the ground side by the computer. The power side is supplied through a fuse. IS the fuel pump working? How about a restricted fuel filter? You need to determine if there is any fuel pressure before attempting to diagnose an injector issue

Aug 22, 2015 | Cars & Trucks

1 Answer

2007 toyota corolla no fuel no spark no injector pulse no power at crank sensor or cam sensor


did you jump it backwards? check for power on fuse block under hood

Feb 14, 2015 | 2007 Toyota Corolla

1 Answer

I replaced my fuel pump when my 1999 yukon wouldn't start one day. Now still won't start and I replaced the fuel filter. There is pressure but no gas getting to the engine. Don't know w


Guessing when you say pressure that you have fuel pressure and that the fuel pump is working but the injectors aren't pulsing and injecting fuel into the cylinders. The way your fuel system works is that you should have constant power at each injector and the vehicles computer (the ECM) gets readings from different sensors and send a quick ground pulse in order to complete the circuit. each time the ECM sends a ground pulse, that's when the injector injects fuel so the ground signal/pulse is quick (on and off, one and off..you get the idea). The first thing I would do if your fuel pump is pumping and you have fuel pressure is check the fuse. The fuse you want to check should be a 20 amp fuse in the fuse panel under the hood of the vehicle in the engine compartment. Below is a diagram of the fuse layout and I have marked the fuse you need to check (the ECM 1 fuse). If that fuse is blown you will not have that constant power at the injectors. If blown replace and that should solve the problem unless it blows again which would mean you have a short. If it isn't blown make sure you have power at all time when the key is on. The pink wire at each injector should be the power wire. If no power you need to locate the open wire for that circuit (coming from that fuse to each injector). This is where I would start. If you need further instructions as far as any more testing procedures, reply/comment here or feel free to email me directly at csautomotivecars@att.net. Hope it's as simple as a fuse for your sake and I hope this helped.


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Jan 30, 2013 | 1999 GMC Yukon

1 Answer

No injecter pulse


Have you checked the fuses ?
If you are not getting power to the injectors, it looks like the pink and black wire is powered by fuse number 7 in the box. The injectors are grounded by the ECM.

Aug 07, 2012 | 1995 Buick Park Avenue

1 Answer

91 camaro 5.0 5sp no injector pulse and no power to fuel pump


Using a multimeter check the wiring for power at the pump and at the relay. It sounds like a bad relay.

Jul 19, 2010 | 1991 Chevrolet Camaro

1 Answer

No power tp the fuel pump, injectors not pulsing, no fuel.


Check out your oil sending unit, fuel pump and relay, check for power (might be a fuse), the ignition control module (which if you remove it, can be tested for free at AUTO-ZONE), any related wiring, pick-up coil (inside the distributor), and possibly the ignition switch. If I can be any more help just as away.

May 28, 2009 | 1994 Chevrolet Caprice Classic

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