When warm, idles rough and eventually shuts down
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Joined: Jul 2010
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For the life of me I cant figure out why I don't have power to my Fuel pump. Like I said earlier I only get power when I initially turn the ignition on, then after that I cant get power to the pump at all. Any ideas? I have power to everything else that should have power.
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Joined: Jul 2010
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http://www.youtube.com/watch?feature...&v=A2MpGzI4354
that is a video of the wiring going to the fuel pump with a tester on it. as you can see i get power for a split second as soon as the key is turned on, then nothing. Looks like something in the ecu isnt giving it power. Any ideas?
that is a video of the wiring going to the fuel pump with a tester on it. as you can see i get power for a split second as soon as the key is turned on, then nothing. Looks like something in the ecu isnt giving it power. Any ideas?
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Joined: Apr 2010
Posts: 38
try jumper wire first at fuel pump , if it runs , you dont need to check for injector pulse . to check for injector pulse , disconnect injector connector and plug a noid light if you have one or use a test light . check to see if your ecm sending signal to injectors , the light will flash if you have signal .
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Joined: Jul 2010
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okay, so I went around the ECU and supplied power directly to the fuel pump on a toggle switch. The pump was working correctly just supplying way too much gas and the car was running very rich. Does this mean I have an issue with the ECU or some other part of the fuel to air system?
More Than Meets The Eye
Joined: Feb 2005
Posts: 5,120
From: Mesa, Az
Also what it could be is your ICM (ignition control module) Which is located on your distributor. I have read if your car gets warm, it will shut off. And not restart until the engine is cool again. Hope you figure it out.
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Okay, so im having a hard time finding a pressure tester that will give me enough PSI. All the testers im finding around here go up to PSI at most. Any brand model i should be looking for? I may have to buy online. I also tried to rent from the parts stores and nobody had anything that would help.
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Yes I did, my issue was a combination Fuel pump. Was clogged full of crap from the 7 or 8 years it sat full of gas. And The ECU went bad. Put in a new Fuel pump, and got an ecu off of ebay for 30$ and now it runs like a dream. No issues any more.
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Joined: May 2011
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hey im having the exact same problems as you are in my 1982 280zx. i was wondering if your found out what was wrong with your car. i replaced all the parts that you did too and still sputtering. please respond . thank you
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Joined: Jun 2024
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1983 280zx, When the car warms us it starts to idle rough, and eventually will shut down. When the engine cools back down again it will run like a top.
I did a little reading and read somewhere that this is commonly caused by the Cylinder Head Temp Sensor, does this sound right? I ordered a new one from Nissan and want to make sure that replacing this will take care of the problem before i go and pay for it.
Someone else said to check the mass air flow, but i find it hard to believe it would be cause by this due to the temp. issue.
Anyone else have this problem?
I did a little reading and read somewhere that this is commonly caused by the Cylinder Head Temp Sensor, does this sound right? I ordered a new one from Nissan and want to make sure that replacing this will take care of the problem before i go and pay for it.
Someone else said to check the mass air flow, but i find it hard to believe it would be cause by this due to the temp. issue.
Anyone else have this problem?
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