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Old 09-15-2018, 08:57 PM   #1
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Default 1997 Nissan Pickup Stalling When Warm

Hey, I'm new here and I been having an issue with my pickup. The issue is that it stalls when it gets warmed up. Works fine when cold and idles well when cold. The only time it stalls is when I slow down or come to a stop light. Driving on the highway 0is smooth and normal. One thing I noticed is it feels rough and the shift knob moves crazy when I'm having this stalling issue. Another thing I noticed is that when warming the truck black smoke is coming from the exhaust. And it consumes a lot of gas at the moment. I'm thinking it's the fuel injectors but it could be something else too. Any suggestions? The truck is a 1997 Nissan Pickup XE KA24E 5 Speed Manual,

Thanks, hope someone can help.
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Old 09-15-2018, 09:28 PM   #2
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Check for a vacuum leak.
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Old 09-15-2018, 10:44 PM   #3
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Will check that out today. Does anyone have a diagram for it?
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Old 09-16-2018, 02:40 AM   #4
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Just checked all the vacuum lines and all are good. Still having the issue what's next to check?
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Old 09-16-2018, 05:11 AM   #5
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Best way to check for a vacuum leak is to spray short bursts of Starter Fluid around the engine. If the engine speed increases, there is a leak in that area.

If there are no vacuum leaks, make sure the Ignition Timing is correctly set to 10 BTDC.

If the Ignition Timing is set correctly, try pulling the codes to see if the ECU has detected any faults.
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Old 09-16-2018, 03:24 PM   #6
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Stalling when it warms up makes me think about the coolant temperature sensor. Especially when combined with excess fuel. Pull the codes on your computer to see if it is flagging anything.

Also, when checking for vacuum leaks, the lines are only a very small part of the equation. The gasket surfaces between the throttle body, intake manifold, and cylinder head are all possible leak locations.
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Old 09-16-2018, 11:25 PM   #7
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Thanks, everyone, I got the code today and it's error code for the coolant sensor. After getting the code the truck is idling really low and rough now. Don't know what to do. Going to be replacing the coolant temperature sensor but I don't think it's going to fix my problem.

Last edited by Juster; 09-17-2018 at 01:31 AM.
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Old 09-17-2018, 12:31 AM   #8
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Quote:
Originally Posted by jp2code View Post
Best way to check for a vacuum leak is

A smoke tester! See Youtube and eBay for the paint-can variety for $50 or so. Be safe, though, using them.
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Old 09-20-2018, 01:56 AM   #9
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Check for vacuum leaks and everything good for there. Do you know a way to test the coolant sensor? The only code I'm getting is for the coolant sensor.
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Old 09-20-2018, 02:15 AM   #10
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Disconnect the sensor and check for 5 Vdc between the 2 wires with the key on. Check the resistance of the sensor. At 20 degrees C it should read 2.1k-2.9k ohms. At 50 degrees C it should read 680-1000 ohms.
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