1987 Nissan Sentra Exhaust?

DAWN MELTON

MEMBER
1987 NISSAN SENTRA

Engine Performance problem
1987 Nissan Sentra 4 cyl Two Wheel Drive 190000 miles

Help! My 87 nissan sentra will start and run great for about 10min. It will die and start only after it has cooled. I have changed fuel filter, fuel pump, distributor, new wires, changed coil and changed it back. I took exhaust away from manifold, still died. Hoping this eliminated the possibility of it being the catalytic converter? When I was returning the coil I bought, that was not the problem. This parts guy told me to check my fuel, evidently I could have a sensor shutting down, giving to much or to little fuel. Where is this sensor? Do I have to adjust the carb. Why would it run great and then shut down? Really greasy female still in need of help!

4 Replies

BLACKOP555

MECHANIC
10,371 POSTS

Ahh another female getting in to mechanics, gotta love it :D

first step would be to hook up a vaccum guage if possible to check for a plugged/restricted exhaust.

Or you can keep the rpms at 2000 for a few mins and if you have to give it more gas to maintain the rpms the system is restricted.

You could take it off but it will be loud and mess with the o2 sensors.

Sounds like you shoul be checking the plugs and wires, and igntion module first.
If those arnt it it may be the o2 sensors causing this or the fuel pump because when it goes in open loop mode which could be near 10 mins the o2 sensors are calling for too much or too little fuel causing it to stall out.

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Thursday, June 19th, 2008 AT 12:42 PM

DAWN MELTON

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[quote="Dawn Melton"]Engine Performance problem
1987 Nissan Sentra 4 cyl Two Wheel Drive 190000 miles

Help! My 87 nissan sentra will start and run great for about 10min. It will die and start only after it has cooled. I have changed fuel filter, fuel pump, distributor, new wires, changed coil and changed it back. I took exhaust away from manifold, still died. Hoping this eliminated the possibility of it being the catalytic converter? When I was returning the coil I bought, that was not the problem. This parts guy told me to check my fuel, evidently I could have a sensor shutting down, giving to much or to little fuel. Where is this sensor? Do I have to adjust the carb. Why would it run great and then shut down? Really greasy female still in need of help! O2 sensor huh? Where is this located? Will it be the sensor or the pump or both?

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Friday, June 20th, 2008 AT 7:08 PM

BLACKOP555