Question about 1992 Nissan Sentra 4 Door

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IDLING HIGH AND HAS A FLAT SPOT WHEN TAKING OFF

I have a 91 Sentra 140GX, the car has a flat spot as when i take off it stalls then picks up speed but i have to play with accelerator to take off. Also the idle is over 10000rpm and we canot get that right even the carburettor peoples tried but say it cannot get a CO reading. Please assist

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  • Nissan Master
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Have you cleaned connector & tested your TP sensor? (Throttle position sensor)

Posted on Aug 30, 2008

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My 02 sentra will not go into drive


Hello 02 Sentra....Have you checked the transmission fluid level?

Is your dash board displaying any SES (Service Engine Soon) indicators?

Your vehicles on board systems can be accessed by a
OBD II reader...I do believe AutoZone performs this as a free customer service.

PS: MAP - Manifold Absolute Pressure - The MAP sensor converts engine vacuum/manifold pressure to an electrical signal so the computer knows how much load the engine is under. This data is the basis for fuel delivery and timing control. The MAP sensor is typically located in the air cleaner, fender wall, firewall, intake manifold or under the dash.

What are the symptoms of a faulty map sensor?
Vehicles with a bad manifold absolute pressure (MAP) sensor typically run rough while accelerating, decelerating or idling. Other common symptoms include increased fuel consumption and sudden jerks or hesitation while accelerating. Drivers may detect a strong smell of gas after the engine has warmed up.

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My 1991 Dodge Dakota has a flat dead spot when you take of from red lights. Where do I start?


The most likely cause would be the throttle position sensor on the throttle body, it is cheap and easy to replace.

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It stalls all the time and runs rough and has a flat spot when taking off


Sounds like you have a dirty mass air flow sensor...it is located in the middle of the mass air flow tube...Pull the air filter off and try squirting some cleaner made for it..if that doesn't work change it out..not a difficult job normaly one electrical connections and four bolts..good luck.

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My Lexus ls 400 1994 stall upon acceleration but picks up speed shortly afterwards what my possible solutio


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My 98 Saturn 1.9 litre has a flat spot in it's acceleration. Taking off you have to pay the gas to keep it from stalling. Other than that runs great


check the TPS sensor with a volt meter to check for drop outs as you manually move the throttle. this is like a rheostat dimmer like you might have in a house to dim the lights. the ribbon wears out and can cause a flat spot.

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weak fueling. is my guess.
makes no difference>? that mean the same?
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weak fueling, change out the filters? yet?

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