Nissan Altima GXE

Asked by Dec 23, 2010 at 05:48 PM about the 2001 Nissan Altima GXE

Question type: Maintenance & Repair

starts hard after fuel up-rpm stays at 1500 after release of accelerator for 3 to 4
seconds then drops to reg. idle. Code reads 1 knock sensor or 1 bank. Where is
knock sensor-could this sensor affect hard starting or high idle?

2 Answers

195

The knock sensor will not usually affect idle and such. It detects things like preignition and so on to help computer decide how much fuel to add or remove depending on driving conditions and can also be used to detect misfires (multiple) usually not spark oriented. If you clear the code, does the problem still exist? what year is the car, and what type of throttle body does it have. your problem sounds like a IAC motor that sticks or is out of range. The idle air control motor steps back and forth depending on throttle plate position to allow the car to keep running when the throttle is not open, preventing a stall. this would give you both of the problems u have, and would not necessarily set a code. hope this helps.

2 out of 2 people think this is helpful.

Thank you Russell for your response.The car is a 2001 and has 1 throttle plate,not sure what type throttle body is. Problem still exists after clearing code. Marlin

Your Answer

Add photo

Related Questions

Search Nissan Altima Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Nissan Altima Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,900
#2 FordNut
FordNut
Reputation 1,200
#3 Cassie Sapphire
Cassie Sapphire
Reputation 590
View All

Related Models For Sale

Used Nissan Maxima
400 Great Deals out of 24,586 listings starting at $999
Used Honda Accord
981 Great Deals out of 75,076 listings starting at $899
Used Toyota Camry
1,208 Great Deals out of 96,014 listings starting at $1,250
Used Honda Civic
859 Great Deals out of 70,031 listings starting at $1,200
Used Nissan Sentra
621 Great Deals out of 52,476 listings starting at $2,000
Used Hyundai Sonata
699 Great Deals out of 49,188 listings starting at $700
Used Toyota Corolla
975 Great Deals out of 67,452 listings starting at $1,595
Used Chevrolet Malibu
1,185 Great Deals out of 82,906 listings starting at $1,800
Used Kia Optima
548 Great Deals out of 30,982 listings starting at $1,250
Used Chevrolet Impala
933 Great Deals out of 35,377 listings starting at $1,700

Used Cars For Sale

2017 Nissan Altima For Sale
36,128 listings starting at $11,390
2016 Nissan Altima For Sale
78 Great Deals out of 12,015 listings starting at $10,995
2015 Nissan Altima For Sale
346 Great Deals out of 10,275 listings starting at $6,995
2014 Nissan Altima For Sale
220 Great Deals out of 6,236 listings starting at $6,995
2013 Nissan Altima For Sale
165 Great Deals out of 5,157 listings starting at $3,900