I've been beating on the car lately to do run really fast during lunch at work, but i wanna know if anyone knows what would cause my car to want to shut off on stop lights and basically anytime i stop, sometimes i have to throw the car on neutral and hit the gas so it doesnt shut off, can anyone help me, BTW the car is a 96 civic with a D16y7 100% stock auto Trans

 

Is it just idleing low?

 

Sounds like too low of an idle. Are you getting any CEL's?

 

Could be a number of things honestly. Any other symptoms, any CELs?

 

got a cel... and its p0141, heater core, which is from second O2 sensor, so i atleast know it has nothing to do with the air and gas mix, and my idle feels low, but if the car actually does turn off, i turn it right back on and idles good, then i run it, and when i stop it shakes

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Brugalontherocks &raquo;</TD></TR><TR><TD CLASS="quote">got a cel... and its p0141, heater core, which is from second O2 sensor, so i atleast know it has nothing to do with the air and gas mix, and my idle feels low, but if the car actually does turn off, i turn it right back on and idles good, then i run it, and when i stop it shakes</TD></TR></TABLE>

Wait, did you mean to say you think the second O2 sensor has nothing to do with the air\fuel mix?

 

well.... the way u just asked that makes me think i might be wrong... lol, i thought it was only for emissions purpose

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Brugalontherocks &raquo;</TD></TR><TR><TD CLASS="quote">well.... the way u just asked that makes me think i might be wrong... lol, i thought it was only for emissions purpose</TD></TR></TABLE>

It has to do with the Air\Fuel mix, lol. OBD2 motors use 2 sensors, and when one goes bad, espeicially the second one, stuff starts acting up. Replace it, get your idle raised, and you should be set.

 

i hope so, cause these little sensors aint cheap either, and i know that cat is filthy, i got 235k miles on the "little engine the could"

 

Any Other Ideas???? cause the cel is a good theory, but that car has had a cel for a long time also, just wanna know before i change an expensive *** sensor

 

mine does the same thing on my '96 cx hatch auto. every now and then at a light it feels like I just ran outta gas and cuts off. start it right back up. no CEL for me.

 

well first of all the fron O2 sensor (precat) is used to A/F ratio control. the 2nd O2 sensor (aftcat) its used for monitoring the efficiency of the catilitic converter... when testing it when the engine is warm there should be very little to no fluctuation in the volt reading and should read about .1 volts if i am not mistaken... the 2nd o2 sensor really has nothing to do with the AF as much as it does the catalyst efficiency ... it sounds to me like a low idle or a vacuum leak.... check your MAP sensor.. you pulled a actual code and not a flash code so im assuming you have a scanner.. if so monitor the MAP at idle and then what it jumps to at WOT. make sure to have good vacuum and while your at it check your idle RPM at idle... it should be around 750rpm... or just try turning up the idle screw and see if the "shaking" stops.. just my .02 tho

 

WOT is Wide open trottle right? well i might have a problem with the vacuum... i did a WOT while cleaning the intake mani mouth, and i got a jumping idle, then i left it alone for a few days, and it went back to normal, so aint doing that again, and about the vacuum leak, how can i test that? i dont have a tester, i went to Advanced auto parts, they did it for free

 

and i got a dx, i dont have and rpm clock

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Brugalontherocks &raquo;</TD></TR><TR><TD CLASS="quote">WOT is Wide open trottle right? well i might have a problem with the vacuum... i did a WOT while cleaning the intake mani mouth, and i got a jumping idle, then i left it alone for a few days, and it went back to normal, so aint doing that again, and about the vacuum leak, how can i test that? i dont have a tester, i went to Advanced auto parts, they did it for free</TD></TR></TABLE>

Your IAC just needs to be cleaned out, it builds up crud and dust on it after awhile, and it will randomly cause the idle to act up, as if it were unplugged, from time to time unless it is cleaned out.