Does anyone know where there are on a '87 Maxima. I'm thinking one might be the cause of my hesitation and erratic idle.

tia,
Mike

 

The idle air sensor is right behind the "N" on your plenum; it has two screws you can turn to adjust the idle speed. The throttle position sensor is on the throttle body where it always is. Good luck.

-Jeremy

 

Duh!! Makes sense the TPS is right on the TB like my old SHO!!
I think since I finally looked at the motor tonight!! I solved the main problem being a plug wire completely came off the distributor - but I think new plugs and wires are in store.

thanks,
Mike

 

Check your cylinder head temperature sensor. You should measure around 2700 ohms when cold and 330 ohms hot. Those thermistors are known to open, then you will have a cold start/run problem, and excessive spark knock for a short while after a hot crank.

Jamie

 

Thanks for the info Jamie,
I think I'm gonna change the plugs and wires this wkend. Car is running a bit better but still seems to stumble a bit when on the gas. Idle is a bit rougher when the AC is on too.

Mike

 

Be Sure to do This.....

Make sure you have no air leaks between the Throttle chamber and the Air Flow Meter, check the condition of the connecting tube, they always look good from the top, may have to remove it to check the bottom. Just think what a simple crack can do for you here. Check it out!

New to this forum, have an 86SE, original owner, stock, 110K miles, needs a lot of work now, will post problems later.

Al