"bouncing" idle problem

yamzz · 05-03-2009, 11:42 PM

So I have an 87 N/A FC. Two days ago i finished installing a new clutch. and of course in the excitement, i decided to take it out to get gas and some much needed air for the tires.
a little over 15 minutes of driving the engine had warmed up, and started acting up. The first sign of trouble hit when i came to a stop sign. the car started dropping below regular idle, then would recover by over shooting regular idle.
by the time i left the gas station it got worse. as i would come brake for the light and put it into neutral, the car's idle would drop, bounce back up, drop then die.
the idle problem has happened before i swapped clutches, but it's never died.
can someone help me out here?

My5ABaby · 05-04-2009, 08:02 AM

Have you checked for vacuum leaks?

Also, unplug the BAC and see what happens.

Rx-7fetish · 05-04-2009, 09:35 AM

So just to check here, the tps only acts up like that before the car is warmed up usually right?

FerociousP · 05-04-2009, 11:42 AM

Quote:

Originally Posted by Rx-7fetish

So just to check here, the tps only acts up like that before the car is warmed up usually right?

set the tps when the car is warm. go for drive, come back and immediately set the tps. repeat if necessary.

05-03-2009, 11:42 PM	#1
yamzz The Newbie Join Date: Apr 2009 Posts: 4 Rep Power: 0	"bouncing" idle problem So I have an 87 N/A FC. Two days ago i finished installing a new clutch. and of course in the excitement, i decided to take it out to get gas and some much needed air for the tires. a little over 15 minutes of driving the engine had warmed up, and started acting up. The first sign of trouble hit when i came to a stop sign. the car started dropping below regular idle, then would recover by over shooting regular idle. by the time i left the gas station it got worse. as i would come brake for the light and put it into neutral, the car's idle would drop, bounce back up, drop then die. the idle problem has happened before i swapped clutches, but it's never died. can someone help me out here? Last edited by yamzz; 05-03-2009 at 11:49 PM.

05-04-2009, 08:02 AM	#2
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 2,377 Rep Power: 20	Have you checked for vacuum leaks? Also, unplug the BAC and see what happens. __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

05-04-2009, 09:35 AM	#3
Rx-7fetish Blue Blur Join Date: Jan 2009 Location: Windsor Posts: 211 Rep Power: 0	So just to check here, the tps only acts up like that before the car is warmed up usually right?