Another idle problem.. kind of
#1
Junior Member
Thread Starter
Join Date: Jul 2007
Location: Texas
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
Another idle problem.. kind of
I have a 86 GXL.
Cone filter.. High Flow cat, and custom catback.. Apexi SAFC (not tuned)...
I have these items install and my idle surges from 1300 - 1600 constantly... When you start the car cold, it will not do the quick warmup that it did before. (Where it goes up to 3000k and slowly comes down.) Also, I checked tps, and everything I could possible find on the forums and throughout google. I was wonder could the airpump be causing this issue? If i hold the throttle steadily anywhere between idle and 3500k it surges. I still have the airpump connected, with the belt on. Also I just a filter on the end that connected to the airbox and on the end that connected to the split air pipe. Please let me know if anyone has any ideas on this issue. This weekend I plan to get new plugs wires and fuel filter, and that this fixes the issue, but I really think it maybe the airpump still being connected. Also on my narrowband o2 sensor anything under 3500k reads extremely lean. Once it goes over 3500k its over on the rich side.
Cone filter.. High Flow cat, and custom catback.. Apexi SAFC (not tuned)...
I have these items install and my idle surges from 1300 - 1600 constantly... When you start the car cold, it will not do the quick warmup that it did before. (Where it goes up to 3000k and slowly comes down.) Also, I checked tps, and everything I could possible find on the forums and throughout google. I was wonder could the airpump be causing this issue? If i hold the throttle steadily anywhere between idle and 3500k it surges. I still have the airpump connected, with the belt on. Also I just a filter on the end that connected to the airbox and on the end that connected to the split air pipe. Please let me know if anyone has any ideas on this issue. This weekend I plan to get new plugs wires and fuel filter, and that this fixes the issue, but I really think it maybe the airpump still being connected. Also on my narrowband o2 sensor anything under 3500k reads extremely lean. Once it goes over 3500k its over on the rich side.
#3
getcha brap on
iTrader: (4)
Join Date: Sep 2006
Location: North TX
Posts: 355
Likes: 0
Received 0 Likes
on
0 Posts
I had a similar issue and it ended up being a bad mass air, sometimes the trap door does not close completly and causes a vacuum leak. It will cause the ECU to go nuts trying to smooth out the idle, mine would just keep bouncing up and down, it was so annoying. Even if you would hold the gas slightly the idle would still dip down and up
#5
Junior Member
Thread Starter
Join Date: Jul 2007
Location: Texas
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
new plugs in. Same issue. Hooked up the cat again and air pump. Same issue. I have been trying to adjust the tps without jumping the initial set coupler. So that might be my problem. So Here goes.
#7
Trending Topics
#8
The Brap is Back
iTrader: (3)
The coolant line in question was attached to the BACV, an emissions related item that adjusts idle rpm when accessories are in use (mostly the AC), another related item would be the bypass air solenoid valve that is usually located just next to or beneath the BACV, it too helps control idle, and when its acting stupid it can cause a high bouncing idle. Neither of these valves are 'needed' if they fail, just block off the area's they have air/coolant running to and be done with them.
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
HalifaxFD
Canadian Forum
126
05-09-16 07:06 PM
The1Sun
1st Generation Specific (1979-1985)
7
09-18-15 07:13 PM
RotaryBobby
1st Generation Specific (1979-1985)
1
09-10-15 01:33 PM