idle surge when cold
#1
Newbie
Thread Starter
Join Date: Feb 2004
Location: Scotland, UK
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
idle surge when cold
i need help!!. My 1988 13b has a problem, maybe 2 or 3 problems. when starting up from cold, it initially starts well, then after about 10 seconds the revs drop from about 2000 to under 1000, then surges up and down to 2000 and back but never stalls. Also when it is warmed up, the surging idle goes away, but trying to drive it smoothly in traffic is a nightmare..it jerks and surges on very light throttle positions. even when slowing down and no throttle, it jerks about. i susspect a vaccume leak, but from where?
#2
Nothing to see here.
If you still have the thermowax unit attached and assuming all else is stock, it should rev to 3k rpm for 17 seconds then drop to ~1,500 rpm unti the thermowax is melted by the heating coolant. Once the engine is at operating temp., the idle should drop to ~750rpm. The surging indicates that the TPS may need to be adjusted.
B
B
Last edited by rxse7en; 02-15-04 at 04:56 PM.
Thread
Thread Starter
Forum
Replies
Last Post
Adaptronic 1280s Hot Start 3 Rotor 20b RX7
Monsterbox
Adaptronic Engine Mgmt - AUS
5
09-11-15 03:29 PM
RotaryBobby
1st Generation Specific (1979-1985)
1
09-10-15 01:33 PM
The1Sun
1st Generation Specific (1979-1985)
0
09-07-15 10:21 PM