MarkgM
10-13-2003, 11:37 PM
I have an '87 Accord LX - carbed, auto trans.
Got it tuned up (as may be seen in another thread farther below) - all old issues are gone.
After the tune-up, the idle (in drive, breaked, not moving) was rough enough to say the car had a shimmy. I called and asked about it, and it was suggested to try some gas cleaner, so I did, and 100 miles later, I have to say the idle is as smooth as it has ever been.
Seems like the carb must have a passageway that got cleaned out good. Another change that has taken place with this smooth idle is that it is higher, but I don't think it was losing RPMs earlier from the shimmy, I think it actually has idled up from ~800 to ~1000. So that's one thing.
The funny behavior is that when decelerating to a stop or real slow speed, the idle sometimes drops all the way to nearly nothing, it comes very close to stalling. And moreso when its not fully warmed up, just sitting at a stop sign the idle can give away like it's stalling, and then just before it does, kick back in again and rev itself up over 1000, and then lose it again, and then catch itself and rev back up again.
It's not a 100% thing, but it seems regular enough especially before the engine is fully warmed up. Any idea what I should do or be looking at to diagnose for this? I know the hot-air door diaphragm isn't working, but I skipped the $15 for it at the time, because I didn't think it was important. (I'm not in cold weather country.)
Thanks in advance.
- Mark
Got it tuned up (as may be seen in another thread farther below) - all old issues are gone.
After the tune-up, the idle (in drive, breaked, not moving) was rough enough to say the car had a shimmy. I called and asked about it, and it was suggested to try some gas cleaner, so I did, and 100 miles later, I have to say the idle is as smooth as it has ever been.
Seems like the carb must have a passageway that got cleaned out good. Another change that has taken place with this smooth idle is that it is higher, but I don't think it was losing RPMs earlier from the shimmy, I think it actually has idled up from ~800 to ~1000. So that's one thing.
The funny behavior is that when decelerating to a stop or real slow speed, the idle sometimes drops all the way to nearly nothing, it comes very close to stalling. And moreso when its not fully warmed up, just sitting at a stop sign the idle can give away like it's stalling, and then just before it does, kick back in again and rev itself up over 1000, and then lose it again, and then catch itself and rev back up again.
It's not a 100% thing, but it seems regular enough especially before the engine is fully warmed up. Any idea what I should do or be looking at to diagnose for this? I know the hot-air door diaphragm isn't working, but I skipped the $15 for it at the time, because I didn't think it was important. (I'm not in cold weather country.)
Thanks in advance.
- Mark