iselltonsofthings
New Member
I've owned this car for 4 days. It has 144,000 on the clock. The plugs wells have oil, no doubt about that. I've yet to clean the IAB and runners. The waterpump does not leak and I already replaced the front main oil seal and timing belt. There was no cause for there to be any noticable problem with the CPS. Since the waterpump was not dripping and the front main seal was not leaking.
If I'm going 65mph on the highway, and depress the clutch and put it in neutral, the engine will drop right to 1000-900 and sit there perfectly.
Now if I am going that 65mph and come up to a light, I will leave the car in 5th until I slow down to where the engine reaches about 1,100 RPM and then I will put it in neutral while I slow the rest of the way down to a complete stop.
Now as soon as I come to a complete stop, the engine will surge to about 1200-1300 and then drop instantly to 800-900 and it will start oscillating worse and worse each time. Once the engine drops down to the 800-900, it is almost like the Computer tries to rev it to recover, because the engine will instantly jump to about 1500 RPMs, hold there for a second or two and then drop down to about 500 RPMs where it will usually stall. If it doesn't stall that time, it will the next time it revs up and drops again.
This does not happen every time that I come to a stop.
It might happen naturally once out of every 6-8 times that I come to a stop.
The reason that I say "naturally" is because I can force the engine to do this any time I want. Even when the car is still in motion while slowing down.
Say I start slowing down again from 65mph. If I leave the car in 5th until the engine reaches 700 RPM's and then I depress the clutch and put it in neutral, rather than then engine recovering from the 700 RPM's by just increasing the idle to 1000, rather it will start that horrible oscillation to the point of stalling.
I don't belive that the oil in the plug wells is the main culprit. The car runs/pulls good with no misfiring on the open highway. The only time this problem happens is during idle or if I force the RPM's below "natural" idle speed.
The only thing that I can think of is that the IAB is sticking due to excessive carbon or just natually being worn out.
Let me know what you think. Thanks in advance. Sorry for the long post. That is usually how I do it when posting. I like to list as much information to make it easier determining the problem. Sincerely, Scott
If I'm going 65mph on the highway, and depress the clutch and put it in neutral, the engine will drop right to 1000-900 and sit there perfectly.
Now if I am going that 65mph and come up to a light, I will leave the car in 5th until I slow down to where the engine reaches about 1,100 RPM and then I will put it in neutral while I slow the rest of the way down to a complete stop.
Now as soon as I come to a complete stop, the engine will surge to about 1200-1300 and then drop instantly to 800-900 and it will start oscillating worse and worse each time. Once the engine drops down to the 800-900, it is almost like the Computer tries to rev it to recover, because the engine will instantly jump to about 1500 RPMs, hold there for a second or two and then drop down to about 500 RPMs where it will usually stall. If it doesn't stall that time, it will the next time it revs up and drops again.
This does not happen every time that I come to a stop.
It might happen naturally once out of every 6-8 times that I come to a stop.
The reason that I say "naturally" is because I can force the engine to do this any time I want. Even when the car is still in motion while slowing down.
Say I start slowing down again from 65mph. If I leave the car in 5th until the engine reaches 700 RPM's and then I depress the clutch and put it in neutral, rather than then engine recovering from the 700 RPM's by just increasing the idle to 1000, rather it will start that horrible oscillation to the point of stalling.
I don't belive that the oil in the plug wells is the main culprit. The car runs/pulls good with no misfiring on the open highway. The only time this problem happens is during idle or if I force the RPM's below "natural" idle speed.
The only thing that I can think of is that the IAB is sticking due to excessive carbon or just natually being worn out.
Let me know what you think. Thanks in advance. Sorry for the long post. That is usually how I do it when posting. I like to list as much information to make it easier determining the problem. Sincerely, Scott
