MaydayDown_Joey
Member
- :
- 2002 Protege 5
Alright, the title isn't the full details.
So I've had this problem ever since I bought this car about 3 years ago. If I start from a stop it's fine, when moving at a decent speed at higher rpm it's fine. However in traffic if the RPMs drop too far and I do not have any throttle input then press the pedal there is this slight bog in response and then the engine will start to actually increase throttle. sometimes it'll kinda lunge back and forth if I'm still trying to drive slow and I have to push the clutch in. However if I'm in say 4th gear and I let the car slow down enough and let the RPMs drop and push the throttle in it appears to be fine. The car does not misfire at all that I can feel or hear.
Now, it's very hard to tell if it's mechanical or electronic. However at this point I'm beginning to think it's ignition related:
- At a stop sometimes the idle will drop below 500rpm or low enough that you can hear it begin to compensate and the engine shake a little. It doesn't happen a lot but just sometimes it raises an eyebrow
- At idle it doesn't hunt a lot and the RPMs are stable enough to pass smog is no issues (not that means much in this case
- If I'm driving slow and purposely let the rpms/speed drop in first or second gear and pin the throttle there might be a slight shake from the engine and then bog (which a little is to be expected)
I did plugs and wires when I got the car as well as the fuel filter. However I do not think I did any sort of resistance tests on the coil packs.
Mechanically:
- replaced lower a-arms
- new front and rear motor mounts
- new shocks
- new sway bar end links
The car runs fine other than this.
Educated thoughts and wisdom?
Thanks!
So I've had this problem ever since I bought this car about 3 years ago. If I start from a stop it's fine, when moving at a decent speed at higher rpm it's fine. However in traffic if the RPMs drop too far and I do not have any throttle input then press the pedal there is this slight bog in response and then the engine will start to actually increase throttle. sometimes it'll kinda lunge back and forth if I'm still trying to drive slow and I have to push the clutch in. However if I'm in say 4th gear and I let the car slow down enough and let the RPMs drop and push the throttle in it appears to be fine. The car does not misfire at all that I can feel or hear.
Now, it's very hard to tell if it's mechanical or electronic. However at this point I'm beginning to think it's ignition related:
- At a stop sometimes the idle will drop below 500rpm or low enough that you can hear it begin to compensate and the engine shake a little. It doesn't happen a lot but just sometimes it raises an eyebrow
- At idle it doesn't hunt a lot and the RPMs are stable enough to pass smog is no issues (not that means much in this case
- If I'm driving slow and purposely let the rpms/speed drop in first or second gear and pin the throttle there might be a slight shake from the engine and then bog (which a little is to be expected)
I did plugs and wires when I got the car as well as the fuel filter. However I do not think I did any sort of resistance tests on the coil packs.
Mechanically:
- replaced lower a-arms
- new front and rear motor mounts
- new shocks
- new sway bar end links
The car runs fine other than this.
Educated thoughts and wisdom?
Thanks!