Gorgon
Well-known member
My engine has developed an odd miss at idle. This has been going on for some time and I thought an application of Sea Foam had help out but it's not totally gone.
At idle the car has a random miss. When launching the car the engine stumbles when the RPM drops under 1000RPM. It almost seems like the clutch slips a but that's not the case. Once the car is launched and the RPMs are up the car is fine but this is getting worse.
What's been done:
Plugs and wires (AC Delco iridium tips)
Sea Foam application as well as a GM top engine clean
New air filter (K&N)
New fuel filter
There are no codes thrown and I'm looking for other options. I would think that the MAF or O2 sensors would throw codes. It seems like it might be a sensory since it normally happens in closed loop mode and not open loop mode. Any suggestions?
Leon
At idle the car has a random miss. When launching the car the engine stumbles when the RPM drops under 1000RPM. It almost seems like the clutch slips a but that's not the case. Once the car is launched and the RPMs are up the car is fine but this is getting worse.
What's been done:
Plugs and wires (AC Delco iridium tips)
Sea Foam application as well as a GM top engine clean
New air filter (K&N)
New fuel filter
There are no codes thrown and I'm looking for other options. I would think that the MAF or O2 sensors would throw codes. It seems like it might be a sensory since it normally happens in closed loop mode and not open loop mode. Any suggestions?
Leon