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My issue was indeed the fuel injectors. Sea Foam solved it, so I'd recommend that as cheap option #1.
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I have a similar problem:
The engine is several thousand km after rebuild and recently something like this happened: The idle speed of the engine began to rise and fall with regularity exactly every second (it didn't seem random) by about 500 revs. Even when I added gas and kept it at about 4000 rpm. it still happened with the same accuracy. After less than minute it just stopped (not the engine ;)) and since then (+-300km) nothing like that happens. Any ideas? Should i be worried? |
I would look for vacuum leaks
Clean and reset the ess sensor maybe even bad gas if not then there are more things after to check but those are first |
Originally Posted by Tomo
(Post 4982750)
I have a similar problem:
The engine is several thousand km after rebuild and recently something like this happened: The idle speed of the engine began to rise and fall with regularity exactly every second (it didn't seem random) by about 500 revs. Even when I added gas and kept it at about 4000 rpm. it still happened with the same accuracy. After less than minute it just stopped (not the engine ;)) and since then (+-300km) nothing like that happens. Any ideas? Should i be worried?
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Originally Posted by ironj221
(Post 4731875)
My issue was indeed the fuel injectors. Sea Foam solved it, so I'd recommend that as cheap option #1.
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Check coils. wires and plugs. When I had a rough idle like that, it was time to change out the coils, wires and plugs. That fixed it for me.
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Originally Posted by gwilliams6
(Post 4711319)
Generating Power at Full Throttle
Ignition Coils Spark Plugs Spark Plug Wires Engine Compression E-Shaft Sensor (ESS) Air Filter Intake Valving Throttle Body Mass Air Flow Sensor (MAF) Fuel Pump Fuel Injectors Catalytic Converter (Cat) Keeping the Engine at a Cruise Ignition Coils Spark Plugs Spark Plug Wires Engine Compression E-Shaft Sensor (ESS) Intake Valving Throttle Body Mass Air Flow Sensor (MAF) Fuel Pump Fuel Injectors Front O2 sensor Catalytic Converter (Cat) Keeping the Engine at an Idle Ignition Coils Spark Plugs Spark Plug Wires Engine Compression E-Shaft Sensor (ESS) Mass Air Flow Sensor (MAF) Front O2 sensor Catalytic Converter (Cat) Intake Vaccum im having this issue and I hope Im lucky I think its my cat since it is smelling like gas 24/7 my exhaust has a really bad rattle to it and it also take awhile to pick up speed. |
Originally Posted by cfletcher592
(Post 4983152)
im having this issue and I hope Im lucky I think its my cat since it is smelling like gas 24/7 my exhaust has a really bad rattle to it and it also take awhile to pick up speed.
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Originally Posted by icemantbi
(Post 4983100)
Check coils. wires and plugs. When I had a rough idle like that, it was time to change out the coils, wires and plugs. That fixed it for me.
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Originally Posted by sethstephens21
(Post 4987649)
I’ve had the coils wires a plugs changed for awhile, I’m still having idling issues, fluctuating from as low as 500 up too 1500 back and forth. I checked my solenoids for good connection my connectors are fine but idk if the solenoids are good. Anyway to check that without a voltmeter? Also air pump delete was done on this car as well. Comp is good seals are good engine was rebuilt. Just having these idle issues. Wonder if it’s a pcm problem. Guy before me says he went too have it tuned but doesn’t think the guy put a “real” tune on it. Somebody please help me
Keeping the Engine at a Cruise
Keeping the Engine at an Idle
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