Firegst
10+ Year Contributor
- 94
- 1
- Aug 29, 2012
-
Queen Creek,
Arizona
Ok, So I am having a slight misfire at idle that I can hear and feel. If I drive the car more than say 30 miles the CEL will come on and in Link it says its a cylinder 3 misfire...I can also feel this mis if I am at say 2500rpm in second going down my street the car kinda wants to buck.
So I replaced the plugs(brp7es NGK) and wires(Bosch) and gaped the plugs to .30'
Tested the coils and got 1.1 ohms at the primary and 14.7-14.9 at the secondary...on both coil packs.
New Front 02 no boost or vaccum leaks either.
(I TESTED THE COILS BEFORE AND I DID GET SIMILAR NUMBERS TO THE ABOVE, BUT I USED AUTOZONE'S WEBSITE FOR THE SPECS AND THESE WERE OK, AFTER LOOKING ON ALL-DATA FOR FACTORY SPECS THIS SEEMS NOT TO BE THE CASE- OEM IS .70-.86 AT THE PRIMARY AND 11.3-15.3)
My question is could this high ohm reading be causing my mis at idle? I would think that if it were a coil pack issue that I would be getting the mis-fire on cylinders 3 and 2 being that they are coming from the same coil. Also could the out of spec primary cause this issue? If so why only on one cylinder? I have move the plugs around, and the wires, the miss doesn't follow.
Has anyone else had this issues with high ohm readings for the primary? Hoe could the mis-fire be on just the third cylinder if it were a coil pack related issue? I am stumped, thanks in advanced for any help.
So I replaced the plugs(brp7es NGK) and wires(Bosch) and gaped the plugs to .30'
Tested the coils and got 1.1 ohms at the primary and 14.7-14.9 at the secondary...on both coil packs.
New Front 02 no boost or vaccum leaks either.
(I TESTED THE COILS BEFORE AND I DID GET SIMILAR NUMBERS TO THE ABOVE, BUT I USED AUTOZONE'S WEBSITE FOR THE SPECS AND THESE WERE OK, AFTER LOOKING ON ALL-DATA FOR FACTORY SPECS THIS SEEMS NOT TO BE THE CASE- OEM IS .70-.86 AT THE PRIMARY AND 11.3-15.3)
My question is could this high ohm reading be causing my mis at idle? I would think that if it were a coil pack issue that I would be getting the mis-fire on cylinders 3 and 2 being that they are coming from the same coil. Also could the out of spec primary cause this issue? If so why only on one cylinder? I have move the plugs around, and the wires, the miss doesn't follow.
Has anyone else had this issues with high ohm readings for the primary? Hoe could the mis-fire be on just the third cylinder if it were a coil pack related issue? I am stumped, thanks in advanced for any help.