1990 delta 88 123427 millage

[quote:a468a98d88="bigt5104"]car starts and idols for hours no problem when driving it seems sluggish and surges check engine is giving a code 42 and 43 replaced ecm and ignition coil last year need some help to check next[/quote:a468a98d88]

I would turn to the knock sensor side of the equation. Does your engine knock when you accelerate? If so, fix the ause of the knock. If not, suspect a faulty KS or circuit.

[quote:6382140276="Mikeybdman"][quote:6382140276="bigt5104"]car starts and idols for hours no problem when driving it seems sluggish and surges check engine is giving a code 42 and 43 replaced ecm and ignition coil last year need some help to check next[/quote:6382140276]

I would turn to the knock sensor side of the equation. Does your engine knock when you accelerate? If so, fix the ause of the knock. If not, suspect a faulty KS or circuit.[/quote:6382140276]
theres no knock at all engine sounds great just runs sluggish and surges thanks i'll give that a look[/quote]

that worked thanks[quote:660ecf9d97="bigt5104"][quote:660ecf9d97="Mikeybdman"]
[quote:660ecf9d97="bigt5104"]car starts and idols for hours no problem when driving it seems sluggish and surges check engine is giving a code 42 and 43 replaced ecm and ignition coil last year need some help to check next[/quote:660ecf9d97]

I would turn to the knock sensor side of the equation. Does your engine knock when you accelerate? If so, fix the ause of the knock. If not, suspect a faulty KS or circuit.[/quote:660ecf9d97]
theres no knock at all engine sounds great just runs sluggish and surges thanks i'll give that a look[/quote:660ecf9d97][/quote]