Car ran perfect until 165k no issues no lights at all!
At that point it developed a rough idle which progressed into almost not running at idle without throttle and laggy accel.
During the next 5 month of daily driving and swapping parts the following are changed.
Cam sensors all no change
Oil pressure solenoids all no change
Finally agreed with the mechanic it must be the timing chain!
Ordered from Amazon for ease what a mistake!
Cloytes chains on Amazon's official store are actually knockoff as a cloytes rep expressed to the amazon employee that they do not have an account and that they need to take the store down!
So get the car back before knowing that. It runs great and I took it very easy. I only drove the car 2 weeks on the new chain before it broke at 55mph on the way home.
Mechanic gets it back and I ask for him to replace the chain and check for compression and he informs me it's locked up.
We purchase a new used engine it arrives and gets dropped in along with new engine mounts and water pump and brakes.
Mechanic drops it back off at this point it has a high idle 1100ish but he says sometime the relearn takes time on the throttle body which I've seen before so I drive it home 13 miles and at the 10 mile mark it starts missing and reduced power.
I pull over pop the hood and notice the passenger cat it orange literally glowing orange.
I let the car cool off and get it home.
He says maybe bad coil or sparkplug so I change both which smooths the idle and drive it directly back to his shop the next day.
He proceeds to replace all plugs, coils and replaces injector for cylinder 5 eith an oem one from gm.
cylinder 5 is the only check engine light code present.
No change he gives up and sends it to another shop after 3 months of trying to fix it.
Next Mechanic changes coil, spark plug, uses injector cleaner, and new battery which was new before timing chain and informed me that he is sure it is the intake manifold has a break somewhere.
So I order a new one does not change anything.
I've been told it was smoke tested twice and that the o2 sensors are heating up and are reading normal but I do not have numbers to prove that.
2nd Mechanic also said that besides the hundreds of miss fires on cylinder 5 the ecu is trimming the fuel by 20 percent.
He also said he did a compression test and all cylinders were to spec.
Also no visual marks on the cams he said they looked brand new.
Seems like the miss is less noticeable at higher rpms but still there.
I also fear the orange cat might have been clogged or even worse the used motor might need a timing chain but it doesn't feel at all like the last old motor did when it needed it.
Plans moving forward are check the valves on cylinder 5 for build up and pull the cat to check and clean it.
Any advice would be welcomed!
At that point it developed a rough idle which progressed into almost not running at idle without throttle and laggy accel.
During the next 5 month of daily driving and swapping parts the following are changed.
Cam sensors all no change
Oil pressure solenoids all no change
Finally agreed with the mechanic it must be the timing chain!
Ordered from Amazon for ease what a mistake!
Cloytes chains on Amazon's official store are actually knockoff as a cloytes rep expressed to the amazon employee that they do not have an account and that they need to take the store down!
So get the car back before knowing that. It runs great and I took it very easy. I only drove the car 2 weeks on the new chain before it broke at 55mph on the way home.
Mechanic gets it back and I ask for him to replace the chain and check for compression and he informs me it's locked up.
We purchase a new used engine it arrives and gets dropped in along with new engine mounts and water pump and brakes.
Mechanic drops it back off at this point it has a high idle 1100ish but he says sometime the relearn takes time on the throttle body which I've seen before so I drive it home 13 miles and at the 10 mile mark it starts missing and reduced power.
I pull over pop the hood and notice the passenger cat it orange literally glowing orange.
I let the car cool off and get it home.
He says maybe bad coil or sparkplug so I change both which smooths the idle and drive it directly back to his shop the next day.
He proceeds to replace all plugs, coils and replaces injector for cylinder 5 eith an oem one from gm.
cylinder 5 is the only check engine light code present.
No change he gives up and sends it to another shop after 3 months of trying to fix it.
Next Mechanic changes coil, spark plug, uses injector cleaner, and new battery which was new before timing chain and informed me that he is sure it is the intake manifold has a break somewhere.
So I order a new one does not change anything.
I've been told it was smoke tested twice and that the o2 sensors are heating up and are reading normal but I do not have numbers to prove that.
2nd Mechanic also said that besides the hundreds of miss fires on cylinder 5 the ecu is trimming the fuel by 20 percent.
He also said he did a compression test and all cylinders were to spec.
Also no visual marks on the cams he said they looked brand new.
Seems like the miss is less noticeable at higher rpms but still there.
I also fear the orange cat might have been clogged or even worse the used motor might need a timing chain but it doesn't feel at all like the last old motor did when it needed it.
Plans moving forward are check the valves on cylinder 5 for build up and pull the cat to check and clean it.
Any advice would be welcomed!
