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I just bought a 99 corolla this week. 111,000 miles. at the time, i only test drive locally and it was very smooth, however, when I took the car home driving on the freeway, the engine sounded as though it was knocking. It sounds exactly like a washing machine doing it's wring clothes cycle when car goes 55 or above. it gets pretty loud.
well, last night, i changed the transmission and engine oil and filter. In addition to the engine oil, I half a bottle of Marvel Mystery oil to the engine. i drove the car to work and it ran fine, however, still with the above sound.
This morning, as I was approaching the freeway at 40+ mph, I could hear the same engine sound. however, the car started to shake a bit at 40 mhp and lack of power.
I'm not sure if this was due to the Marvel Mystery Oil used to clean the engine. Then my engine light started to blink... I managed to get the car home. Car runs rough at idle constantly in Park..etc.
Error codes: Random misfire, Misfire of cylinder 2 and cylinder 3.
P0302, P0303, P0300.
I've searched the codes and came across this link:
http://www.toyotanation.com/forum/showthread.php?t=292311
1) I have yet to pull the plugs so I don't know what's the condition. I believe the person who sold it to me said he replaced the plugs in 1997 (don't quote me), but he never replaced the spark plug wireset.
If the miss-fire is caused by the Marvel Mystery Oil, potentially these contaminant could go to the cat and ruin it! So, was it a bad idea to add Marvel Mystery oil? I'm thinking I should have just left it alone and did a few frequent 2000 miles oil and filter change instead.
I'll keep reading more misfire pages.
BTW, there was no error code when before I bought the car.
Thank you,
Gordon
well, last night, i changed the transmission and engine oil and filter. In addition to the engine oil, I half a bottle of Marvel Mystery oil to the engine. i drove the car to work and it ran fine, however, still with the above sound.
This morning, as I was approaching the freeway at 40+ mph, I could hear the same engine sound. however, the car started to shake a bit at 40 mhp and lack of power.
I'm not sure if this was due to the Marvel Mystery Oil used to clean the engine. Then my engine light started to blink... I managed to get the car home. Car runs rough at idle constantly in Park..etc.
Error codes: Random misfire, Misfire of cylinder 2 and cylinder 3.
P0302, P0303, P0300.
I've searched the codes and came across this link:
http://www.toyotanation.com/forum/showthread.php?t=292311
1) I have yet to pull the plugs so I don't know what's the condition. I believe the person who sold it to me said he replaced the plugs in 1997 (don't quote me), but he never replaced the spark plug wireset.
If the miss-fire is caused by the Marvel Mystery Oil, potentially these contaminant could go to the cat and ruin it! So, was it a bad idea to add Marvel Mystery oil? I'm thinking I should have just left it alone and did a few frequent 2000 miles oil and filter change instead.
I'll keep reading more misfire pages.
BTW, there was no error code when before I bought the car.
Thank you,
Gordon