2001 GS300 Misfire Help
#1
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Hey everyone,
I just purchased a 2001 GS300 with 140K miles and it has a misfire. I was told by the previous owner that it needed a new ignition coil, but I still need to get the code read to be sure. Can anyone direct me to a write up or video on how to replace those? (Even if it's not the problem I'd still like to know how) I've found videos on how to change the spark plugs and wires, but nothing on the coil packs. Any help would be greatly appreciated. Thanks in advance.
I just purchased a 2001 GS300 with 140K miles and it has a misfire. I was told by the previous owner that it needed a new ignition coil, but I still need to get the code read to be sure. Can anyone direct me to a write up or video on how to replace those? (Even if it's not the problem I'd still like to know how) I've found videos on how to change the spark plugs and wires, but nothing on the coil packs. Any help would be greatly appreciated. Thanks in advance.
#2
Driver School Candidate
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Hey everyone,
I just purchased a 2001 GS300 with 140K miles and it has a misfire. I was told by the previous owner that it needed a new ignition coil, but I still need to get the code read to be sure. Can anyone direct me to a write up or video on how to replace those? (Even if it's not the problem I'd still like to know how) I've found videos on how to change the spark plugs and wires, but nothing on the coil packs. Any help would be greatly appreciated. Thanks in advance.
I just purchased a 2001 GS300 with 140K miles and it has a misfire. I was told by the previous owner that it needed a new ignition coil, but I still need to get the code read to be sure. Can anyone direct me to a write up or video on how to replace those? (Even if it's not the problem I'd still like to know how) I've found videos on how to change the spark plugs and wires, but nothing on the coil packs. Any help would be greatly appreciated. Thanks in advance.
The following 2 users liked this post by Yabito:
QLex300 (02-03-22),
rabidwhale (02-20-18)
#3
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Thanks man, I'm going to hopefully be able to go through it this weekend, I have another car to get together to sell. I plan on doing a full tune up, so I'm hoping it's just the spark plugs. I already bought 1 coil pack, just in case one is bad like the previous owner said.
#4
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Follow the same videos for changing the plugs. You have to remove the coil packs before the plugs. Also beware the connectors on the coil packs get brittle over time and could quite possibly be the issue with the misfire. Very rarely it is the ECU. Get the car scanned asap....it will help with proper diagnosis.
The following 2 users liked this post by Letsride:
QLex300 (02-03-22),
rabidwhale (02-20-18)
#5
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It easy to replace most of the coils, just remove one bolt, pull off the coil, disconnect the electrical harness (be careful these can break, just press it in and pull back and fourth gently, it will come off). The ODB II code will tell you what cylinder is bad. One way to test this is to switch coils and see if the code moves with the bad coil to another cylinder. If you need to change the coils under the air intake it is a little harder, just need to remove all that unit (connection to filter box, 2-3 hoses, connection to throttle intake in to the engine...) I have replaced all my coils and the car ran like a top, my wife overheated our 2001 GS430 and it burned 3-4 coils up, so I replaced them all in case others were damaged. Sparkplugs are a potential issue too. After you take off the ODB II referenced misfire cylinder's coil, remove the spark plug and inspect it just to make sure its not the plug.
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rabidwhale (02-20-18)
#6
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It easy to replace most of the coils, just remove one bolt, pull off the coil, disconnect the electrical harness (be careful these can break, just press it in and pull back and fourth gently, it will come off). The ODB II code will tell you what cylinder is bad. One way to test this is to switch coils and see if the code moves with the bad coil to another cylinder. If you need to change the coils under the air intake it is a little harder, just need to remove all that unit (connection to filter box, 2-3 hoses, connection to throttle intake in to the engine...) I have replaced all my coils and the car ran like a top, my wife overheated our 2001 GS430 and it burned 3-4 coils up, so I replaced them all in case others were damaged. Sparkplugs are a potential issue too. After you take off the ODB II referenced misfire cylinder's coil, remove the spark plug and inspect it just to make sure its not the plug.
#7
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Hello.....I was driving in very cold snowy weather and my car VSC Off llight came on and car was rough idle. I pulled into Advance auto and pulled codes PO1351, PO1354, PO300, PO302, PO304, and PO308. If I am correct, this is most probably the VVT Bank 2 Sensor. Am I on the right track? Since PO1351 came up but without 301, 303, 305, or 307, should I still replace the VVT1?
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#8
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Hey everyone,
I just purchased a 2001 GS300 with 140K miles and it has a misfire. I was told by the previous owner that it needed a new ignition coil, but I still need to get the code read to be sure. Can anyone direct me to a write up or video on how to replace those? (Even if it's not the problem I'd still like to know how) I've found videos on how to change the spark plugs and wires, but nothing on the coil packs. Any help would be greatly appreciated. Thanks in advance.
I just purchased a 2001 GS300 with 140K miles and it has a misfire. I was told by the previous owner that it needed a new ignition coil, but I still need to get the code read to be sure. Can anyone direct me to a write up or video on how to replace those? (Even if it's not the problem I'd still like to know how) I've found videos on how to change the spark plugs and wires, but nothing on the coil packs. Any help would be greatly appreciated. Thanks in advance.
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