92 SC400 Loss of Power, Rough Idle, Not ECU, Any help please
02-19-14, 05:49 PM
#31
Thanks for the link, I read it and see he had an issue like mine. Unfortunately I think is things are getting a little out of my comfort zone and I may just have to throw the towel in. I believe I'm going to have to go ahead and take it to a mechanic on Monday.
It's hard to find videos on the different things that could be wrong with my car. I felt really lucky that I was able to find the ecu replacement videos, then the help you've given me on how to test the ignition coils. The rest of the possible problems seem hard to find good videos or pictures on. I am very, very new to this and just really hoped I would be able to fix this on my own.
Today's my dad's birthday, he passed away five months ago due to cancer. He took pride in his cars, I thought I would be able to do the same and do this on my own.
Thank you very much for all of your time and help on this, I really appreciate it a lot. Very good to know that there are people out there willing to try and help a stranger on his precious car.
It's hard to find videos on the different things that could be wrong with my car. I felt really lucky that I was able to find the ecu replacement videos, then the help you've given me on how to test the ignition coils. The rest of the possible problems seem hard to find good videos or pictures on. I am very, very new to this and just really hoped I would be able to fix this on my own.
Today's my dad's birthday, he passed away five months ago due to cancer. He took pride in his cars, I thought I would be able to do the same and do this on my own.
Thank you very much for all of your time and help on this, I really appreciate it a lot. Very good to know that there are people out there willing to try and help a stranger on his precious car.
Troubleshooting isn't easy and quick. It's a process. Though, in this case, it makes total sense to take your SC to the mechanic. If your mechanic finds the issue, please do Club Lexus a favour and post your solution here! 
Best of luck to you.
02-19-14, 08:24 PM
#32
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Thread Starter
I've actually been at this for about 2 weeks now, researching and trying little things as I awaited the arrival of the ecu unit. It was today that I finally began trying to go outside the norm and try whatever I needed to do to get it working.
Thank you again and I will definitely keep you posted
Thank you again and I will definitely keep you posted
02-20-14, 10:03 AM
#33
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Thread Starter
Ok, so I found the problem. I took it this morning to meineke and they told me it was the catalytic converters. They showed me of it looked inside, they were bad and had holes inside of them with a lot of ash and looked burned up. $900 to fix plus the fuel injector cleaning job and oil leak fix.
So they're putting in a new pair of catalytic converters that they have to customize a little because of how these carss have them at a slight angle. I'm glad I found the problem, I'll update you all with the outcome. For now, I'm still trying waiting
So they're putting in a new pair of catalytic converters that they have to customize a little because of how these carss have them at a slight angle. I'm glad I found the problem, I'll update you all with the outcome. For now, I'm still trying waiting
02-20-14, 10:42 AM
#34
Ok, so I found the problem. I took it this morning to meineke and they told me it was the catalytic converters. They showed me of it looked inside, they were bad and had holes inside of them with a lot of ash and looked burned up. $900 to fix plus the fuel injector cleaning job and oil leak fix.
So they're putting in a new pair of catalytic converters that they have to customize a little because of how these carss have them at a slight angle. I'm glad I found the problem, I'll update you all with the outcome. For now, I'm still trying waiting
So they're putting in a new pair of catalytic converters that they have to customize a little because of how these carss have them at a slight angle. I'm glad I found the problem, I'll update you all with the outcome. For now, I'm still trying waiting
Hope that makes sense. And also hope this fixes the issue!
02-20-14, 02:16 PM
#35
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Thread Starter
That makes a lot of sense. I'm still here at the shop. They replaced the converters but can not figure out what it is that is causing these catalytic converters to run how. They say it's still running hot. They're stumped and have been working on this for about 7 hours now.
The head mechanic is calling over their boss from another store because he says this is the first time in a long time that they are stumped like this and can not for the life of them figure out what it is that's causing them to run hot.
I really hope they can figure this out. Thanks for everything!
The head mechanic is calling over their boss from another store because he says this is the first time in a long time that they are stumped like this and can not for the life of them figure out what it is that's causing them to run hot.
I really hope they can figure this out. Thanks for everything!
02-20-14, 03:24 PM
#38
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Thread Starter
Well he says he is almost positive that it's the air flow sensor. He can't guarantee it, but thinks it's it. He said he pulled it out of the car and the car still did the same thing so he's leaving towards it. The only problem is its going to costs me an additional $800 for this sensor and he can't even guarantee that it will fix the problem. This plus the $1000 for the catalytic converters he replaced. This story continues to get worse
02-20-14, 03:30 PM
#39
Well he says he is almost positive that it's the air flow sensor. He can't guarantee it, but thinks it's it. He said he pulled it out of the car and the car still did the same thing so he's leaving towards it. The only problem is its going to costs me an additional $800 for this sensor and he can't even guarantee that it will fix the problem. This plus the $1000 for the catalytic converters he replaced. This story continues to get worse
$800? This is exactly why I DIY. Even if it seems like it's in over my head...and 1k for the converters...wow.Please dont spend $800 on an AFM. You can get a working used one for less than 100 bucks on ebay, it'll just require patience. And BTW, you can most definitely replace the AFM yourself! You can even go to your nearest JY and grab one off of a JY SC.
02-20-14, 04:01 PM
#40
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Thread Starter
The guys seemedreally helpful. The problem with the catalytic converters was that they were expensive and he had to cut the new ones down and weld them on so they would fit. It included fixing an Oil leak problem on the bottom pan, and a fuel injector cleaning service.
I'm very very hesitant about this sensor thing though. He said the new problem with getting a junk sensor is that he then won't be able rto tell for sure if that was really the problem or if the used sensor I order us just also messed up. He feels bad about the price and wasn't charging to get it out in, he says that us the price ofit refur bished.
I'm glad you told me about eBay though, I may ask him if u could just order one myself and have himoput it back on.
He mentioned how something (forgot what) was giving 5 volts in, which is normal, but wasn't giving 5 volts out. He says everything is leaning to this sensor. I really hope it is because I can't get my money back on it if it's not the problem.
I'm very very hesitant about this sensor thing though. He said the new problem with getting a junk sensor is that he then won't be able rto tell for sure if that was really the problem or if the used sensor I order us just also messed up. He feels bad about the price and wasn't charging to get it out in, he says that us the price ofit refur bished.
I'm glad you told me about eBay though, I may ask him if u could just order one myself and have himoput it back on.
He mentioned how something (forgot what) was giving 5 volts in, which is normal, but wasn't giving 5 volts out. He says everything is leaning to this sensor. I really hope it is because I can't get my money back on it if it's not the problem.
02-20-14, 04:11 PM
#41
The guys seemedreally helpful. The problem with the catalytic converters was that they were expensive and he had to cut the new ones down and weld them on so they would fit. It included fixing an Oil leak problem on the bottom pan, and a fuel injector cleaning service.
I'm very very hesitant about this sensor thing though. He said the new problem with getting a junk sensor is that he then won't be able rto tell for sure if that was really the problem or if the used sensor I order us just also messed up. He feels bad about the price and wasn't charging to get it out in, he says that us the price ofit refur bished.
I'm glad you told me about eBay though, I may ask him if u could just order one myself and have himoput it back on.
He mentioned how something (forgot what) was giving 5 volts in, which is normal, but wasn't giving 5 volts out. He says everything is leaning to this sensor. I really hope it is because I can't get my money back on it if it's not the problem.
I'm very very hesitant about this sensor thing though. He said the new problem with getting a junk sensor is that he then won't be able rto tell for sure if that was really the problem or if the used sensor I order us just also messed up. He feels bad about the price and wasn't charging to get it out in, he says that us the price ofit refur bished.
I'm glad you told me about eBay though, I may ask him if u could just order one myself and have himoput it back on.
He mentioned how something (forgot what) was giving 5 volts in, which is normal, but wasn't giving 5 volts out. He says everything is leaning to this sensor. I really hope it is because I can't get my money back on it if it's not the problem.
Also have your mechanic read through this thread, it might help him.
https://www.clublexus.com/forums/per...on-issues.html
GL
02-20-14, 04:17 PM
#42
Rookie
Thread Starter
http://m.ebay.com/itm/140869542543?nav=SEARCH
Wow thank you SO SO much for this. I will call them as soon as they open tomorrow and tell them about this. This is great.
Also, I did as you said and checked eBay. I believe I found a brand new sensor! Is this what I am looking for?
F
Wow thank you SO SO much for this. I will call them as soon as they open tomorrow and tell them about this. This is great.
Also, I did as you said and checked eBay. I believe I found a brand new sensor! Is this what I am looking for?
F
02-20-14, 04:26 PM
#43
http://m.ebay.com/itm/140869542543?nav=SEARCH
Wow thank you SO SO much for this. I will call them as soon as they open tomorrow and tell them about this. This is great.
Also, I did as you said and checked eBay. I believe I found a brand new sensor! Is this what I am looking for?
F
Wow thank you SO SO much for this. I will call them as soon as they open tomorrow and tell them about this. This is great.
Also, I did as you said and checked eBay. I believe I found a brand new sensor! Is this what I am looking for?
F
02-21-14, 08:24 AM
#44
Rookie
Thread Starter
Hello!
So I ordered the eBay part that you gave me a link to and hopefully will get it by Monday. I went byt the shop and showed the guy the manual on testing the sensor. He said that is what he had done and why he feels that is the problem. As a last test, that is when he pulled the MAF sensor to see if the car would make a difference and it didn't so he's putting his bets on it. But boy, am I glad I puchased it off of eBay. I know their intentions were good, ordering a refurbished one, but I do not physically have the money to put away another $800 on a sensor like that that's sold on eBay for $45.
So hopefully things will look up. The good thing is, they are very determined to find the problem too and that always helps. I feel like they are on the same team and genuinely want to see it fixed too!
So I ordered the eBay part that you gave me a link to and hopefully will get it by Monday. I went byt the shop and showed the guy the manual on testing the sensor. He said that is what he had done and why he feels that is the problem. As a last test, that is when he pulled the MAF sensor to see if the car would make a difference and it didn't so he's putting his bets on it. But boy, am I glad I puchased it off of eBay. I know their intentions were good, ordering a refurbished one, but I do not physically have the money to put away another $800 on a sensor like that that's sold on eBay for $45.
So hopefully things will look up. The good thing is, they are very determined to find the problem too and that always helps. I feel like they are on the same team and genuinely want to see it fixed too!
02-26-14, 12:11 PM
#45
Rookie
Thread Starter
My mechanic installed the MAF I just purchased. The car is stil having the same problem. Any ideas at all?
Car has been at the shop for 2 weeks and no one can figure out how to fix it
Car has been at the shop for 2 weeks and no one can figure out how to fix it