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I have a 1992 SC400 that I've been doing repairs on since i acquired the car less than a month ago. From oil leaks to sensors.
I now have some other problems. I'm getting codes 31, 52, & 55. I replaced both knock sensors and still get both codes. Does anyone know what this could be ?
I also had another problem happen yesterday when i was driving on the interstate. Car revved high but wouldn't move. What could this be ?
Fixing the ECU solved my knock sensor problem. Its wiring is at a spot on the circuit board that's very prone to decay from capacitor leakage and/or moisture.
Fixing the ECU solved my knock sensor problem. Its wiring is at a spot on the circuit board that's very prone to decay from capacitor leakage and/or moisture.
It's under a black plastic cover under the passenger carpet, where you rest your feet. There's a good chance you won't actually be able to see the capacitor leakage until removing them from the board, however. Mine looked good on initial inspection but turned out to have a lot of damage. They're all past the shelf life of the capacitors used at the time, so just go ahead and get it serviced if you don't have reason to believe it's already been done.
It's under a black plastic cover under the passenger carpet, where you rest your feet. There's a good chance you won't actually be able to see the capacitor leakage until removing them from the board, however. Mine looked good on initial inspection but turned out to have a lot of damage. They're all past the shelf life of the capacitors used at the time, so just go ahead and get it serviced if you don't have reason to believe it's already been done.
What makes you think it's already been rebuilt? Unless it's got a sticker on the case from whoever serviced it, I would assume otherwise... Most of the leakage will be concealed directly below the capacitors, but that sure looks like you've got something going on around the capacitor in the last pic.
As for the knock sensors, there's no way you'll see the issue without full disassembly. The metal brace hides the input terminals which are susceptible to corrosion.
What makes you think it's already been rebuilt? Unless it's got a sticker on the case from whoever serviced it, I would assume otherwise... Most of the leakage will be concealed directly below the capacitors, but that sure looks like you've got something going on around the capacitor in the last pic.
As for the knock sensors, there's no way you'll see the issue without full disassembly. The metal brace hides the input terminals which are susceptible to corrosion.
It has rebuilt on the casing & it wasn't bolted in. Came right out. Also some capacitors have been re soldered.
Well, that's a pretty strong hint then! Unless someone pulled a fast one on you and swapped over a "rebuilt" cover for no good reason... Hopefully, they replaced all 9 or whatever caps, not just a few of them.
Brace, bridge, whatever. It's the thick metal portion of the casing that covers up where the wiring harness plugs in.
Well, that's a pretty strong hint then! Unless someone pulled a fast one on you and swapped over a "rebuilt" cover for no good reason... Hopefully, they replaced all 9 or whatever caps, not just a few of them.
Brace, bridge, whatever. It's the thick metal portion of the casing that covers up where the wiring harness plugs in.
Oh
How do remove it. Don't want to damage anything and I hope it wasn't swapped.
That last picture, tdt2 is right. There is something up with that capacitor...it will run you around $100-150 to get the ECU rebuilt. Tanin Electronix would be your best bet.
That last picture, tdt2 is right. There is something up with that capacitor...it will run you around $100-150 to get the ECU rebuilt. Tanin Electronix would be your best bet.
04-14-15, 06:36 PM
Slew Of Problems(92 SC400)
