Weird Starting problem, anyone help?
So riddle me this batma....errr clublexus. So in the morning at about 8AM I try to start my 93 sc300. It turns over for about half a second (hits 1k rpm's) then immediatly turns off. Tried to start it about 25 times yesterday morning and this morning, each day. Same exact problem.
Now the weird part is that on both days I get home from work at 5(yesterday, 3 today), walk over to the car and it starts right up the first time. Plugs are new, battery is relatively new, ECU is about two weeks old. The ONLY check engine light is the knock sensor which has been on for much longer than this problem. I drove it around the block both days, no problem at all with driving, no stutter or anything. I can walk outside any time during the day and start her right up. But first thing in the morning it wont start and I have to keep riding the motorcycle to work. What the hell??:uh: I know the knock sensor needs to be replaced I'm just waiting for it to come in. There is no way that the knock sensor is causing this very time specific problem is there? |
Has it ever turned off while your diving the car?
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Originally Posted by sc300lexii
(Post 7379148)
Has it ever turned off while your diving the car?
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Originally Posted by Piratse
(Post 7379462)
Not since I replaced the ECU about 2 weeks ago.
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Originally Posted by sc300lexii
(Post 7380854)
this happened too me, what ecu did you replace?
Anyone have a pic of the fuel pump ecu so I can see the easiest way to remove it? I have the below pic just wanted an actual pic. http://i208.photobucket.com/albums/b...6661scfpcu.gif AS ALWAYS I WILL LEAVE MY ORIGINAL QUESTIONS IN CASE SOMEONE NEEDS THIS IN THE FUTURE I THINK this will fix the problem (oddly enough I found the link through a different forum as search pulled up nothing for me on here) https://www.clublexus.com/forums/per...tures-faq.html This did not fix my problem but the link could work for others. |
So I got in there and someone had already bypassed the ecu, BUT they cut two extra wires, so I tied those back in. I guess I will find out tomorrow if that worked.
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Originally Posted by Piratse
(Post 7381136)
So I got in there and someone had already bypassed the ecu, BUT they cut two extra wires, so I tied those back in. I guess I will find out tomorrow if that worked.
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Originally Posted by sc300lexii
(Post 7381681)
i think its probably the fuel pump too, did you check if it was working properly ? it could also be a dirty fuel filter. The 12v mod should work ! good luck dude let me know what happens so i can do it too my sc
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Well the pressure in the tank was not the problem either. Got home, opened the gas cap and released all the pressure. Started right up......This is a weird and very frustrating problem. Anyone have any more idea?
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did you ever get this fixed? My car is doing the same thing.
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Originally Posted by GS300CMO
(Post 7693816)
did you ever get this fixed? My car is doing the same thing.
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Have the SAME EXACT issue down to the T. Had to do the 12V mod a while back when the fuel pump ecu went. my knock sensor is also bad, but as you confirmed it is not the knock sensor.
So all you did was change the fuel pump, and presto, problem solved? |
Originally Posted by Candela
(Post 7702302)
Have the SAME EXACT issue down to the T. Had to do the 12V mod a while back when the fuel pump ecu went. my knock sensor is also bad, but as you confirmed it is not the knock sensor.
So all you did was change the fuel pump, and presto, problem solved? |
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