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camer0nn

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    cameron

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  • Lexus Model
    LS400
  • Lexus Year
    1990

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  1. Car has been to an auto sparky now. I got it back ($400 later!) They got the fuel pump going again but it would seem I'm not back to a couple of steps ago. The car will start, splutter and die. I can't get it to stay running. They also informed me that there is no issue with the battery. They recommended that I take the car to a tuner. I don't know that that will help me get the car firing. I don't know where to from here at this point. Will have a look at other posts but I'm open to suggestions and when I get round to it will put a vid up of it starting and dying.
  2. Found it, have removed the relay but don't really have any way I can test it (or know of). Might take it into the local auto sparky. I don't think that the fuel filter is the issue as the pump isn't going when wired into the car. I will check the connections related to the fuel system and see how I go. Getting close to having to call out an auto sparky to fault properly.
  3. Okay, So I got the ECU back - no fault. I have gone back to basics for a car to run, air, fuel and spark. I have air and spark but when I removed one of the banjo bolts on the fuel rail (key to turned to ignition position) no fuel came out. The fuel pump was not making any noise so I removed it and ran 12v across it. It worked. So somehow there is now power getting to the fuel pump when its in the car? I ran a multimeter over it while in the car and there was zero current passing across the terminals. I have yet to test the fuel pump relay but not sure where it is. Also do these cars have immobilizers? I'm wondering if I have somehow activated it (I don't have the key with all the buttons on it) and now can't deactivate it. Have had the battery out the car and it charges to 14v and holds about 11.85v under load
  4. Hey guy (@curiousB) thanks for your response - greatly appreciated. The car was running with me applying a little gas. I was doing so to keep the revs up to stop the car stalling. Once it was warm it ran fine. This is why I thought to replace the IAC valve and coolant temp sensor (to stop the cold stalling). I tested the volts, had 12.5v, cranked the terminals up tight still no go. I will try a different battery to eliminate the battery as an issue. ^ Again will check with new battery and ensure terminals are well taken care of. As for the coil pack, when I got back home and turned the car off it was still running with key out of ignition and in hand. Will check contacts. ^^^ Should be okay when it fires again. I contacted an ECU specialist and he said he would take a look at it for free, so will do that anyway given the offer. Once I get it back I will work through your great suggestions and see how I go. Will also get a recording of it firing if no luck so you can see and hear for yourself Thanks heaps for your help. Will keep posted
  5. I have a 1990 Toyota Celsior which was running fine apart from stalling when starting cold. Currently the car will fire but wont run. It revs up and then dies. So what I have done Firstly I began by replacing the coolant temp sensor. It still ran after this but still stalled when cold. Got given a replacement IAC valve (with a different part number but was assured it would be okay) so I installed it. The car would not start with the new IAC valve in and just clicked like a flat battery but I had loads if juice and even tried jump starting of another vehicle - no luck. Replaced the IAC valve with the original one. Tried to start but still clicked like flat battery. I hooked it up to another car and managed to get it to jump start. Took it for a spin around the block, parked back home and then it wouldn't turn off. I removed the coil pack to kill it. Since putting the coil pack back on it will not start. I bought a new IAC valve (with the correct part number) and installed it. Car will still not start. I checked the codes and came back with a 51 - switch condition signal but don't really think this is the cause of the issue. Where to now? I thought perhaps that because I put the incorrect IAC valve in that I possibly have done something to the ECU? Can this happen My next best guess is to replace the ECU but I would like to know if anyone has better suggestions to try first? Any help is greatly appreciated. If it helps I can fire up the car and upload a video of it trying to start so you can hear and see for yourselves.
  6. Welcome to the Lexus forums camer0nn :)

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