Well I did a 7mgte in swap with a 5speed trans in a na supra with an auto trans. I have everything hooked up and the car starts and runs for 2 seconds then dies out
car runs and stays on for 2 seconds then dies out
- Thread starter 89supra884
- Start date
While some suggest it will run (idle only) without it, look at the AFM plug and be sure its plugged in and functioning properly. If the connector is bad or its not connected this tends to happen in my experience. Other than that, check for codes and get back to us or don't expect too much help.
yeh,not near enough information to help you...stock 7M, fuel,air, computer and everything? whats your timing set at? check/clear codes.
My guess is the MAF , thats what happened to me one time, check the plug , tap on it , wiggle , just to see if any difference if so might wanna clean/figure out another resolution or get a new maf
Well the cars is completly stock and sorry for not explaining a whole lot I was working on the car while I was posting this thread. I just swapped the motor in and everything is hooked up I looked over and over again. The car cranks over then idles for a split second then dies out. I tried giving it gas and it just reved up and turned off. The thing is my car also had a viper security alarm on it when I first got it so idk if that matters. Then I got some starting fluid and sprayed some in and it runs only if I keep on spraying it in there when I stop it dies out once again.so could this be a problem where I'm not getting enough fuel???
Yes. It was apparent from the first post the engine may be running off the cold start injector and the use of starting fluid seems to prove it...
im just thinking that maybe the security system is killing the fuel pump. like the blue viper light is on, so i may have it towed in this weekend to a electronics shop to have them complety disable the security system. , otherwise what would cause it just to run off the cold start injector
One way to prove it's the CSI is to unplug the connector on the thermal time switch. If the engine then refuses to start at all you'll know that's what was running it. Course, that won't help any in resolving the real issue.
Usually alarm systems interlock the starter but cutting the fuel pump is in my opinion a better setup. In fact I rewired my stock alarm to do just that. I don't know how your alarm is wired but since the car doesn't have a separate fuel pump for the cold start injector (think about it) I'm betting that's not the case. They may have wired it to cut injector power but since typical installers aren't that innovative I'm also betting that's not the case.
I'd be checking injector wiring and seeing if the pump runs after the key is released. Does the engine run if +B and FP are jumpered? You used a GTE harness right? The N/A harness controls the fuel pump via the AFM while the GTE does not. And as mentioned codes would be nice although based on the symptoms it's unlikely you're going to have any that are related to this...
Usually alarm systems interlock the starter but cutting the fuel pump is in my opinion a better setup. In fact I rewired my stock alarm to do just that. I don't know how your alarm is wired but since the car doesn't have a separate fuel pump for the cold start injector (think about it) I'm betting that's not the case. They may have wired it to cut injector power but since typical installers aren't that innovative I'm also betting that's not the case.
I'd be checking injector wiring and seeing if the pump runs after the key is released. Does the engine run if +B and FP are jumpered? You used a GTE harness right? The N/A harness controls the fuel pump via the AFM while the GTE does not. And as mentioned codes would be nice although based on the symptoms it's unlikely you're going to have any that are related to this...
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when i bought the engine it came with a gte engine wiring harness. and that is what i used. i was thinking of trying to jump the fuel pump tonight but im not sure which terminals on the connector need to jump. but i also think it is something with the alarm because my headlight will not turn off for some reason. like they will go down, but will not turn off. ya and i am not throwing any codes right now.
Look under the little cover for the diag block. If it's missing:
http://www.cygnusx1.net/Supra/TechTips/engine_error_codes.aspx
http://www.cygnusx1.net/Supra/TechTips/engine_error_codes.aspx
i havent gotten a chance to check for codes yet, i know for a fact the headlights is wiring problem, but could the car not starting possibly be a fried ecu?
thats what i thought, i know its rare, and i have an extra ecu at my house i may just try to plug it in real quick and at least eliminate that problem, but i am getting that alarm removed and put back to stock this weekend and that will eliminate that problem also. i just cant see what else it would be, i havent talked to anyone else who has had this problem,
not trying to piss u off or anything, i was just thinking of some things......... but i have not tried to jump the fuel pump yet or check codes, i have been really busy with school and work. i was just throwing some things out there that i wasnt to sure of. as soon as i jump the fuel pump and check the codes ill let you know
You can't see what else it would be? Are you serious?
It's not the ECU, not the alarm, and there's little point in continuing the thread until you do the stuff suggested and provide feedback.
And not that I think codes are important in this case but wtf is up with this:
I'm not pissed but you're circling the drain...
It's not the ECU, not the alarm, and there's little point in continuing the thread until you do the stuff suggested and provide feedback.
And not that I think codes are important in this case but wtf is up with this:
jetjock;1548032 said:
89supra884;1548051 said:
89supra884;1549302 said:
I'm not pissed but you're circling the drain...
well i went home last night and check the codes and i got 2 of them
one was code 51, and the other was code 32. i removed my ac compressor, condensor and lines for the ac, which might explain code 51, but im not sure what 32 is.
thankyou
one was code 51, and the other was code 32. i removed my ac compressor, condensor and lines for the ac, which might explain code 51, but im not sure what 32 is.
thankyou
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i know that 32 has something to do with the hac but im not sure what that does. and it says that 51 will have to do with the ac, or the tps, but i dont think that the tps would kill the car right after it tries to start
