my 89 7mgte build up thread!
- Thread starter mk3forme
- Start date
Great news Allen, glad to hear. I can't wait to see the vid.:icon_bigg
Congrats :biglaugh: :biglaugh:
Congrats :biglaugh: :biglaugh:
thanks guys. I just wish now Chicago was only a couple of weekends away and not already past.
I forgot to mention that for some reason after several times of starting with short spurts of idling, the last time starting the idle was surging. It hadnt done this any of the previous times. I checked my codes and came up with a 12. Im going to reset it and see if it comes back. If it does i will have to see about tracking that down as well.
I forgot to mention that for some reason after several times of starting with short spurts of idling, the last time starting the idle was surging. It hadnt done this any of the previous times. I checked my codes and came up with a 12. Im going to reset it and see if it comes back. If it does i will have to see about tracking that down as well.
JustAnotherVictim
Supramania Contributor
come on Vic be more specific. Anyone have any ideas before I attempt to track down the problem. I no longer have any codes. After I reset the code 12 It hasnt come back. YET. The timing is correct and it advances like its suppose to after I remove the jumper wire. Idle will not drop below 1500 and it goes up and down and a constant pace. Fuel pressure is about 38psi .
At least I did fix my power steering leak. Installed my radiator. Had to go to Advance to find a plug for that extra hole in the bottom of the Koyo. I forgot about that. Had water all over the floor.:biglaugh:
At least I did fix my power steering leak. Installed my radiator. Had to go to Advance to find a plug for that extra hole in the bottom of the Koyo. I forgot about that. Had water all over the floor.:biglaugh:
Oh yeah and Jay I let my wife read what you said about the pants in the empty engine bay. She said that was her idea of breaking in the car:naughty:
Sounds like a vacuum leak Allen try spraying carb cleaner around the intake and hoses if it speeds up you have a leak.
JustAnotherVictim
Supramania Contributor
Code 12 is a lapse in the rpm reading iirc.
SOooo... CPS, starter circuit or ecu. I'd check the wiring and connections on the cps.
That always seem to go to crap. If it doesn't show up again it was probably nothing.
SOooo... CPS, starter circuit or ecu. I'd check the wiring and connections on the cps.
That always seem to go to crap. If it doesn't show up again it was probably nothing.
small update. Still having the same problem. I used different clamps on a couple of hoses I was concerened about. I also found that my #5 and #6 injector clips were reversed. I was going by the color clips and not wires. read here http://www.supramania.com/forums/showthread.php?t=41296&highlight=idle
so I started it up and it just idled fast though it still seems higher than normal for a cold start. So I went to move it and then it started idling eratic again. So it only appears to run with out the idle problem cold and only for a minute or so. Still no codes. I checked the TPS again and it was all in spec. The pins are upside down compared to the TSRM correct? The pic in the manual shows the TPS facing the opposite way. I adjusted the TPS when I was putting the upper intake back together so I wouldnt have to fool with it installed, so I figured it would probably check out. :3d_frown:
I still havent tried your suggestion John cause I dont have any carb cleaner. I will get some tomorrow and check for vacuum leaks. Im not doubting I have a vacuum leak but I dont see that causing the constant fast idle or the constant up and down. But I dont know much about cars either:naughty:
I still need to check the AFM but I dont have an analog meter and I tried with my digital but didnt get any resistance at all. Does that make a difference? Also it listed testing the same pins twice but in different orders. Will you get different readings but touching pins with different probes? Shows how much I know about electronics.:3d_frown:
If any one has any other suggestions then please chime in.
so I started it up and it just idled fast though it still seems higher than normal for a cold start. So I went to move it and then it started idling eratic again. So it only appears to run with out the idle problem cold and only for a minute or so. Still no codes. I checked the TPS again and it was all in spec. The pins are upside down compared to the TSRM correct? The pic in the manual shows the TPS facing the opposite way. I adjusted the TPS when I was putting the upper intake back together so I wouldnt have to fool with it installed, so I figured it would probably check out. :3d_frown:
I still havent tried your suggestion John cause I dont have any carb cleaner. I will get some tomorrow and check for vacuum leaks. Im not doubting I have a vacuum leak but I dont see that causing the constant fast idle or the constant up and down. But I dont know much about cars either:naughty:
I still need to check the AFM but I dont have an analog meter and I tried with my digital but didnt get any resistance at all. Does that make a difference? Also it listed testing the same pins twice but in different orders. Will you get different readings but touching pins with different probes? Shows how much I know about electronics.:3d_frown:
If any one has any other suggestions then please chime in.
JustAnotherVictim
Supramania Contributor
I mean the pins from top to bottom are not the same in the pic as on the car. The pic in my manual sais that E2 is on the top when its on the bottom. You have to compare the tabs on the plug to realize this. Besides that you had be second guessing myself, AGAIN, so I went to readjust my TPS and wasted an hour doing so. You dont get the correct readings if you use E2 as the top pin anyway.
I took Johns advice and sprayed car cleaner around the intake fittings. I didnt notice an increase in idle, as I didnt think I would, since the idle is not steady anyway. But it did enable me to hear a pretty big leak between the throttle body and the plenum. I took it apart and made a better gasket. After seeing the gasket in there I can totally see why it was leaking. There was enough material at the top to make a seal. I got that wrapped up and back together, but its still doing the same thing. I guess I will try again tomorrow.:3d_frown: Frustration and doubt is setting in. Im getting tired of working on this thing. I think I need to let it set for a week or so and regain my composure.
I also purchased an analog volt meter and checked the afm and it checks out. Im running out of options here. I will try spraying some more intake connections tomorrow to see if I come up with anything. I will also respray the throttle body I redid to make sure it did in fact seal. By the way I am using gasket dressing and not just the paper itself.
I took Johns advice and sprayed car cleaner around the intake fittings. I didnt notice an increase in idle, as I didnt think I would, since the idle is not steady anyway. But it did enable me to hear a pretty big leak between the throttle body and the plenum. I took it apart and made a better gasket. After seeing the gasket in there I can totally see why it was leaking. There was enough material at the top to make a seal. I got that wrapped up and back together, but its still doing the same thing. I guess I will try again tomorrow.:3d_frown: Frustration and doubt is setting in. Im getting tired of working on this thing. I think I need to let it set for a week or so and regain my composure.
I also purchased an analog volt meter and checked the afm and it checks out. Im running out of options here. I will try spraying some more intake connections tomorrow to see if I come up with anything. I will also respray the throttle body I redid to make sure it did in fact seal. By the way I am using gasket dressing and not just the paper itself.
Hang in there Allen it can get aggrevating sometimes but walk away and take a break . When you get back at it you might find the problem. Talk to IJ he might be able to help you. John
JustAnotherVictim
Supramania Contributor
Allen you're looking at the diagram for the N/A, at least that's what I get from what you're telling me.
The turbo diagram is right below it.
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=FI&P=101
The turbo diagram is right below it.
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=FI&P=101
yeah sounds like maybe the cps wiring. if the pins inside the plug from the cps to the harness are loose, it will cause some intermittent issues as well as a code 12.
have you checked the IDL circuit on the tps?
btw, im only about an hour from you if you needed any help down the road.
have you checked the IDL circuit on the tps?
btw, im only about an hour from you if you needed any help down the road.
JustAnotherVictim
Supramania Contributor
Thanks DBsupe I appreciate the offer!!! I hope it doesnt come down to that but its nice to know I have someone close to lend a hand. And yes I checked all the pins as per the TSRM. Everything specs out. Im pretty certain the TPS is good.
And yes Vic at first I was looking at the NA diagram. The two GTE pics below that are a little confusing as one has the E2 pin on the bottom and one on the top. The pics have the TPS turned in different positions.
Thanks John I appreciate the support. IJ is exactly who im going to contact along with a couple of others. The thing that gets me about this is the initial cold start. If I were to go start the car right now after sitting all night. The idle will be high as expected and will run like that for a minute or so. When the idle starts coming down like usual when the cars starts to warm, then that is when the issue starts. I think that is the key.
And yes Vic at first I was looking at the NA diagram. The two GTE pics below that are a little confusing as one has the E2 pin on the bottom and one on the top. The pics have the TPS turned in different positions.
Thanks John I appreciate the support. IJ is exactly who im going to contact along with a couple of others. The thing that gets me about this is the initial cold start. If I were to go start the car right now after sitting all night. The idle will be high as expected and will run like that for a minute or so. When the idle starts coming down like usual when the cars starts to warm, then that is when the issue starts. I think that is the key.
Allen - Take a look at this:
http://www.mkiiitech.com/forums/viewtopic.php?t=876
I'm starting to suspect your ISCV.
http://www.mkiiitech.com/forums/viewtopic.php?t=876
I'm starting to suspect your ISCV.
Hey welcome John. Now I have some professional help in here.:biglaugh: I know what Ill be doing for the next couple of hours. I hope this info will help, although the article doesnt mention anything about erratic idle like I have.