Trouble getting the car started after rebuild
#527
RX-7 Bad Ass
iTrader: (55)
Air pump is removed, o2 feedback off, I tried to reset the PFC via the Commander, no change whatsoever.
I don't think the problem is electrical. I'm thinking more and more of sending the LIM for a resurfacing (idle drops when I spray brake cleaner/starting fluid near the LIM to engine block gasket).
A little bit off-topic: I cannot find where I am supposed to plug the power steering. I see the plug in the battery harness but I can't find where it goes to!
I don't think the problem is electrical. I'm thinking more and more of sending the LIM for a resurfacing (idle drops when I spray brake cleaner/starting fluid near the LIM to engine block gasket).
A little bit off-topic: I cannot find where I am supposed to plug the power steering. I see the plug in the battery harness but I can't find where it goes to!
You can see the 1 wire to the left of the banjo bolt.
Dale
#528
The PS pump has a single terminal sticking straight up that normally has 1 wire going to it, it's easily visible when you pop the hood, it's not hidden. Not the best picture, but from a quick Google image search -
You can see the 1 wire to the left of the banjo bolt.
Dale
You can see the 1 wire to the left of the banjo bolt.
Dale
#529
RX-7 Bad Ass
iTrader: (55)
Hard to say. You may be able to make something that will work. I think it's mainly there to bump the idle up when the PS is in use.
Dale
Dale
#531
I received the LIM from the machine shop.
I installed it. No change. If I spray brake cleaner/starting fluid around the same area (LIM to engine block), idle still drops (but by far less).
High bouncing idle still there. Engine dies if I get VTA1 and VTA2 within specs.
I've been chasing that problem for a long time now.
I ordered FD01-32-611A from the local dealership, which seems to be the harness that goes to the PS pump. It does not fit my connector, and it is not refundable.
Another bad day.
I installed it. No change. If I spray brake cleaner/starting fluid around the same area (LIM to engine block), idle still drops (but by far less).
High bouncing idle still there. Engine dies if I get VTA1 and VTA2 within specs.
I've been chasing that problem for a long time now.
I ordered FD01-32-611A from the local dealership, which seems to be the harness that goes to the PS pump. It does not fit my connector, and it is not refundable.
Another bad day.
#533
RX-7 Bad Ass
iTrader: (55)
I think that may be the right connector actually. The other end is typically zip tied to the PS hose. That white 1-wire connector goes to the AC compressor.
What kind of shape is your ACV block off plate?
Also, refresh my memory - what is the status on the screw that's just below the entrance to the throttle body? For the PFC it's typically screwed all the way in then back out a half turn.
Dale
What kind of shape is your ACV block off plate?
Also, refresh my memory - what is the status on the screw that's just below the entrance to the throttle body? For the PFC it's typically screwed all the way in then back out a half turn.
Dale
#534
I think that may be the right connector actually. The other end is typically zip tied to the PS hose. That white 1-wire connector goes to the AC compressor.
What kind of shape is your ACV block off plate?
Also, refresh my memory - what is the status on the screw that's just below the entrance to the throttle body? For the PFC it's typically screwed all the way in then back out a half turn.
Dale
What kind of shape is your ACV block off plate?
Also, refresh my memory - what is the status on the screw that's just below the entrance to the throttle body? For the PFC it's typically screwed all the way in then back out a half turn.
Dale
I renewed all block-off plates on LIM with new RTV.
Screw under throttle body is all the way in, then backed out a half turn.
Next logical step would be to change the LIM to engine block gasket... But like I said I had 2 used ones and they are both leaking at the same place, which is kind of strange... That gasket isn't that cheap neither. I'm not a big fan of spending money for no reason.
I think at this point I should come back to the basic stuff. Idle is much better when it is cold, gets bad when it reaches operating temperature. I thought this would be some kind of indication...
Thanks for all your help guys!
#535
RX-7 Bad Ass
iTrader: (55)
The ACV has a big weird check valve that goes in the manifold. I call it the "wagon wheel", it looks like an old wagon wheel. That keeps exhaust gasses from backing into the ACV. That needs to be there or you can have problems getting that block of plate to seal up. Is that in there?
I think you're getting there, it's come a LONG way for sure!
I wonder if you just need to do the PFC idle re-learn if it's flaky when warm. Is it at least somewhat steady when warm or will the car want to die?
Dale
I think you're getting there, it's come a LONG way for sure!
I wonder if you just need to do the PFC idle re-learn if it's flaky when warm. Is it at least somewhat steady when warm or will the car want to die?
Dale
#536
The ACV has a big weird check valve that goes in the manifold. I call it the "wagon wheel", it looks like an old wagon wheel. That keeps exhaust gasses from backing into the ACV. That needs to be there or you can have problems getting that block of plate to seal up. Is that in there?
I think you're getting there, it's come a LONG way for sure!
I wonder if you just need to do the PFC idle re-learn if it's flaky when warm. Is it at least somewhat steady when warm or will the car want to die?
Dale
I think you're getting there, it's come a LONG way for sure!
I wonder if you just need to do the PFC idle re-learn if it's flaky when warm. Is it at least somewhat steady when warm or will the car want to die?
Dale
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MuRCieLaGo (06-12-20)
#538
RX-7 Bad Ass
iTrader: (55)
^Yep, that's it. Good find on the picture!
Dale
Dale
#540
RX-7 Bad Ass
iTrader: (55)
Better picture of it on the side -
https://www.atkinsrotary.com/store/8...80-13-730.html
Good news is it looks like Mazda used the same part forever.
Will not having that cause idle problems? I don't think so. You could have a small exhaust leak there, though.
May want to post some more pictures up of the engine to lower intake manifold and how everything is set up there.
Dale
https://www.atkinsrotary.com/store/8...80-13-730.html
Good news is it looks like Mazda used the same part forever.
Will not having that cause idle problems? I don't think so. You could have a small exhaust leak there, though.
May want to post some more pictures up of the engine to lower intake manifold and how everything is set up there.
Dale
#541
Better picture of it on the side -
https://www.atkinsrotary.com/store/8...80-13-730.html
Good news is it looks like Mazda used the same part forever.
Will not having that cause idle problems? I don't think so. You could have a small exhaust leak there, though.
May want to post some more pictures up of the engine to lower intake manifold and how everything is set up there.
Dale
https://www.atkinsrotary.com/store/8...80-13-730.html
Good news is it looks like Mazda used the same part forever.
Will not having that cause idle problems? I don't think so. You could have a small exhaust leak there, though.
May want to post some more pictures up of the engine to lower intake manifold and how everything is set up there.
Dale
I joined a picture of the area. I'm not sure what we could see here.
I'm back to basic stuff, I already mentioned it here:
I'm sick of unbolting the LIM, so the turbo isn't bolted to the exhaust manifold. I'm going to bolt it back when the idle is fixed. But could it be the cause of my actual issue?
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MuRCieLaGo (06-24-20)
#545
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rotary_fan (06-25-20)
#547
Alright.
Yesterday I received:
I installed the new LIM to engine block gasket. Idle isn't affected by brake cleaner in that area anymore. I had 2 apparently used good condition gaskets, and obviously they were both leaking at the same place. I'm quite surprised that the new gasket fixed the leak.
Ide still isn't satisfying, but I still installed everything back (turbo/exhaust) and went outside for the first ride since more than 4 years.
I drove the car for a total of 1 mile.
Car smokes blue a lot. Idle or when I drive the car it doesn't really matter. Engine has been running for 30 minutes today, including the ride. Could it be residual oil from the rebuild? Engine ran for a total of about 2 hours since the last time I sprayed oil in the block, to build compression.
What could it be? I'm afraid.
EDIT - Quick update:
I noticed barely fresh oil in the turbo. Picture is after I cleaned it a little bit.
I started the car 1 hour after I stopped it (and it was still hot, of course). It was barely smoking.
At this point, I think I am right to assume that the turbo is the issue. What do you think?
Yesterday I received:
- OEM LIM to engine block gasket
- CPU #2
I installed the new LIM to engine block gasket. Idle isn't affected by brake cleaner in that area anymore. I had 2 apparently used good condition gaskets, and obviously they were both leaking at the same place. I'm quite surprised that the new gasket fixed the leak.
Ide still isn't satisfying, but I still installed everything back (turbo/exhaust) and went outside for the first ride since more than 4 years.
I drove the car for a total of 1 mile.
Car smokes blue a lot. Idle or when I drive the car it doesn't really matter. Engine has been running for 30 minutes today, including the ride. Could it be residual oil from the rebuild? Engine ran for a total of about 2 hours since the last time I sprayed oil in the block, to build compression.
What could it be? I'm afraid.
EDIT - Quick update:
I noticed barely fresh oil in the turbo. Picture is after I cleaned it a little bit.
I started the car 1 hour after I stopped it (and it was still hot, of course). It was barely smoking.
At this point, I think I am right to assume that the turbo is the issue. What do you think?
Last edited by MuRCieLaGo; 07-01-20 at 06:25 PM.
#549
RX-7 Bad Ass
iTrader: (55)
Quite possible the turbo bearings took some damage when you had your first engine with oil pressure problems. But, I'd get some more easy miles on the car to make sure you get everything to seat and burn off. You probably have a LOT of oil and residual crap in the exhaust from all the work.
I'm happy the gasket fixed that leak, still mystified that it would have been that much of a leak, though!
So what is your idle doing now?
Dale
I'm happy the gasket fixed that leak, still mystified that it would have been that much of a leak, though!
So what is your idle doing now?
Dale