Help! Please help!
07-15-11, 12:49 AM
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Help! Please help!
I've been looking on all the rx7 forums to find similar problems and I have been going in circles. I was told that RX7 CLUB was the place to come, Please help.
I have a 93 rx7 twin turbo completely stock. A new 13 b as the old engine was locked up from sitting for 9 years.
From what I can remember was the car was running, but it didn't seem to be running at the fullest potential, I brought it to a auto shop, and they told me I needed a new engine. I purchased a new engine from atkins rotary and the engine sat in the crate for 6 years. It took 3 years to get to where I am at now because most of the parts was just weathered. Parts for this car was hard to find. I also had to purchase the original 93 RX7 workshop manual, vacuum diagram, and wiring diagrams.
On January 9 2011 I got to start my car for the first time. The engine ran and sounded fine. I drove the car about twice a week for a month and then I wanted to order a blow off valve. Instead of doing that, my bf decided to unhook the charge relief off the intake box. The car drove fine. Finally I had my car painted, and when I drove my car it was fine, until a week later when I was driving it started to miss and pop. It wouldn't go past 3500 rpm.
I have done the following, replaced spark plugs and wires,checked fuel pressure-ok, vacuum, replaced throttle position sensor & adjusted, smoked tested for vacuum leaks-no leaks found, tested boost sensor-working fine, vacuum pump is running all the time-not sure if this is supposed to happen.
I have even grounded the engine and
I can't pull any engine codes, but I have pulled codes before; so I know that's working.
My instrument cluster is working, while driving my car will not go past 3500 rpm it will miss and backfire. While revving it up in neutral it will rev to 4500 rpm miss for a second then rev to redline. Some times after warming up it won't rev past 4000 in neutral.
7/14/2011 - We have checked for exhaust restriction, and with exhaust it is still missing. The fuel smells rich, and again at WOT it misses.
Any help would be greatly appreciated.
I have a 93 rx7 twin turbo completely stock. A new 13 b as the old engine was locked up from sitting for 9 years.
From what I can remember was the car was running, but it didn't seem to be running at the fullest potential, I brought it to a auto shop, and they told me I needed a new engine. I purchased a new engine from atkins rotary and the engine sat in the crate for 6 years. It took 3 years to get to where I am at now because most of the parts was just weathered. Parts for this car was hard to find. I also had to purchase the original 93 RX7 workshop manual, vacuum diagram, and wiring diagrams.
On January 9 2011 I got to start my car for the first time. The engine ran and sounded fine. I drove the car about twice a week for a month and then I wanted to order a blow off valve. Instead of doing that, my bf decided to unhook the charge relief off the intake box. The car drove fine. Finally I had my car painted, and when I drove my car it was fine, until a week later when I was driving it started to miss and pop. It wouldn't go past 3500 rpm.
I have done the following, replaced spark plugs and wires,checked fuel pressure-ok, vacuum, replaced throttle position sensor & adjusted, smoked tested for vacuum leaks-no leaks found, tested boost sensor-working fine, vacuum pump is running all the time-not sure if this is supposed to happen.
I have even grounded the engine and
I can't pull any engine codes, but I have pulled codes before; so I know that's working.
My instrument cluster is working, while driving my car will not go past 3500 rpm it will miss and backfire. While revving it up in neutral it will rev to 4500 rpm miss for a second then rev to redline. Some times after warming up it won't rev past 4000 in neutral.
7/14/2011 - We have checked for exhaust restriction, and with exhaust it is still missing. The fuel smells rich, and again at WOT it misses.
Any help would be greatly appreciated.
07-15-11, 11:22 AM
#2
Likely limp mode due to a failed metering oil pump (MOP). I'd suggest checking codes again, as well as testing the pump per the FSM: http://www.fd3s.net/engine_codes.html.
07-16-11, 11:26 AM
#3
Full Member
No codes? I was thinking a rotor might have gone, but that wouldn't make since. Probly an easy fix if it isn't throwing any codes, but that just makes it a pain to find the problem. Not sure what it could be.
07-26-11, 03:19 AM
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Likely limp mode due to a failed metering oil pump (MOP). I'd suggest checking codes again, as well as testing the pump per the FSM: http://www.fd3s.net/engine_codes.html.
Its still doing the same thing.
07-26-11, 03:34 AM
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I've been looking on all the rx7 forums to find similar problems and I have been going in circles. I was told that RX7 CLUB was the place to come, Please help.
I have a 93 rx7 twin turbo completely stock. A new 13 b as the old engine was locked up from sitting for 9 years.
From what I can remember was the car was running, but it didn't seem to be running at the fullest potential, I brought it to a auto shop, and they told me I needed a new engine. I purchased a new engine from atkins rotary and the engine sat in the crate for 6 years. It took 3 years to get to where I am at now because most of the parts was just weathered. Parts for this car was hard to find. I also had to purchase the original 93 RX7 workshop manual, vacuum diagram, and wiring diagrams.
On January 9 2011 I got to start my car for the first time. The engine ran and sounded fine. I drove the car about twice a week for a month and then I wanted to order a blow off valve. Instead of doing that, my bf decided to unhook the charge relief off the intake box. The car drove fine. Finally I had my car painted, and when I drove my car it was fine, until a week later when I was driving it started to miss and pop. It wouldn't go past 3500 rpm.
I have done the following, replaced spark plugs and wires,checked fuel pressure-ok, vacuum, replaced throttle position sensor & adjusted, smoked tested for vacuum leaks-no leaks found, tested boost sensor-working fine, vacuum pump is running all the time-not sure if this is supposed to happen.
I have even grounded the engine and
I can't pull any engine codes, but I have pulled codes before; so I know that's working.
My instrument cluster is working, while driving my car will not go past 3500 rpm it will miss and backfire. While revving it up in neutral it will rev to 4500 rpm miss for a second then rev to redline. Some times after warming up it won't rev past 4000 in neutral.
7/14/2011 - We have checked for exhaust restriction, and with exhaust it is still missing. The fuel smells rich, and again at WOT it misses.
Any help would be greatly appreciated.
I have a 93 rx7 twin turbo completely stock. A new 13 b as the old engine was locked up from sitting for 9 years.
From what I can remember was the car was running, but it didn't seem to be running at the fullest potential, I brought it to a auto shop, and they told me I needed a new engine. I purchased a new engine from atkins rotary and the engine sat in the crate for 6 years. It took 3 years to get to where I am at now because most of the parts was just weathered. Parts for this car was hard to find. I also had to purchase the original 93 RX7 workshop manual, vacuum diagram, and wiring diagrams.
On January 9 2011 I got to start my car for the first time. The engine ran and sounded fine. I drove the car about twice a week for a month and then I wanted to order a blow off valve. Instead of doing that, my bf decided to unhook the charge relief off the intake box. The car drove fine. Finally I had my car painted, and when I drove my car it was fine, until a week later when I was driving it started to miss and pop. It wouldn't go past 3500 rpm.
I have done the following, replaced spark plugs and wires,checked fuel pressure-ok, vacuum, replaced throttle position sensor & adjusted, smoked tested for vacuum leaks-no leaks found, tested boost sensor-working fine, vacuum pump is running all the time-not sure if this is supposed to happen.
I have even grounded the engine and
I can't pull any engine codes, but I have pulled codes before; so I know that's working.
My instrument cluster is working, while driving my car will not go past 3500 rpm it will miss and backfire. While revving it up in neutral it will rev to 4500 rpm miss for a second then rev to redline. Some times after warming up it won't rev past 4000 in neutral.
7/14/2011 - We have checked for exhaust restriction, and with exhaust it is still missing. The fuel smells rich, and again at WOT it misses.
Any help would be greatly appreciated.
I've been looking on all the rx7 forums and I'm out of luck. Please help.
I have a 93 rx7 twin turbo completely stock. A new 13 b.
I have done the following, replaced spark plugs and wires,checked fuel pressure-ok, vaccum, replaced tps sensor & adjusted, smoked tested for vaccum leaks-no leaks found, tested boost sensor-working fine, vaccum pump is running all the time-not sure if this is supposed to happen.
I have even grounded the engine and everything else.
I can't pull any engine codes, but I have pulled codes before ; so I know that's working.
My instrument cluster is working, while driving my car will not go past 3500 rpm it will miss and backfire. While revving it up in neutral it will rev to 4500 rpm miss for a second then rev to redline. Some times after warming up it won't rev past 4000 in neutral.
message from ray:
Check for exhaust restriction, especially if it has the stock downpipe/pre-cat set up. Unbolt the exhaust
from the turbos, hold your ears, and see if the problem is fixed.
Thanks
Ray
I checked the exhaust for restriction, and it was fine.
ANYONE WITH ANY IDEAS?