Idle and stall issue.
#1
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Idle and stall issue.
Hello I just bought my 1986 rx7 fc and when its cold and I start it it will die unless I hit the gas, I have to let it warm up for about 10-15 more or it will stall when I try to go anywhere. Even when Its fully warmed up the car will die when I shift into neutral. When I am starting in first gear I have to rev it to about 3k or it will stall too. I have cleaned the throttlebody twice now and it didnt make a difference. Please help!!!!
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#8
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You'll want to focus on the BAC, fast idle cam and the neutral switch. The FSM lists the ECU pinouts and it's always good to see how your ECU stacks up against the stated voltage values. You'll want to check the neutral switch ECU pin (1G Green/Black wire), as it should read below 1.5 volts w/key to on (transmission in neutral). Other gears it reads about 12 volts.
Link to FSM: Foxed.ca - Mazda RX-7 Manuals
Link to FSM: Foxed.ca - Mazda RX-7 Manuals
#14
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Your engine looks like it was raped. All of the colored plugs on the driver's side are for emissions and such. It also looks like the BAC (used to maintain idle) and the Air Bypassl valve has also been removed. And as already stated, if the fast idle cam is not operating properly, then the car will have a rough time starting w/the engine cold. And your secondary plates might be modded as well which can cause operating issues. At this point in time you should have already referred to the FSM to get a handle of your situation. The best section to start by far is the fuel and emissions section and it's not even close.
Last edited by satch; 08-08-15 at 09:14 AM.
#20
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with all that missing equipment, could be a combination of things. I know if the vacuum line to my Air Control Valve is disconnected my car will idle like crap. Your's is completely missing!
#21
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agreed, and i believe that to be the likely scenario.
Joshowen ~
like Satch was saying, you don't need to replace every single component, but the BAC is probably a good idea. it might serve you well during the time you will spend finding/replacing things to search for vacuum leaks that are probably there as well.
Joshowen ~
like Satch was saying, you don't need to replace every single component, but the BAC is probably a good idea. it might serve you well during the time you will spend finding/replacing things to search for vacuum leaks that are probably there as well.
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RotaryBobby
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09-10-15 01:33 PM