hey there guys,

my car is a 1993 R1 5 speed FD. Everything works fine, idles fine, nothing wrong with it when i first start the car( wont stall when i put into reverse)...but...when i take the car out and let it sit there for awhile, come back, start the car(still idles fine, and starts up right away no problem).... BUT when I shift into reverse, the RPM would drop and stall. anyone experience similar problem?? This really bothers me....any help would be appreciated....thanks.

 

anyone???

 

and the engine stall while my clutch is still all the way down.

 

Does it stall just like you turned off the key?

Does it stall after you have backed up and push in the clutch or just by sitting still and pushin in the clutch and putting it in reverse?

Do reverse lights work?

 

the rpm would slowly drops then stall

If i shift into reverse, with clutch all the way down, not backing it yet, the rpm would drop then stall

the reverse light works.

 

Do you have any modifications?

 

I have HKS downpipe and fujitsubo rm01a catback only....and a turbo timer.

 

everything else is stock

 

Same thing doesn't happen if you put it in 1st/2nd/3rd/4th/5th in those circumstances?

 

How many miles on the clutch? If I had to guess, there lies your problem... or with the release bearing.
But I'll let the experts step in.

 

I'd start by replacing the clutch switch. If that's not the problem it will be problem at some point.

 

Ahah, I bet it's your turbo timer unit / harness !

I have at least two friends with the same problems with their 180SX
Don't remember exactly why, but they were stalling in the same conditions !

 

nope nothing, everything works fine except the reverse.

 

the clutch are new, less than 1000 miles...

 

I see, I will replace the clutch switch and see if the problem is still exist.

 

really?? but how can a turbo timer contribute to the mechanic issue ?? should i just go ahead and take the turbo timer out?

 

Sounds more like an electrical issue relating to the reverse switch. Try unplug the reverse switch on the gearbox and see if the problem is still there. If not, I would say there is possibly a short in the wiring causing a massive current draw when the reverse switch is opened, or its saying something funny to the ECU.

 

something like having the reverse, 5th gear and or neutral switch wiring **** about?
methinks 5th gear and reverse wiring is mixed around

OP,, put the car in 5th gear and see if it activates your reverse lights

 

the ecu didnt show anything, everything is normal. but ill give it a try.

 

I will give that a try and report back.

 

thanks for all the help so far, i will report back once i found out whats the real cause of this.

 

I have the same problem, i mean my engine doesnt stall but it would rev up and down when i only put reverse in ( clutch still pressed ).

I will test it again when i put my engine back into the body.

 

Possibly. Im not to sure how the ECU (im assuming it is a factory ECU??) treats the idle with reguards to the state of the gearbox, but it could well have something to do with it. Unplugging the reverse switch will definitly tell you if you should be tracing an electrical issue, or if it is indeed a mechanical problem.

There are a lot of wires in a loom and if something stupid like a tyre has rubbed on the loom and caused a short, all manner of weird **** can happen.

You say that the car only stalls out when its warm...is that correct? so it will go into reverse when cold no problems at all?

Could you get a vid of the issue up on youtube or something?

 

it seems to be the turbo timer! because i turned the turbo timer off and the problem seems to go away.....i still need to double check tho