ok... i searched around and culdent find anything that helped me at all.
RB25DET in a 1990 240sx:
the car runs fine, when i first start driveing, then after a little while it will start wanting to stall out when i come to a stop. most of the time i have to slow all the way down to about 1000rpm and then press the clutch in to keep it from stalling. another thing is after driveing for a while if i sit somwhere the RPM's will raise and drop repeatedly untill it eventually drops low enuf to kill the engine. another thing is if im in traffic and moveing slowly i have to get the rpms at least to 1500 to keep it from stalling when i slow down. im relly not sure why it is doing this but any help you guys culd give me wuld be very much appreciated. hope i put enuf info in for you guys. let me know if you need to know anything else.
if this has been coverd before, im very sorry, i must ave missed it, please just post the link and hopefully it will help.
thank you in advance.
-March
stalling under brakeing only when hot
Re: stalling under brakeing only when hot (March)
Are you venting your BOV?
Re: stalling under brakeing only when hot (dsm)
i have the stock recirc valve on there.
-
USMCgetsome
- Posts: 2030
- Joined: Wed Apr 14, 2004 7:38 pm
- Car: OWN S13.5 RB25DET/2003 G35
- Contact:
Re: stalling under brakeing only when hot (March)
got a crappy idle as well? i had a bad ecu and maf. Changed em both and i'm steady as a rock.
Re: stalling under brakeing only when hot (KUILLIN_DRIFTER)
i checked my maf and it seems to be fine... the only thing i have not done is swap it with another to see if it changes anything. im not sure how to check if the ecu is good or not. i checked all my hoses ect... so i know they are all good. if you culd tell me how to check an ecu that wuld be great.
thanks for the help.
-March
thanks for the help.
-March
Re: stalling under brakeing only when hot (March)
Turn your ECU around and watch the red light for a trouble code. If it blinks 5 times then pause and another 5 times then your good. I cant remember where I found the trouble code sheet but I bet its on here somewhere. Just turn your key to the on position and watch for the light. Ill try and find the sheet for you...
Re: stalling under brakeing only when hot (zdrifter)
Also your O2 sensor could be bad, Most trouble codes for cars are for the O2 sensor because of a bad air/fuel mixture so it tells the ECU to go rich or go lean, you could be flooding your engine. There is a lot of things that could be going wrong right now. You checked all your vaccum lines aswell right?? Also intercooler piping... Here is the trouble code sheet for you hope this helps you out..
How to check for fault codes.
The ECU has a window on one side to view a red LED and a green LED - when checking fault codes, a red flash is worth 10, and a green flash is worth 1. So for example, the code to say that everything is functioning normally would be 5 red flashes and 5 green flashes - the code is 55.
The ECU has 5 modes of operation, for diagnostics codes, it has to be set to mode 3.
1. Make sure the screw next to the viewing window is turned clockwise.2. Turn the ignition on3. Both LEDs with flash once, then a pause, then a second time, then a pause, etc. etc. up to 5 times then will repeat the process. After is has flashed 3 times then turn the screw completely anti-clockwise. - this will select mode 3.4. The LEDs will now flash codes. 55 means that everything is normal. The rest are written below.5. When finished, turn the screw back to clockwise and the ECU will reset itself automatically.
Don't worry about the '5th cylinder misfire' and '6th cylinder misfire' or anything, the codes are the same for all Nissans.
11 Crank Angle Sensor/Camshaft Position Sensor.
12 Air Flow Meter/Mass Air Flow Sensor.
13 Engine Coolant Temperature Sensor.
14 Vehicle Speed Sensor.
21 Ignition Signal.
22 Fuel Pump.
23 Idle Switch.
24 Throttle Valve Switch.
25 Idle Speed Control Valve.
28 Cooling Fan Circuit.
31 ECM.
32 EGR Function.
33 Heated Oxygen Sensor.
34 Knock Sensor.
35 Exhaust Gas Temperature Sensor.
36 EGR Control-Back Pressure Transducer.
37 Knock Sensor.
38 Right hand bank Closed Loop (B2).
41 Intake Air Temperature Sensor.
42 Fuel Temperature Sensor.
43 Throttle Position Sensor.
45 Injector Leak.
47 Crankshaft Position Sensor.
51 Injector Circuit.
53 Oxygen Sensor.
54 A/T Control.
55 No Malfunction.
63 No. 6 Cylinder Misfire.
64 No. 5 Cylinder Misfire.
65 No. 4 Cylinder Misfire.
66 No. 3 Cylinder Misfire.
67 No. 2 Cylinder Misfire.
68 No. 1 Cylinder Misfire.
71 Random Misfire.
72 TWC Function right hand bank.
73 TWC Function right hand bank.
76 Fuel Injection System Function right hand bank.
77 Rear Heated Oxygen Sensor Circuit.
82 Crankshaft Position Sensor.
84 A/T Diagnosis Communication Line.
85 VTC Solenoid Valve Circuit.
86 Fuel Injection System Function right hand bank.
87 Canister Control Solenoid Valve Circuit.
91 Front Heated Oxygen Sensor Heater Circuit right hand bank.
94 TCC Solenoid Valve.
95 Crankshaft Position Sensor.
98 Engine Coolant Temperature Sensor.
101 Front Heated Oxygen Sensor Heater Circuit right hand bank.
103 Park/Neutral Position Switch Circuit.
105 EGR and EGR Canister Control Solenoid Valve Circuit.
108 Canister Purge Control Valve Circuit
How to check for fault codes.
The ECU has a window on one side to view a red LED and a green LED - when checking fault codes, a red flash is worth 10, and a green flash is worth 1. So for example, the code to say that everything is functioning normally would be 5 red flashes and 5 green flashes - the code is 55.
The ECU has 5 modes of operation, for diagnostics codes, it has to be set to mode 3.
1. Make sure the screw next to the viewing window is turned clockwise.2. Turn the ignition on3. Both LEDs with flash once, then a pause, then a second time, then a pause, etc. etc. up to 5 times then will repeat the process. After is has flashed 3 times then turn the screw completely anti-clockwise. - this will select mode 3.4. The LEDs will now flash codes. 55 means that everything is normal. The rest are written below.5. When finished, turn the screw back to clockwise and the ECU will reset itself automatically.
Don't worry about the '5th cylinder misfire' and '6th cylinder misfire' or anything, the codes are the same for all Nissans.
11 Crank Angle Sensor/Camshaft Position Sensor.
12 Air Flow Meter/Mass Air Flow Sensor.
13 Engine Coolant Temperature Sensor.
14 Vehicle Speed Sensor.
21 Ignition Signal.
22 Fuel Pump.
23 Idle Switch.
24 Throttle Valve Switch.
25 Idle Speed Control Valve.
28 Cooling Fan Circuit.
31 ECM.
32 EGR Function.
33 Heated Oxygen Sensor.
34 Knock Sensor.
35 Exhaust Gas Temperature Sensor.
36 EGR Control-Back Pressure Transducer.
37 Knock Sensor.
38 Right hand bank Closed Loop (B2).
41 Intake Air Temperature Sensor.
42 Fuel Temperature Sensor.
43 Throttle Position Sensor.
45 Injector Leak.
47 Crankshaft Position Sensor.
51 Injector Circuit.
53 Oxygen Sensor.
54 A/T Control.
55 No Malfunction.
63 No. 6 Cylinder Misfire.
64 No. 5 Cylinder Misfire.
65 No. 4 Cylinder Misfire.
66 No. 3 Cylinder Misfire.
67 No. 2 Cylinder Misfire.
68 No. 1 Cylinder Misfire.
71 Random Misfire.
72 TWC Function right hand bank.
73 TWC Function right hand bank.
76 Fuel Injection System Function right hand bank.
77 Rear Heated Oxygen Sensor Circuit.
82 Crankshaft Position Sensor.
84 A/T Diagnosis Communication Line.
85 VTC Solenoid Valve Circuit.
86 Fuel Injection System Function right hand bank.
87 Canister Control Solenoid Valve Circuit.
91 Front Heated Oxygen Sensor Heater Circuit right hand bank.
94 TCC Solenoid Valve.
95 Crankshaft Position Sensor.
98 Engine Coolant Temperature Sensor.
101 Front Heated Oxygen Sensor Heater Circuit right hand bank.
103 Park/Neutral Position Switch Circuit.
105 EGR and EGR Canister Control Solenoid Valve Circuit.
108 Canister Purge Control Valve Circuit
Re: stalling under brakeing only when hot (zdrifter)
awsome... thank you very much. i was just looking for that info. ill check it today after i get off work and let you guys know what it says. also yes i have checked my intercooler pipeing and all lines and they are fine, nothing is loose or anything like that so... hopefully this will tell me something.
thanks again
-March
thanks again
-March