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My VR4 running rich or wont start....Help
- Thread starterNabeel
- Start date
dmj
Well-known member
Maybe you should list what you have on your car and what mods you have.This would help a lot.
Hi'
My vr4 is runing very rich. I checked it. there is no leak. Logger show no error codes..
The current mod is.
1-3G MAS.
2-AFC Neo.(no correction setup yet).
3-AVC-R Boost controler.
4-Bigger intercooler & 2.5 piping.
5-Stock TD05 turbo.
6-JDM Engine (cyclone) with JDM ECU.
7-Wilpro 255 fuel pump.
8-AFPR with setting of 25psi
9-NGK plug wires.
Actually the car wont start some times & I have to disconnect the fuel pump to have it start again. It is not drivable.
--------------------------------------------------------------------------------
found in his referred to post.
My first couple of questions would be: Have you changed your fuel pressure back to stock yet? I know it was suggested in your other post, but you never mentioned if you did or not. Have you take out the 3g mas? ANd I see you suspected the ecu, have you tried a different ecu?
My vr4 is runing very rich. I checked it. there is no leak. Logger show no error codes..
The current mod is.
1-3G MAS.
2-AFC Neo.(no correction setup yet).
3-AVC-R Boost controler.
4-Bigger intercooler & 2.5 piping.
5-Stock TD05 turbo.
6-JDM Engine (cyclone) with JDM ECU.
7-Wilpro 255 fuel pump.
8-AFPR with setting of 25psi
9-NGK plug wires.
Actually the car wont start some times & I have to disconnect the fuel pump to have it start again. It is not drivable.
--------------------------------------------------------------------------------
found in his referred to post.
My first couple of questions would be: Have you changed your fuel pressure back to stock yet? I know it was suggested in your other post, but you never mentioned if you did or not. Have you take out the 3g mas? ANd I see you suspected the ecu, have you tried a different ecu?
1) Put the stock MAS back in, which I think you may have already done.
2) Put the base fuel pressure back up to 37psi (set with the HOSE OFF)
3) Bypass the AFC by connecting the Karman Hz wire from the MAS to the ECU back together, so it doesn't go through the AFC.
Let us know what happens.
2) Put the base fuel pressure back up to 37psi (set with the HOSE OFF)
3) Bypass the AFC by connecting the Karman Hz wire from the MAS to the ECU back together, so it doesn't go through the AFC.
Let us know what happens.
All done..
AFPR to 38.
No AFC direct MAF to ECU.
Original MAF.
Replace ECU & spark plugs.
Check the coil by closing the plugs to the car body & turn the engine.
Fuel pump is OK.
>>>>>>>>What els>>>>>>>Timing? Relay? What makes the engine not running or die in a minute?
AFPR to 38.
No AFC direct MAF to ECU.
Original MAF.
Replace ECU & spark plugs.
Check the coil by closing the plugs to the car body & turn the engine.
Fuel pump is OK.
>>>>>>>>What els>>>>>>>Timing? Relay? What makes the engine not running or die in a minute?
Check your reading from your coolant temp sensor (the one for the ECU)
might be bad or the wires might be broken/corroded.
might be bad or the wires might be broken/corroded.
BoostedAWD91
Well-known member
i would be almost sure its ur coolant temp sensor. same thing just happened to me. my temp sensor died and just flooded the car with fuel and soaked the plugs and wouldnt start. i replaced the sensor for $18 and fired right up.
advanced auto parts
part # wt3005
cross reference with the oem one. exact same one
advanced auto parts
part # wt3005
cross reference with the oem one. exact same one
It is the 2 wire sensor at the top of the T-stat housing.
Before you go and throw a CTS at it you should inspect the wiring. Or if you know anyone with an actual scan tool have them look at what the ECU is seeing for coolant temp.
Before you go and throw a CTS at it you should inspect the wiring. Or if you know anyone with an actual scan tool have them look at what the ECU is seeing for coolant temp.
the top sensor on the tstat is for the AC the temp sensors are the ones on the back side.. I forgot if it was the top or bottom one.
Thanks'
That is helping me. I don't know any body have scan tool. I have palm my self. But I don't know how to check the reading of the coolant sensor. I will replace it if it's cheap. By the way the palm is keep throwing code 25 (Barometer). I keep replacing the MAS. I have two of 1G mas. But the code goes away when I tried the 3G Mas. Does this code come from swaping the 2 wires at the ECU pin#6 & 14?
That is helping me. I don't know any body have scan tool. I have palm my self. But I don't know how to check the reading of the coolant sensor. I will replace it if it's cheap. By the way the palm is keep throwing code 25 (Barometer). I keep replacing the MAS. I have two of 1G mas. But the code goes away when I tried the 3G Mas. Does this code come from swaping the 2 wires at the ECU pin#6 & 14?
No, the BARO signal is not on pin #6 or #14, it is on pin #16.
The CTS is around $35 at autozone.
