anyone else having super rough start in cold

[azn_fcuk]

Hey guys just like the title says, has anyone else experience very rough start for the first 30-45 secs when car is sub-zero conditions?

Been experiencing very rough idle almost stalling out during the first 20 secs the car is started then it revs up to try an smooth out the very low idle, take about 30-45 secs before the it idles normal.
Seems to only happen when temperatures are bellow -5 that we've had this week.

I'm not refereeing to the rough sounding cold start either lol, this is really the car bogging down.

[Gearhead999s]

Originally Posted by azn_fcuk

Hey guys just like the title says, has anyone else experience very rough start for the first 30-45 secs when car is sub-zero conditions?

Been experiencing very rough idle almost stalling out during the first 20 secs the car is started then it revs up to try an smooth out the very low idle, take about 30-45 secs before the it idles normal.
Seems to only happen when temperatures are bellow -5 that we've had this week.

I'm not refereeing to the rough sounding cold start either lol, this is really the car bogging down.

What fuel are you using?If I use a fuel with ethanol my car will do that till it gets some heat and also buck sometimes under light loads at low revs.It does not do it on Shell which is ethanol free.

[redfox]

Originally Posted by azn_fcuk

Hey guys just like the title says, has anyone else experience very rough start for the first 30-45 secs when car is sub-zero conditions?

Been experiencing very rough idle almost stalling out during the first 20 secs the car is started then it revs up to try an smooth out the very low idle, take about 30-45 secs before the it idles normal.
Seems to only happen when temperatures are bellow -5 that we've had this week.

I'm not refereeing to the rough sounding cold start either lol, this is really the car bogging down.

If your car is stock, ECU should adapt after a few starts. AFR is off due to the cold air. Please let us know after a few days if that goes away.

[azn_fcuk]

Originally Posted by Gearhead999s

What fuel are you using?If I use a fuel with ethanol my car will do that till it gets some heat and also buck sometimes under light loads at low revs.It does not do it on Shell which is ethanol free.

I'm running Husky 94 which has some eth in it close to e10...

Havent ran anything other than Husky how do you like the Shell?

[azn_fcuk]

Originally Posted by redfox

If your car is stock, ECU should adapt after a few starts. AFR is off due to the cold air. Please let us know after a few days if that goes away.

thanks Redfox,
car is JB4 map 1 with intakes.
Since its been sub zero this week its been ugly to start. Once it kept surging until I hit the throttle.

Ill let you know if it persists after this week.

[Gearhead999s]

Originally Posted by azn_fcuk

I'm running Husky 94 which has some eth in it close to e10...

Havent ran anything other than Husky how do you like the Shell?

That is what I run most of the time as it does give me slightly better fuel mileage than an ethanol fuel.No issues using it even on track that I can notice even though it is only a 91.

[azn_fcuk]

Originally Posted by Gearhead999s

That is what I run most of the time as it does give me slightly better fuel mileage than an ethanol fuel.No issues using it even on track that I can notice even though it is only a 91.

are you modded? was running the Husky only because of the Meth but its hard to find a Husky station all of the time...

[redfox]

Originally Posted by azn_fcuk

thanks Redfox,
car is JB4 map 1 with intakes.
Since its been sub zero this week its been ugly to start. Once it kept surging until I hit the throttle.

Ill let you know if it persists after this week.

It's the intake. Known issue. Throws ECU off and ECU can't adapt to it. I bet you if you take the intake off, your problem will disappear. Apparently, more common with short stack intakes. I have intake as well, but basically factory path. ECU adapted after two starts and issue never came back.

Im running Petro 94, which has ethanol. No issues like many others.

[azn_fcuk]

Originally Posted by redfox

It's the intake. Known issue. Throws ECU off and ECU can't adapt to it. I bet you if you take the intake off, your problem will disappear. Apparently, more common with short stack intakes. I have intake as well, but basically factory path. ECU adapted after two starts and issue never came back.

Im running Petro 94, which has ethanol. No issues like many others.

Thank you for the feedback.
What do you mean by factory path? I'm running the bms intakes

[sunnyboy]

Originally Posted by redfox

It's the intake. Known issue. Throws ECU off and ECU can't adapt to it. I bet you if you take the intake off, your problem will disappear. Apparently, more common with short stack intakes. I have intake as well, but basically factory path. ECU adapted after two starts and issue never came back.

Im running Petro 94, which has ethanol. No issues like many others.

+1 (less the mods)

I also run Petro 94. All through last winter, car ran great. Haven't hit the sub-zero weather here in GTA yet, so hopefully *finger's cross* it will continue to run great.

[redfox]

Originally Posted by azn_fcuk

Thank you for the feedback.
What do you mean by factory path? I'm running the bms intakes

BMS intakes are not cold air intakes. They take air from the engine bay. Mine are "long stack", as they they are cold air intakes that take air from before the radiator, which is what the factory air intake does. Hence, technically, BMS intakes are less effective than factory intakes under heavy load. That said, they sound way better.

[Gearhead999s]

Originally Posted by azn_fcuk

are you modded? was running the Husky only because of the Meth but its hard to find a Husky station all of the time...

100% stock!

[myzmak]

Also run ethanol free (either Shell or Co-op) and have not had this issue at all either last winter or in the last week (when the sub zero has returned to YYC)

[E92LNGCGY]

Originally Posted by azn_fcuk

thanks Redfox,
car is JB4 map 1 with intakes.
Since its been sub zero this week its been ugly to start. Once it kept surging until I hit the throttle.

Ill let you know if it persists after this week.

Definitely intake screwing with the ECU. I have BMS intake with JB4 and DP and I have the same experience.

[azn_fcuk]

Originally Posted by E92LNGCGY

Definitely intake screwing with the ECU. I have BMS intake with JB4 and DP and I have the same experience.

Thanks for the feedback.... ill message BMS and ask them what they recommend.

Thanks, we should get a meet going one of these days

[E92LNGCGY]

Originally Posted by azn_fcuk

Thanks for the feedback.... ill message BMS and ask them what they recommend.

Thanks, we should get a meet going one of these days

Make sure all the senors are connected tight. I double checked but it is still doing it. Not sure what's going on. I don't think it will damage anything.

I parked mine for winter. We could do one in spring.

[gonoyaro11]

Never. Not even once

[01ON19]

Originally Posted by basara078

Never. Not even once

Same with me. Was fine all last winter even when -20C for quite a while. I use Shell 91. Car is 100% stock.

[E92LNGCGY]

Adding further to this thread. I started it this weekend and the car actually stalled (6MT). Started again and was fine but still that crazy idle.

[azn_fcuk]

Originally Posted by E92LNGCGY

Adding further to this thread. I started it this weekend and the car actually stalled (6MT). Started again and was fine but still that crazy idle.

I checked the maf sensor on in the intake, I noticed it wasnt seating properly and part of the rubber grommet was squished and the sensor was at a bit of an angle this was on both pipes.

I removed them and adjusted the rubber and made sure it was flat on the pipe before screwing them back in.
Today was a good test as it was colder out and it seemed to be ok......gulp

[E92LNGCGY]

Originally Posted by azn_fcuk

I checked the maf sensor on in the intake, I noticed it wasnt seating properly and part of the rubber grommet was squished and the sensor was at a bit of an angle this was on both pipes.

I removed them and adjusted the rubber and made sure it was flat on the pipe before screwing them back in.
Today was a good test as it was colder out and it seemed to be ok......gulp

Awesome good to hear. I will probably adjust it by spring. Just a bit cold now.