Rough first start in morning

[Athompson2629]

So this had been a recurring problem with my sonic. It's been going on for a weeks now close to a month. I replaced my intake tube because it was cracked like everyones been saying. So I replaced it and few days after the rough starting happened, just the first start of the day after that the car runs just fine. I checked and made sure the sensor and everything was plugged in and intact and is still doing it.

Any input would be appreciated and thanks in advance

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[Athompson2629]

Also my remote star won't work and I'm sure it's because of this issue with the motor or sensors. And there are no check engine lights

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[rojoes]

Check air filter

 

[spacedout]

If your remote start isn't working you have pending trouble codes that must not be triggering the CEL. Remote start is disabled if there is any codes.

Was there a CEL when your intake tube was leaking?

 

[rojoes]

So this had been a recurring problem with my sonic. It's been going on for a weeks now close to a month. I replaced my intake tube because it was cracked like everyones been saying. So I replaced it and few days after the rough starting happened, just the first start of the day after that the car runs just fine. I checked and made sure the sensor and everything was plugged in and intact and is still doing it.

Any input would be appreciated and thanks in advance

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As I was told and did....Start engine and let in run at least 5 minutes...Then drive it a few minutes...Next time it starts up check engine will be off. If not head to Autozone for a free scan
Codes P0171 it's the hose cracked

My thermostat (preheater) (whole thermostat assembly has to be replaced) failed about a week beore Intake hose and gave a code of P0597

 

[Athompson2629]

No codes at all and no CEL even before and after I replaced the intake tube. I know my CEL light works because it lights up when you turn the key on so... Idk what it could be with no codes showing

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[rojoes]

No codes at all and no CEL even before and after I replaced the intake tube. I know my CEL light works because it lights up when you turn the key on so... Idk what it could be with no codes showing

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Didn't the check engine light go on when the hose cracked? If it did there is a code if not scan (if you have engine code scanner) if not Autozone or Advance Auto does it for free...

 

[nickalltogether]

Or you can buy a bluetooth OBD2 dongle on Amazon for $15 and download an app to your phone and do it yourself.

 

[Athompson2629]

Even when the hose was cracked I didn't have a CEL light on at all and if there is no CEL does that mean there isn't any codes stored

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[nickalltogether]

The car can store pending and history codes without setting a light.

 

[Athompson2629]

OK can auto zone or orileys heck that even without the light

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[nickalltogether]

Yes.

 

[Athompson2629]

So I went to orileys and had them check and was not what I thought it was going to be. It showed 2 codes 8 times. A P0598 and P0597 something with the thermostat so I'm assuming I can replace the thermostat but what about the stored codes? Orileys said they couldn't clear because they said permanent

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[rojoes]

So I went to orileys and had them check and was not what I thought it was going to be. It showed 2 codes 8 times. A P0598 and P0597 something with the thermostat so I'm assuming I can replace the thermostat but what about the stored codes? Orileys said they couldn't clear because they said permanent

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They are not permanent but, Codes will erase automatically after 50 engine starts. That is it only hold codes for 50 starts. Check for warranty coverage of thermostat. if not it isn't that hard of a job. It's actually no problem to clear the code with a OBD II scanner. Another way of doing it (It will clear out everything along with your radio presets) unhook the battery for a half an hour...... If you don't need an inspection within the next 50 starts don't worry they will go away...You can also try to get another parts store to clear them.

 

[Athompson2629]

They are not permanent but, Codes will erase automatically after 50 engine starts. That is it only hold codes for 50 starts. Check for warranty coverage of thermostat. if not it isn't that hard of a job. It's actually no problem to clear the code with a OBD II scanner. Another way of doing it (It will clear out everything along with your radio presets) unhook the battery for a half an hour...... If you don't need an inspection within the next 50 starts don't worry they will go away...You can also try to get another parts store to clear them.

Do you know if this issue ties into a rough starting when first starting for the day? Sounds fuel and air but I didn't know if this thermostat problem is throwing off something else to cause it to Run weird for the first 15 seconds

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[Athompson2629]

Any input?

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[soupersonic]

My 2014 1.8 just started doing this after switching over to Costco gas. I always use 87 octane and have never had any problems. It was running like a Swiss watch before switching! I don't know what Costco is putting or not putting in their gas but I'm not buying it anymore. Now I have to take it to the dealer and let them mess it up because it's still under warranty. Thanks Costco! You get what you pay for obviously.

 

[soupersonic]

I might add, no CEL lights. 19k miles. Runs real rich for the first 5 seconds of a cold start. First start of the day.

 

[carsNskis]

Have you followed all the troubleshooting for the code? http://www.obd-codes.com/p0599

 

[carsNskis]

If you have done the troubleshooting, did you take it somewhere to have a mechanic look at it yet?

Auto parts stores are not reliable diagnostic centers. Your car is popping codes and starting rough, it's practically BEGGING you to have it looked at. Listen to your car!