Slight Hesitation at idle only - Maserati Forum

 
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post #1 of 11 Old 07-05-2019, 06:07 PM Thread Starter
 
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Slight Hesitation at idle only

I know it can be a number of things but has anyone experienced this? Thanks
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post #2 of 11 Old 07-06-2019, 08:53 AM
 
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What engine do you have, what year? Does it happen all the time or only at cold?
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post #3 of 11 Old 07-07-2019, 12:36 AM
 
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Is it just a lumpiness or an actual hesitation? A real hesitation would almost certainly trigger a CEL.
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post #4 of 11 Old 07-07-2019, 04:35 PM Thread Starter
 
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Originally Posted by toshy View Post
What engine do you have, what year? Does it happen all the time or only at cold?
2014 quattroporte GTS v8. It doesn’t happen when cold. Only when the car is warm. I have an OBD Star X200 and it’s pulling code p129b
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post #5 of 11 Old 07-07-2019, 04:37 PM Thread Starter
 
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Originally Posted by alvav View Post
Is it just a lumpiness or an actual hesitation? A real hesitation would almost certainly trigger a CEL.
It’s very hard to tell because the car is no missing. I’m getting a DTC code p129b
It’s a 2014 quattroporte GTS
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post #6 of 11 Old 07-08-2019, 01:49 AM
 
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A free and easy check could be a quick clean on the MAF sensor. There are two separate sensors on the part, one of which heats up after startup. Might have some oil or dirt throwing off the sensors?


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post #7 of 11 Old 07-09-2019, 12:15 AM Thread Starter
 
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Originally Posted by endothrow View Post
A free and easy check could be a quick clean on the MAF sensor. There are two separate sensors on the part, one of which heats up after startup. Might have some oil or dirt throwing off the sensors?


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Thanks. I’ll try that tonight
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post #8 of 11 Old 07-09-2019, 12:21 AM
 
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Cleaning the MAFS is not going to fix a fault like that...You may have a small leak in your intercooler circuit or a sensor issue...It is gonna be pretty hard for a DIY to fix honestly....Jason

ASE Master Tech. 29 years experience
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post #9 of 11 Old 07-09-2019, 03:20 AM Thread Starter
 
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Originally Posted by [email protected] Enzo`s Atlanta View Post
Cleaning the MAFS is not going to fix a fault like that...You may have a small leak in your intercooler circuit or a sensor issue...It is gonna be pretty hard for a DIY to fix honestly....Jason
Do u recommend spray soapy water all over the motor and pressurize the system to find a leak?
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post #10 of 11 Old 07-09-2019, 03:44 AM
 
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I recommend you take it to a qualified repair shop.Trying to fix a twin turbo car maybe a stretch for a DIY...There is a lot going on....Jason

ASE Master Tech. 29 years experience
Ferrari, Maserati, Land Rover, & Jaguar technician.
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post #11 of 11 Old 07-10-2019, 06:10 AM

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It makes so much sense to spend $100K on a car and then try to fix it yourself using internet theories....

2005 Quattroporte
Fresno, CA
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