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The spark plugs and wires are changed and a new thermostat

put in, now the car...
The spark plugs and wires are changed and a new thermostat put in, now the car surges and dies out when started
JA: How many miles are on the car? When did you last change the plugs?
Customer: 200,000
JA: What is the model/year of your Buick?
Customer: 2004 rendezvous
JA: Are you fixing your Rendezvous yourself? What have you tried so far?
Customer: Yes, I put a new map sensor on and cleaned the air throttle
JA: Anything else you want the mechanic to know before I connect you?
Customer: No I think that's it
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Answered in 1 minute by:
11/20/2017
Gary
Gary, Buick Technician
Category: Buick
Satisfied Customers: 17,360
Experience: 15 years master GM tech and mater ASE tech
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Welcome! My name is ***** ***** I will do my best to assist you with this problem.

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did you remove the throttle body to change the thermostat ?

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Customer reply replied 21 days ago
No I do not have a phone right now
Customer reply replied 21 days ago
Are we still texting?
Customer reply replied 21 days ago
What is going on?

it takes a bit to type back

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and it was not doing this before ?

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Customer reply replied 21 days ago
No

so it has to be something you touched

if the wires and plugs are good the odds are there is a vacuum leak from the thorttle body gasket causing this issue

be sure every thing is clean and tight on the throttlebody if so replace the throttle body gasket and see if it still does this

this has all the signs of a vacuum leak

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Gary
Gary, Buick Technician
Category: Buick
Satisfied Customers: 17,360
Experience: 15 years master GM tech and mater ASE tech
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Gary
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Category: Buick
Satisfied Customers: 17,360
17,360 Satisfied Customers
Experience: 15 years master GM tech and mater ASE tech

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