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2005 Buick Terraza Doesn't cold start

Tiny
OHIO28
  • MEMBER
  • 2005 BUICK TERRAZA
Engine Performance problem
2005 Buick Terraza 6 cyl Front Wheel Drive Automatic 106K miles

The van when starting it up doesn't start without giving it gas. Without giving it gas while trying to start, the engine turns over, starts, then cuts right off.

But when starting and giving the engine gas, the van starts right up, but has a rough RPM idle for a bit. After let'n it run for some time, the van has no problem. This issue has existed for I'd say a little over 6-months.

In looking up the possible parts that might be causing this issue, this van doesn't have a Fuel Pressure Regulator listed.

2-Car Pro's help once again. What are the top possible issues that cause this.

OHIO28.
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Tuesday, October 19th, 2010 AT 1:56 AM

8 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi Ohio28,

Here are possible causes for hard starting.


https://www.2carpros.com/forum/automotive_pictures/192750_HardStart01a_1.jpg



https://www.2carpros.com/forum/automotive_pictures/192750_HardStart01b_1.jpg



https://www.2carpros.com/forum/automotive_pictures/192750_HardStart01c_1.jpg

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Tuesday, October 19th, 2010 AT 8:28 AM
Tiny
OHIO28
  • MEMBER
  • 16 POSTS
Again thank you. I will walk down the list to find the possible cause of this issue. Will def let you know what I come up with

OHIO28.
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Tuesday, October 19th, 2010 AT 11:37 AM
Tiny
OHIO28
  • MEMBER
  • 16 POSTS
Ok, how do you test the current Mass Air Flow sensor? What are the steps and do you also have them in PDF format?

Again thanks much KEN.

OHIO28.
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Tuesday, October 19th, 2010 AT 11:58 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
I will send the file to you. Hope they are helpful.
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Tuesday, October 19th, 2010 AT 4:08 PM
Tiny
OHIO28
  • MEMBER
  • 16 POSTS
Thank you again and I have downloaded the helpful information and preformed the checks. But what I would like to add was I pulled the MAF Sensor and cleaned it with some Gummount Carb Cleaner as if I were spraying the jet in a carb (Like 1/2 a can). The problem has gone away. The car cold starts, maintains a consistent idle, and even seems to run better.

Thanks again.

OHIO28. Browns did the Saints bad today.
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Sunday, October 24th, 2010 AT 11:33 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Glad to know you have fixed the problem.

Yes, a dirty MAF can cause inaccurate signals resultng in starting and running problems.

Thank you for using 2carpros and have a nice day.
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+1
Monday, October 25th, 2010 AT 7:36 AM
Tiny
TANGELA YOUNG
  • MEMBER
  • 1 POST
I am having the same exact problem. Please tell me what to do to fix it. My van only starts when I give it gas. Then its fine
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Thursday, March 21st, 2019 AT 4:47 PM
Tiny
JOETECHPRO
  • MECHANIC
  • 705 POSTS
Hey TANGELA YOUNG,

Please start a new question with a description of the fault you are experiencing.

We try and keep each persons questions separate so people can easily follow the thread after it is complete.

Regards, Joe
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Monday, March 25th, 2019 AT 9:11 AM

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