Fuel pump

TOADBOY1

MEMBER
1991 BUICK REGAL
3.8L
AUTOMATIC
10,125 MILES

When I drive my car for a long period of time. Then instantly when I come to a stop light the car dies. Then I started back up it startles and putt, putt and I smell gas. So I let it sit for a bout 1 minute and then it runs smooth again.

Friday, January 1st, 2016 AT 4:52 PM

8 Replies

HMAC300

MECHANIC
48,601 POSTS

Try cleaning throttle plate on both sides and iac hole with choke cleaner if it continues check fuel pressure 41-47 psi

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Saturday, January 2nd, 2016 AT 6:27 AM

TOADBOY1

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5 POSTS

Okay

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Saturday, January 2nd, 2016 AT 8:17 AM

TOADBOY1

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5 POSTS

I got a diagnostic and they said it's the mass flow sensor. They said 282.00 dollars to fix it is it possible to do it myself.

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Saturday, January 2nd, 2016 AT 6:09 PM

HMAC300

MECHANIC
48,601 POSTS

Yes that is the part between the air filter and engine, two clamps to remove it and unplug it. Pic is what it looks like It may be in air cleaner this is for a 3.1L engine

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Sunday, January 3rd, 2016 AT 7:50 AM

TOADBOY1

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5 POSTS

I change it. My car is still doing the same thing when I turn the car on and unplug the mass airflow sensor connector the car immediately shuts off and won't start. I read in another post that if it does that than its not the mass airflow sensor it's something else. Any help please

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Monday, January 4th, 2016 AT 8:49 PM

HMAC300

MECHANIC
48,601 POSTS

Your check engine light will stay on until you pull the ecm fuse for 30 seconds to reset it make sure key is on. Then try it and do what I said in first reply.

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Tuesday, January 5th, 2016 AT 6:25 AM

TOADBOY1