Poor acceleration from a stop

MARK1967

MEMBER
1991 SATURN SEDAN
4 CYL
FWD
AUTOMATIC

I just replaced the thermostat on my 91 saturn, however since I replaced it, my car now hesitates when giving it gas from a stop position. What could cause this all of a sudden?

Friday, February 25th, 2011 AT 7:03 PM

5 Replies

SATURNTECH9

MECHANIC
30,870 POSTS

Replacing the thermostat shouldn't cause the car to hesitate is it worse with the a/c on?Any code's?

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Friday, February 25th, 2011 AT 7:08 PM

MARK1967

MEMBER
3 POSTS

The ac does not work. I'm wondering could it be a bad plug wire? I don't think the check engine light is on. My wife drives the car and she'll be home soon. It is just coincidence after changing the thermostat that this problem came out of nowhere. Could it also be a sensor going out? Thank you for responding so quickly.

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Friday, February 25th, 2011 AT 7:17 PM

SATURNTECH9

MECHANIC
30,870 POSTS

The coolant temp sensor's goes bad pretty often on those car's it would be the bottom one with two wire's going to it a black wire and a yellow wire. It's screwed into your head right below where your upper hose goes on. There only 10 also inspect the connector going to it if it's corroded you would have to replace the connector too. Also you could have bad spark plug's and wire's I would inspect those too. Also where your spark plug wire's go on to the coil check those coil tower's they get corroded and cause problem's. Let me know what you find.

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Friday, February 25th, 2011 AT 7:26 PM

MARK1967