New engine installed; it shuts off 30 seconds after starting?

GEORGETTE BLANK

MEMBER
1999 TOYOTA CAMRY
2.2L
4 CYL
2WD
AUTOMATIC
125,340 MILES

So, the motor blew got a new motor put in now the mechanic said car starts up fine everything is working as needed, but then he says it shuts off after 30 seconds with no warning. He thinks it's electrical or may need a new computer. Could it be the throttle body plugs being in backwards?

7 Replies

JACOBANDNICKOLAS

MECHANIC
108,328 POSTS

Hi,

If the computer was okay prior, that isn't a likely cause.

When it stalls, does it start right back up? Also, has he checked to see if there are diagnostic trouble codes that may help direct us?

My first thought is a faulty crankshaft position sensor. Take a look through this link and let me know if it mirrors what has been described to you:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Let me know.

Joe

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Sunday, January 29th, 2023 AT 2:40 PM

GEORGETTE BLANK

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Yes, it starts right back up. I was thinking maybe the engine control module. It is supposed to be towed in the morning to a different place that deals with Toyota. Also thinking they may have put the plugs in the wrong spot on the throttle body maybe they have the air one in the fuel plug and the fuel plug in the air, could that make it shut off?

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Sunday, January 29th, 2023 AT 5:20 PM

JACOBANDNICKOLAS

MECHANIC
108,328 POSTS

Hi,

Wow, I hope that isn't the case. LOL When it stalls, does it act like someone simply turned the key off or more like it is slowly turning off?

Also, did you have a chance to check the link related to the crankshaft position sensor I attached above?

Let me know.

Take care,

Joe

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Monday, January 30th, 2023 AT 3:50 PM

GEORGETTE BLANK

MEMBER
4 POSTS

No, I didn't but I will. And when it shuts off it's like someone turned the key off. We bought a new crankshaft position sensor today. They are going to put it in on Thursday or Friday.

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Monday, January 30th, 2023 AT 5:51 PM

JACOBANDNICKOLAS

MECHANIC
108,328 POSTS

Hi,

Thank you for the update. I hope that takes care of the issue. Here is a link (if needed) that explains in general how one is replaced:

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Also, I attached the directions specific to your vehicle below. It is a little bit of a pain because you need to remove the timing belt cover to access it.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.

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