Mass airflow sensor MAF

CHANNING BLAIR

MEMBER
1996 NISSAN ALTIMA
2.4L
4 CYL
FWD
MANUAL
180,000 MILES

Will not start anymore. The last time it started four months ago it idled erratically and shook and shut off when you give it gas. It has not started since. Fuel pump is good. I am short on cash so I need a solid answer before I replace.

Wednesday, March 1st, 2017 AT 1:03 AM

5 Replies

MHPAUTOS

MECHANIC
31,937 POSTS

You must do the diagnostics first, you need to prove fuel pressure is correct, injection pulse and spark are okay and check for any codes. And with the symptoms you have also any vacuum leaks, you need to do these steps first.

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Wednesday, March 1st, 2017 AT 1:15 AM

CHANNING BLAIR

MEMBER
3 POSTS

Mechanics said its all good, Throwing o2 sensor codes and camshaft.

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Wednesday, March 1st, 2017 AT 2:15 AM

MHPAUTOS

MECHANIC
31,937 POSTS

Cam shaft position sensor?

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Wednesday, March 1st, 2017 AT 3:18 AM

CHANNING BLAIR

MEMBER
3 POSTS

According to all auto parts stores my car does not have one nor has it ever.

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Wednesday, March 1st, 2017 AT 6:02 AM

KEN L

MASTER CERTIFIED MECHANIC
42,973 POSTS

Hey CHANNING,

I would start with the code numbers maybe he is getting mixed up with a crankshaft sensor, Next I would do a compression test to see if there is an internal problem with the engine before you go dumping money into it.

Here are some guide that will help you get started.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://www.2carpros.com/articles/how-to-test-engine-compression

Please run some tests and get back to us so we can continue helping you.

Best, Ken