No RPM Just idles while in gear brake light / battery on while makes loud noise when starting

PANDORA HUDGEN

MEMBER
2008 NISSAN QUEST
195,000 MILES

We drove 23 miles and stopped at our destination we put in park still running for a few minutes put in drive to pull off and van didn't want to move. Acted as if it where in neutral. Turned engine off and restarted pulled to stop sign same thing happened. Turned off air conditioning, radio and restarted engine drove fine 23 miles home with nothing on. After returning home left off for a couple hours and tried to start the engine battery/brake caution lights came on and it made a loud rattling noise the service engine light did not come on. We have recently put a new alternator, battery, new camshaft sensor and new power steering pump. What could cause this?

Sunday, June 7th, 2020 AT 4:13 PM

4 Replies

JACOBANDNICKOLAS

MECHANIC
110,089 POSTS

Hi,

I read through what has been done and what happened. However, at this point, I'm not clear. Is the vehicle starting? When you place it in gear, does it seem to be in neutral or does it go in gear and there is no throttle response?

Let me know. I'm asking because the title indicates no RPM and the post indicates it feels like it is in neutral.

Take care,
Joe

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Sunday, June 7th, 2020 AT 7:54 PM

PANDORA HUDGEN

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3 POSTS

It will rev up but not move like it is in neutral. And now it will start but it makes a loud noise and the brake/battery like shows on the dash. I haven’t tried to move it again.

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Monday, June 8th, 2020 AT 8:04 AM

PANDORA HUDGEN

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3 POSTS

The rpm gauge does not move, but the motor revs.

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Monday, June 8th, 2020 AT 8:28 AM

JACOBANDNICKOLAS

MECHANIC
110,089 POSTS

Hi,

The engine revs but the tachometer doesn't increase. That leads me to think there is a faulty crankshaft position sensor or a wiring issue related the engine control module. I'm not sure how that directly correlates with the transmission issue other than it is related to ECM.

If you look at the pic I attached, it shows that the crankshaft position sensor signals the ECM, which then signals the tachometer. It's done via CAN, which stands for computer area network. Since the CAN system is involved, you really should scan the can system Here is a video that explains it:

https://youtu.be/InIlnsjOVFA

Is it possible for you to record the noise you hear and upload it for me to hear?

Joe

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