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Jay
Jay, Nissan Technician
Category: Nissan
Satisfied Customers: 18724
Experience:  20+yrs experience with Nissan & Infiniti Trained & Certified.Currently still working for Dealer
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It does not want to start. It started fine in the morning

Customer Question

It does not want to start. It started fine in the morning when it was cold. As it was warming up the engine started acting up.
JA: Have you checked the battery, particularly the terminal connections? Are they corroded?
Customer: Let's go further than that. The engine turns and it tries to start. When it does, stays at 450 RPM then dies few seconds later
JA: What is the model/year of your Nissan?
Customer: 99 Quest GLE
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Replaced MASS AIR FLOW sensor and DISTRIBUTOR
JA: Anything else you think the mechanic should know?
Customer: There is fuel delivery
Submitted: 3 months ago.
Category: Nissan
Expert:  Jay replied 3 months ago.

Hello my name is ***** ***** thank you for your question.

Do you have any codes?

Customer: replied 3 months ago.
No codes at all
Expert:  Jay replied 3 months ago.

Does the distributor Rotor spin when the engine is turning over? Did you check that?

Customer: replied 3 months ago.
sometimes the engine starts and stays at 450 RPM for under one minute
Expert:  Jay replied 3 months ago.

That almost sounds like a fuel issue. Did you try checking fuel pressure?

Customer: replied 3 months ago.
I disconnected the fuel line after the fuel filter and the pump is running and pumping. I do not have a pressure gauge though. But I barely held the pressure with my thumb on the rubber hose.
Expert:  Jay replied 3 months ago.

Well these Quests run 36 psi of fuel pressure. If the pressure is lets say 25 PSI, that could seem like enough, but it's not. It can certainly make it run as you are describing for the short period of time.

You have spark correct?

Customer: replied 3 months ago.
ignition is okay. The car was running good until the engine stalled yesterday. This morning we started the engine as normal. As the engine was warming up it started the hesitate. Now, it is totally not wanting to run well. We checked each cylinder compression and they are 180-180-180-190-180-190 psig. Based on the conditions and other forums, we replaced the distributor and MAF sensor. Problem is the same. I also lean to fuel problem but I would like to have a better check. The gas tank is full and it will be hard to drop to replace the pump, which I already have at hand from an old purchase.
Customer: replied 3 months ago.
If the pump fails either running/not running, then the pump is good because it runs well when it should. If the pump can run and fail with low pressure, then it is still a possibility until I can find a way to measure the pressure and confirm
Expert:  Jay replied 3 months ago.

If the pump runs, you can check fuel pressure by adding a gauge inline to see what kind of fuel pressure you have...

Customer: replied 3 months ago.
I will see what I can do, I will have to run to AZ to get what I need
Customer: replied 3 months ago.
How long is this $20 consult good for?
Expert:  Jay replied 3 months ago.

I can keep this question open until you are satisfied.

Customer: replied 3 months ago.
Okay, let me find the way to measure that fuel pressure and I will get back to you
Expert:  Jay replied 3 months ago.

You got it.

Talk to you soon

Customer: replied 3 months ago.
Jay, are you still there?
Expert:  Jay replied 3 months ago.

Yes

Customer: replied 3 months ago.
The fuel pressure is 32 psig when the pump starts. Then goes up to 40 psig when the engine is cranked up. I measured the pressure in-line after the fuel filter under the car.
Expert:  Jay replied 3 months ago.

Then the only other thing is to check the timing belt and see if it jumped.

Customer: replied 3 months ago.
I do not think so because the engine ran 100% good this morning as normal up to warm temperature when started to act-up. Also, the belt was replaced about 20K miles ago along with new tensioner.
Expert:  Jay replied 3 months ago.

That could be a MAF sensor. After Market ones never tend to work right. But it's hard to determine when the van doesn't run properly. Especially when you have no codes. Also make sure you installed the distributor properly and your not a tooth off as well.

Customer: replied 3 months ago.
I am sure the distributor is well installed. If the MAF is the culprit, What are you saying is I need to get the original HITACHI and the DURALAST is crappy?
Customer: replied 3 months ago.
Is there anything I can check in the ECM?
Expert:  Jay replied 3 months ago.

Duralast never lasts. All after market electrical parts I have dealt with and encountered never work properly out of the box. Nissan's are that sensitive to them.

If you have no codes, compression is good. Basic Fuel and spark are there. The only thing to check is timing and air and fuel mixture. If to lean or to rich it won't allow the engine to run.

Customer: replied 3 months ago.
I will try to get the original part tomorrow. I will keep you posted
Expert:  Jay replied 3 months ago.

Ok.. Let me know

Customer: replied 3 months ago.
I have not been able to attain the original part. It had to be special order.
Expert:  Jay replied 3 months ago.

ok

Customer: replied 3 months ago.
The original MAF comes in this Saturday.
Expert:  Jay replied 3 months ago.

Ok.. Let me know how you make out

Customer: replied 3 months ago.
Replaced MAF with original HITACHI part and the engine cranks up but does not start. Same problem as before.
Expert:  Jay replied 3 months ago.

Did you recheck to see if there was any codes?

Customer: replied 3 months ago.
No codes at all, but the scanner communicates with the ECM
Expert:  Jay replied 3 months ago.

Did you check the EGR?

Customer: replied 3 months ago.
What about the EGR? What do I need to check on that one?
Expert:  Jay replied 3 months ago.

See if the diaphragm is torn or something.

Customer: replied 3 months ago.
diaphragm of EGR is good, EGR holds vacuum and lifts
Expert:  Jay replied 3 months ago.

Is the exhaust clear? If restricted it won't allow the engine to run also..

Customer: replied 3 months ago.
exhaust is clear.
Customer: replied 3 months ago.
I am now leaning toward ECM failure, do you agree or do you have something else to check?
Expert:  Jay replied 3 months ago.

It is possible. But will require it to be checked to determine that

Customer: replied 3 months ago.
Are there any checks for me to do in the ECM to confirm?
Expert:  Jay replied 3 months ago.

Need to go through each pin at the Ecm to determine if it's bad

Customer: replied 3 months ago.
OK ... I will start that troubleshooting tomorrow.
Expert:  Jay replied 3 months ago.

You got it. I normally print it out and bring it to the car and make notes on it as I go. But I go through all pins and then recheck all my readings later and then determine what is the issue.

Customer: replied 3 months ago.
What is your recommendation for the ECM, get it repaired, get it from junk yard, or get one remanufactured? If get it repaired, any recommendations on where to send it? If remanufactured, where to purchase it from? If junk yard, where to get it reprogrammed?
Expert:  Jay replied 3 months ago.

I would see if you can find a junk yard one first before repairing the Ecm.