Acura MDX SUV Forums banner
1 - 5 of 5 Posts

·
Registered
Joined
·
4 Posts
Discussion Starter · #1 ·
Hello,
I have a 2001 MDX and have recently been experiencing intermittent starting problems. There are times when it will crank but not start and then a few minutes later, it will start as if there is no problem. This generally happens after the vehicle has been driven a short distance and then shut off for 5 or 10 minutes. The battery is just a few months old and has been checked on a couple of occasions and I have confirmed that it is charging.

I suspect the fuel pump or fuel pump relay, but don't know how to determine which one (if either). I have seen some posts about the relay and that the solder joints may go bad. This sounds like a likely problem, but I have not seen a good picture or image where I can locate the relay. I know it is under the dash, but can anyone tell me specifically where it is - a picture of the area would be great! Also, a picture of the actual unit would be very helpful.

I would appreciate any help that could be provided. Thanks.
 

·
Registered
Joined
·
4 Posts
Discussion Starter · #3 ·
Thanks for the reply. I have not had the valves checked. Other than the starting issue, the car runs fine. Regarding the relay, it is not an expensive part (about $35 on Rock Auto). I am likely to tackle the replacement myself if someone has some detailed instructions to provide. That is what i am looking for. Thanks.
 

·
Registered
Joined
·
34 Posts
Its not the pump relay. If it was, your problem would occur when driving in congested traffic on a hot day.
I've had cold start problems on my '01, as well as rough idling when cold and stalling at a red light within 10 minutes of starting the engine.

Its the valves - they are too tight, opening too long, not closing long enough, or not even closing entirely. It also kills your cats prematurely with unburnt fuel.

Don't go to a general repair shop. Go to a Honda/Acura specialist and it'll be routine. If you don't know when your timing belt was changed, have the mechanic remove the front cover and check it. It should look like new - any cracks or shredding at all and it should be replaced. About $350
There's no discount for doing the timing belt (always change tensioner, idler pulley, and waterpump with belt) at the same visit as a valve job, they are unrelated. But if you have symptoms, they are unavoidable. Maybe $550-$650 labor plus parts.

When you get a valve job done, they shouldn't charge you extra labor to change out the spark plugs ($13.50ea partsgeek.com, valve cover gaskets $7.50ea, spark plug tube seals $3 hondapartsunlimited.com), but will charge you more than double for parts if they have to buy them. You can order these ahead of time and provide them.
 

·
Registered
Joined
·
4 Posts
Discussion Starter · #5 ·
Hello. For those of you that are interested, I did find and change the Fuel Pump Relay (technically PGM-FI Main relay), and that appears to have solved my problem. The relay is located under the dash on the driver's side to the right of the steering column. It has one fairly large connector. Please see the attached photo. It is the relay with the white bottom on the left side of the picture. I got a replacement part from Advance Auto for about $40.
I hope that is helpful.
 

Attachments

1 - 5 of 5 Posts
Top