air pump relay
Can someone tell me which relay in the under hood fuse box is the air pump relay..I need to check it as part of my dic P0410 troublshooting procedure?
Thread Starter
Intermediate
Joined: Sep 2004
Posts: 25
Likes: 0
From: Sagaponack New York
...yea, I just realized that there is a key in the fuse box lid, the CEL frustration is messin' with my thinking cap. I swapped the horn relay(same), with the pump relay, the horn still works, sh** not the answer, that leaves the passenger side check valve, which is a tough nut. Any other ideas? I checked the drivers side check valve and the pump is working too, I can't afford to take this in and spend BIG bucks getting the intake pulled to verify the other check valve...any other possibilities on this??
I never thought my FUN car would be such a pain in the a**.
I never thought my FUN car would be such a pain in the a**.
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
I would try to get it off without pulling the intake. It's possible to get to the bolt that holds the bracket to the driver's head using a ratcheting wrench. I sent the pic below to another member here the other day and he did it. Worst case. it doesn't take long to get the intake off. I definitely wouldn't take it to the dealer just for that if you're even moderately motivated to diy.
Thread Starter
Intermediate
Joined: Sep 2004
Posts: 25
Likes: 0
From: Sagaponack New York
...Thanx for the input, I need a torque wrench for the intake removal, anybody know the setting for intake reinstallation? I will try the bolt removal based on your diagram first, and if its bad I'll swap out the other ck valve and then go buy a new one for the drivers side. Is the passenger side ck valve a common problem, the drivers side was working perfectly, blows one way.
BTW will the ck valve cause a rough idle, or is this a carbon build-up problem?
BTW will the ck valve cause a rough idle, or is this a carbon build-up problem?
Former Vendor
Joined: Apr 2001
Posts: 10,976
Likes: 21
From: FL
St. Jude Donor '13
A P0410 code is very common on the 2000 and 99% of the time it is caused by a vacuum leak.The 2000-04 has a vacuum operated vacuum control valve (much like an old heater control valve) located by the air pump down stream of the air pump.In other words,even though the air pump operates on start-up,insufficient air passes through this control valve to the exhaust manifolds if it isnt getting vacuum.The control valve is commanded on (open) by a vacuum solenoid and related vacuum lines that route under the battery.Being that you have a pre AGM battery 2000,check to make sure you dont have acid damage under the tray deteriating the vacuum lines.A telltale sign would be inop cruise control or A/C that does not blow out the correct vents.All these systems get their vacuum source from the port on the back of the intake.
The PO410 code is only caused by insufficient air to BOTH sides of the exhaust manifolds.A P0416 code,etc,will set if insufficient air is only detected on ONE side of the manifolds,such as a restricted check valve.
The PO410 code is only caused by insufficient air to BOTH sides of the exhaust manifolds.A P0416 code,etc,will set if insufficient air is only detected on ONE side of the manifolds,such as a restricted check valve.
