Smog pump on 1991 420sel

[Panzermann]

My smog pump rattles for about 1-2 min after start-up. Does this mean it's gone bad? Even if it has, is it worth replacing. I thought the smog pump only worked on car start-up.

[dpetryk]

I would disconnect the wire that engages the clutch. These things are only used to geet the cat up to temp faster. Expensive to replace and not really needed.

[Hit Man X]

You can have mine if you want, just pay shipping.

[Panzermann]

Originally Posted by Hit Man X

You can have mine if you want, just pay shipping.

?Really? Not much to ship to Tucson, I don't think. I'm a little compulsive, and having a properly functioning one satisfies me (even if it's an unnecessary functioning one, whatever it is). What is the opinion regarding why it rattles on activation? Bad bearing?

[Hit Man X]

I don't have the emission stuff on my car anymore.

[Panzermann]

How long did you have it on for?

[Hit Man X]

221K as shown on the odometer. The clutch on it spins free.

[Panzermann]

I'd be thrilled to have it. Send me private message regarding your requirements for shipping.

[autozen]

Originally Posted by Panzermann

My smog pump rattles for about 1-2 min after start-up. Does this mean it's gone bad? Even if it has, is it worth replacing. I thought the smog pump only worked on car start-up.

It is normal for them to make a slight annoying noise during operation.

[autozen]

Originally Posted by Panzermann

My smog pump rattles for about 1-2 min after start-up. Does this mean it's gone bad? Even if it has, is it worth replacing. I thought the smog pump only worked on car start-up.

It is normal for them to make a slight annoying noise during operation.

[Panzermann]

Would you define a "slight annoying noise" as a rattle for 1-2 min?

[david s poole]

you dont need it.if the authorities started testing cars cold there would be a rebellion because more than 50% would fail.besides you get a little better fuel mileage with one less pulley to turn.david poole european performance dallas tx.

[autozen]

Originally Posted by Panzermann

Would you define a "slight annoying noise" as a rattle for 1-2 min?

If it's only discernable, that is correct. I wouldn't disconnect it for a slightly annoying noise. It is doing its job to help us all breathe better. At least with clean air, we can live a more comfortable life while we slowly die from all the hormones and chemicals they put in our food.

[Panzermann]

Originally Posted by david s poole

you dont need it.if the authorities started testing cars cold there would be a rebellion because more than 50% would fail.besides you get a little better fuel mileage with one less pulley to turn.david poole european performance dallas tx.

Good point. What fraction of potential pollution is eliminated by the function of the smog pump?

[autozen]

Originally Posted by Panzermann

Good point. What fraction of potential pollution is eliminated by the function of the smog pump?

You and 10,000 others doing the same thing could make a difference.