Air Pump?
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Freshman User
Joined: Jun 1999
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Air Pump?
I've had an intermitant chirp, that has now become a full blown squell. I think its is coming from my air pump, I had the belt off, and that pulley is the only one that has play in it. Is there a way to check for sure? and how hard and expensive is it to replace this part? Is it really needed? 92 F150 4x4 xlt with 302 v-8 auto.
Thanks for any input.
Thanks for any input.
Senior User
Joined: Aug 1999
Posts: 343
Likes: 0
Air Pump?
>belt off, and that pulley
>is the only one that
>has play in it.
That would be a good indication that is the problem. Sometimes I have heard the pumps squeel on the belt because the intake filter (looks like a coffee can) is clogged. Check it first. Sometimes I have seen them squeel because the output hose/pipe is clogged. Check it too.
>Is there a way to
>check for sure?
What do you mean? Check for sure would be to replace the pump and see if the squeel stops. Not sure what you mean.
>how hard and expensive is
>it to replace this part?
Not too hard, the pump isn't cheap though. I don't have the price in front of me, maybe someone here has replaced one recently.
> Is it really needed?
Now here is where the rubber meets the road. Is it really needed? The air pump is ONLY for emissions purposes. At idle or high manifold vacuum situations, it directs fresh air into the exhaust to aid the catalytic converter in burning unburnt HC's. Since it is illeagal to disable emissions equipment, you must leave it alone or replace it. BUT if you did remove it and you kept the truck in tune, I bet you would pass most (not CA's or visual inspections) states emissions tests without a problem. Add a MSD 6A ignition system and i gaurantee it would pass.
Later.
Randy
88 f-150 4x4 302 5speed
>is the only one that
>has play in it.
That would be a good indication that is the problem. Sometimes I have heard the pumps squeel on the belt because the intake filter (looks like a coffee can) is clogged. Check it first. Sometimes I have seen them squeel because the output hose/pipe is clogged. Check it too.
>Is there a way to
>check for sure?
What do you mean? Check for sure would be to replace the pump and see if the squeel stops. Not sure what you mean.
>how hard and expensive is
>it to replace this part?
Not too hard, the pump isn't cheap though. I don't have the price in front of me, maybe someone here has replaced one recently.
> Is it really needed?
Now here is where the rubber meets the road. Is it really needed? The air pump is ONLY for emissions purposes. At idle or high manifold vacuum situations, it directs fresh air into the exhaust to aid the catalytic converter in burning unburnt HC's. Since it is illeagal to disable emissions equipment, you must leave it alone or replace it. BUT if you did remove it and you kept the truck in tune, I bet you would pass most (not CA's or visual inspections) states emissions tests without a problem. Add a MSD 6A ignition system and i gaurantee it would pass.
Later.
Randy
88 f-150 4x4 302 5speed
Thread Starter
|
Freshman User
Joined: Jun 1999
Posts: 33
Likes: 0
Air Pump?
>You may want to try replacing
>the belt. They tend to
>dry out causing a chirping
>sound. I just replaced the
>belt on my '88 F150
>302 2wd and chirping is
>gone.
This is my 2nd belt, that was my 1st concern. have used belt dressing also.
>the belt. They tend to
>dry out causing a chirping
>sound. I just replaced the
>belt on my '88 F150
>302 2wd and chirping is
>gone.
This is my 2nd belt, that was my 1st concern. have used belt dressing also.
