AIR Pump

[rccktmn2]

timing

The belt has nothing to do with the timing. Depending on what you did on the tune up you shouldn't have to mess with the timing unless you had the distributor out or you moved it for some reason. At the same time you might want to check the vacuum lines there are about a dozen or so of them under the hood, if one is cracked or leaking or unplugged you will loose power and possible throw the timing off depending on which vacuum line is leaking or off so just putting a timing light on it will tell you if the timing is off but I would check the vacuum lines first just to be sure.

 

[Blake442]

Make sure all your plug wires are in the right spot, sounds like you might have one crossed.

 

[kustomkyle]

What effect would just removing the AIR pump have on all of the other sensors and smog equipment (EGR valve, EGR solenoid, knock sensor, etc)? Isn't the computer also pre-set to run with all the factory equipment in place, and removal of one component confuse the system, leading to incorrect symptoms of carburetor problems/timing issues/etc. leading to adverse effects on performance?

The air pump (from what I have come to understand) pumps air into the air cleaner, and recirculates it into the catalytic converter and around here and there. Wouldn't removing this extra air source cause a richer mixture or something and throw the computer off? Mine is partially blocked off because the cat had to be removed, and the engine doesn't seem to like the current configuration. Wouldn't the best thing to do be to remove ALL smog equipment and, therefore, the computer as well? Or no?

 

[megaladon6]

the AIR system pumps air out of the air cleaner and into the exhaust. the extra oxygen helps the cat to warm up faster and it dilutes the tailpipe emissions. this can cause the O2 sensor to read leaner than the true mix but i don't think it'll be enough to cause any real driveability problems.

 

[Blake442]

The oxygen sensor is ahead of the cat. converter, and will not read any differently if the air pump is functioning or not.

Like mentioned before, it's only purpose was to dillute the tailpipe emissions and to help the cat come up to temp when cold.

9 out of 10 of these cars already have the belt off the air pump by the time we buy them anyways. When new, it served a purpose. Now, it is pretty much useless.

Take it all off.

My 442 had no belt on it when I bought it. It ran like a top. No check engine lights either.
I removed all the stuff, and it still ran like a top. No check engine lights.

 

[KCEE442]

Make sure all your plug wires are in the right spot, sounds like you might have one crossed.

Yeah, i did that, lol that was the 1st problem, #5 dosnt belong on #7 and vice versa, so with that fixed runs alot better.
But i also removed the cat, and now the motor has no back pressure, and i ahve no bottom end, so im going to put a straight pipe in the cats place.
After all done, gonna be running mint!

But with the removal of the smog/air pump and a/c
it really cleans up the engine compartment!

 

[KCEE442]

With the removal of the a.c and air pump
is the timing still the same as factory?

 

[custom442]

With the removal of the a.c and air pump
is the timing still the same as factory?

Why would it be different? They're just belt driven accessories.

 

[custom442]

Re: huh

The efficiency of the engine has everything to do with the cat converter/air pump/and carb, if it's stock.

Not when emissions are out of the picture.

 

[86CutlassUCF]

thanks for the all input everyone...im just going to take it all off