Hello, I have a 1992 190E 2.6. The smog/air pump rattles like crazy. My mechanic says that it will cost $800. I am wondering if this is a tough job. I have found the rebuilt part, and other auxilliary parts to replace with it, for around $375. If it is an easy job, I may have someone besides my Mercedes repair shop replace it (muffler shop, for example?) What do you think? This is the first time I have considered finding someone that is not a MB shop. This car is basically in retirement and I don't want to spend too much fixing it. Thanks
92, Smog Pump??? I didn't know there was a smog pump on my 92. Well, a 2.3 doesn't have one. I looked at Autohausaz, yup just what I thought one looked like and they are also $ 300.
I assume they are attached similar to say an alternator or power steering pump. On a 2.3 the alternator is pretty easy, the A/c compressor is another animal. So depending where it's at and what's in the way makes it hard or easy.
I wish I could help but I even scanned through the online manual and I didn't even find it yet.
I notice Autohausaz is also rebuilt and a core charge of $ 175 but includes the clutch, where a NEW Clutch unit by itself run over $ 400, wow. So I hope your rebuilt includes the clutch.
My guess if you can change an alternator or belts you should be able to do this. Hopefully someone who has actually done the job can answer better than I.
It is an easy job, took me about 3 hours and a six pack.
1) Remove bumper (4 bolts easy to remove, and easy to reach 13 mm wrench)
2) Remove both fan (a Phillips screwdriver and 10 mm wrench)
3) Remove hoses, drain the antifreeze and remove radiator (flat and Phillip screwdriver)
4) Release serpentine belt tensioner and remove belt (14 or 15 mm wrench)
5) Remove old smug pump and place the good one (13 mm wrench (2 bolts very easy)
Have two beers
6) Start put all the parts back in reverse
Note: you need to remove a hose attached to the smug pump and make sure you put a vacuum line back to the smug pump.
========================
Comment: the pump that I replaced I got it from a yunk yard, and 3 weeks later the pump fails again the noise came back again.
Then
A mechanic suggests me to disconnect the pump, to remove it and replace the serpentine belt for a smaller one. The mechanic explains to me what the pump does. So
4 weeks later I removed the pump, I plugged the end of the hose and the vacuum line. I install a smaller size serpentine belt and the car after 600 hundred miles, is running better than ever, no Engine light, no engine problem, the car has the same power than before.
So fellows you make your own decision.
In my case I have to do the same job twice because the failing pump
If you need more details and pictures just let me know
It is an easy job, took me about 3 hours and a six pack.
1) Remove bumper (4 bolts easy to remove, and easy to reach 13 mm wrench)
2) Remove both fan (a Phillips screwdriver and 10 mm wrench)
3) Remove hoses, drain the antifreeze and remove radiator (flat and Phillip screwdriver)
4) Release serpentine belt tensioner and remove belt (14 or 15 mm wrench)
5) Remove old smug pump and place the good one (13 mm wrench (2 bolts very easy)
Have two beers
6) Start put all the parts back in reverse
Note: you need to remove a hose attached to the smug pump and make sure you put a vacuum line back to the smug pump.
========================
Comment: the pump that I replaced I got it from a yunk yard, and 3 weeks later the pump fails again the noise came back again.
Then
A mechanic suggests me to disconnect the pump, to remove it and replace the serpentine belt for a smaller one. The mechanic explains to me what the pump does. So
4 weeks later I removed the pump, I plugged the end of the hose and the vacuum line. I install a smaller size serpentine belt and the car after 600 hundred miles, is running better than ever, no Engine light, no engine problem, the car has the same power than before.
So fellows you make your own decision.
In my case I have to do the same job twice because the failing pump
If you need more details and pictures just let me know
Interesting. I am wondering why the bumper and the fans, or the Radiator for that matter. Where is this pump? What if he has A/c, don't want to opening up those lines.
Can't be done like changing an Alternator or Steering Pump?
Problem around here in Calif, removing it the car wouldn't pass the Smog Test every two years.
I have the same question before I did mine ???? Why i have to do all that work ??
Here is the answer.
I did it that way because I was following the manual, and i did it by mayself with out any help but the beers.
However if you have mechanical skill, and someone that help you to hold the serpentine belt in place you will save your self a lot of time.
The hard part is to place back the serpetine belt and ajust it.
Remove the smup pum is easy, you only need to remove two 13mm bolts; one at front and one in the back , and disconnect the two vacum lines.
As long we are talking for 190E 2.6. this model , the 2.6 has less space to work than model 2.3.
Tks, I figured there might be a distance issue with the longer motor.
Dan
Murphy's laws as applied to Auto Repair.
Murphy's Laws:
1. Nothing is as easy as it looks.
2. Everything takes longer than you think.
3. Anything that can go wrong will go wrong.
4. If there is a possibility of several things going wrong, the one that will cause the most damage will be the one to go wrong. Corollary: If there is a worse time for something to go wrong, it will happen then.
5. You never run out of things that can go wrong.
6. If anything simply cannot go wrong, it will anyway.
7. If you perceive that there are four possible ways in which a procedure can go wrong, and circumvent these, then a fifth way, unprepared for, will promptly develop.
8. If everything seems to be going well, you have obviously overlooked something.
9. It is impossible to make anything foolproof because fools are so ingenious.
10. Whenever you set out to do something, something else must be done first.
11. Every solution breeds new problems.
I have to agree with the removal, if you live somewhere there are no smog laws. Like sunny BC. Well, not on the coast. But everywhere else.
In fact, removal of smog items should be #1 priority. To that end, what all can/should be removed? I looked for a thread and couldn't find one. Which doesn't mean it ain't there I suppose.
).
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