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500Eboard Management
OWNER nocfn
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- Start date
Not yet, but I hope to put it on the butt dyno soon and then run thru the SDS system after the fact. I have AC in the shop but I want to get to walk in cooler status before I hook up the diagnostics. "crossing fingers". Have to navigate the home-front, and while the thought of just getting a new AMG 2 door beast is possible, I like my old cars.
I showed injector removal and installation in my 2020 Top-End Refresh thread. Along with pintle and filter replacement on the injectors.
Note that the intake manifold design on late 1993 and 1994 cars is different from 1992 and most 1993 cars, and doesn’t require an extra o-ring that the earlier cars require.
According to the EPC, this change occurred after engine #8409, which is roughly late 1993 calendar year production, or mid-1994 USA model year. I don't know if the EPC break point is accurate - it's been wrong more than once.
Early engines have a plastic/nylon (?) bushing p/n 119-070-03-55 (photo below) that inserts into a large hole in the intake manifold, and the injector inserts into the bushing. Later engines deleted this bushing and have a smaller hole, and the injector inserts directly into the aluminium manifold. The bushing should not need replacement unless broken, if it comes out of the manifold, clean the bores and re-install.
I have dropped them off at the shop. Gave him the specs and let them know regardless of what he thinks they should look like based on engine breaks, I showed him one that was still in possession of pintle cap and the o-rings and they should all look the same.
this one came out perfect from cyl #1
this one came out perfect from cyl #1
Attachments
I do not have the nylon bushing things. I plugged holes and macgyvered a vacuum tool and went all around the intake, I got some plastic bits most likely pintle caps parts. So I will do the process again but I am confident that the intake will clean of detritus - some of the injectors came off so easy as they did not have O rings, the just crumbled when I pulled up the fuel rail yet they had capsl.
134,900
Had the fuel injectors cleaned and rebuilt. Most were missing pintle caps, some had missing O-rings. The bosch team said almost all of them were obstructed with internal Filter failures. Test drives- short trips at temp and highway proved smooth power and down shift experience. I hope to get her running alot over the next few days baring our little hurricane.
Had the fuel injectors cleaned and rebuilt. Most were missing pintle caps, some had missing O-rings. The bosch team said almost all of them were obstructed with internal Filter failures. Test drives- short trips at temp and highway proved smooth power and down shift experience. I hope to get her running alot over the next few days baring our little hurricane.
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134,900
Well I have concluded that the live data was intermittently showing spike in voltage to cyl 3. I had just installed MB plugs and replaced the plug in question. The issue has not presented with either the new BERU wires (or the old one for that matter). So after several drives, I really just think that all of my live data is perfect, even accelerating to 3,000 RPMS in the shop (yes at temp only) and my scoped miss is no longer there. I reset everything electronically, replaced everything but the driver of the vehicle and consider this chapter closed. I also used 3 EZL in the process and determined they all are in sound working order. I changed out the original rotor bracket that was not flat when checked for surface level since it was really beat up after the rotor failure. It may not have been the panacea, but it was replaced out of principle. Next up is to determine if my oil is ready to be changed based on miles.....
Well I have concluded that the live data was intermittently showing spike in voltage to cyl 3. I had just installed MB plugs and replaced the plug in question. The issue has not presented with either the new BERU wires (or the old one for that matter). So after several drives, I really just think that all of my live data is perfect, even accelerating to 3,000 RPMS in the shop (yes at temp only) and my scoped miss is no longer there. I reset everything electronically, replaced everything but the driver of the vehicle and consider this chapter closed. I also used 3 EZL in the process and determined they all are in sound working order. I changed out the original rotor bracket that was not flat when checked for surface level since it was really beat up after the rotor failure. It may not have been the panacea, but it was replaced out of principle. Next up is to determine if my oil is ready to be changed based on miles.....
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E500. 125,192
Replaced to upper trunk stops and made sure that the contact was minimal.
Also I replaced the S29 switch on the accelerator. I had the code a few times during my issues and italwayes always cleared. The weather was cool enough here that I was inspired to contort myself to do the job. So the original awitch switch was replaced.
(correcting tiny mobile keyboard spelling errors)
Replaced to upper trunk stops and made sure that the contact was minimal.
Also I replaced the S29 switch on the accelerator. I had the code a few times during my issues and it
(correcting tiny mobile keyboard spelling errors)
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E500
135,887
Today I went back to my fabricator who welded in my X pipe to the Flieben stem to stern cat delete system. Since we had a lot happening in that test pipe, we wanted to retain the X pipe and decided to cut the 200 cell bullet cat down from the 2.25 pipe to the 3" portion just outside the honeycomb. So we installed it in the 3" diameter resonator delete pipe just shy (north) of the axle where the jig began the flat spot for the axle. My issue was the loudness on kickdown making the car sound like drifter with bald tires @ 4000 rpm but only moving 10mph. HA no offense but the acceleration note is now acceptable and if I need to add another, there is plenty of room forward of the cat delete pipes. Quite pleased with the changes.
Finally ending the saga of a rotor failure and all the drama of wasted cats and removal/replacement and chasing down ignition issues, bad MAF - replaced that, plugs, wires, rotors, caps, cam sensor, EZL, coils, vac lines, EGR gasket, throttle pedal switch, have the Crank sensor but not installed it. So officially complete....until the next time.
135,887
Today I went back to my fabricator who welded in my X pipe to the Flieben stem to stern cat delete system. Since we had a lot happening in that test pipe, we wanted to retain the X pipe and decided to cut the 200 cell bullet cat down from the 2.25 pipe to the 3" portion just outside the honeycomb. So we installed it in the 3" diameter resonator delete pipe just shy (north) of the axle where the jig began the flat spot for the axle. My issue was the loudness on kickdown making the car sound like drifter with bald tires @ 4000 rpm but only moving 10mph. HA no offense but the acceleration note is now acceptable and if I need to add another, there is plenty of room forward of the cat delete pipes. Quite pleased with the changes.
Finally ending the saga of a rotor failure and all the drama of wasted cats and removal/replacement and chasing down ignition issues, bad MAF - replaced that, plugs, wires, rotors, caps, cam sensor, EZL, coils, vac lines, EGR gasket, throttle pedal switch, have the Crank sensor but not installed it. So officially complete....until the next time.
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E500
136,210
Today I dropped off the E500 at my local indy shop. Since I was last there in 2017 for transmission rebuild, they became a full authorized MB service shop, complete with all MB service tools and diagnostic equipment licensed from MB. Complete with HHT for the E car and everything else for the rest of the fleet. I am glad, I am a small biz owner and have been supporting them since 2010. They have since taken over the entire building and their 16 bays are full with MB Audi and BMW of various ages. The E500 was a show stopper as a few of the guys are just 30, and the car is older than them and that was pretty fun. So I EXPECT TO GET THE CAR BACK if not tonight, lunch time on the 9th. They will replace both the Front LCA with my NLA units from parts stash, clean up the originals for my refurbishment on the DS Boot and perform front alignment.
Same two guys there when I found them just after they opened back in 2010, so it was nice to see them.
Just back from the shop with the E500. Did not know how bad things were until new units were installed. Things are subtle but just better. The OE units have both boots obliterated. The good news... Both joints are solid and will get new boot treatments. On the fence about new bushings but if we are going to clean them, repaint, grease with new boots then perhaps the bushings get done as well. The parts will follow the car at some point but for the right price ( I could be swayed to sell them )
Here is a bonus, the shop put a total of 1.7 miles on the car which is about right. The alignment shop is 3 blocks away and the test drive loop they take is about 1.4 miles round trip. I have been other places with other cars that seem to have many more miles when I get it back.
136,210
Today I dropped off the E500 at my local indy shop. Since I was last there in 2017 for transmission rebuild, they became a full authorized MB service shop, complete with all MB service tools and diagnostic equipment licensed from MB. Complete with HHT for the E car and everything else for the rest of the fleet. I am glad, I am a small biz owner and have been supporting them since 2010. They have since taken over the entire building and their 16 bays are full with MB Audi and BMW of various ages. The E500 was a show stopper as a few of the guys are just 30, and the car is older than them and that was pretty fun. So I EXPECT TO GET THE CAR BACK if not tonight, lunch time on the 9th. They will replace both the Front LCA with my NLA units from parts stash, clean up the originals for my refurbishment on the DS Boot and perform front alignment.
Same two guys there when I found them just after they opened back in 2010, so it was nice to see them.
Just back from the shop with the E500. Did not know how bad things were until new units were installed. Things are subtle but just better. The OE units have both boots obliterated. The good news... Both joints are solid and will get new boot treatments. On the fence about new bushings but if we are going to clean them, repaint, grease with new boots then perhaps the bushings get done as well. The parts will follow the car at some point but for the right price ( I could be swayed to sell them )
Here is a bonus, the shop put a total of 1.7 miles on the car which is about right. The alignment shop is 3 blocks away and the test drive loop they take is about 1.4 miles round trip. I have been other places with other cars that seem to have many more miles when I get it back.
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E500
xxx,xxx
Replaced the headlight rotary switch with new MB Unit. Since I had no spare, I bought a NAPA source with all the discounts and they sent me a MB manufactured switch for my spare. The replaced unit had no audible clicking, but did have a burn mark on the back of it. Harness showed no damage.
xxx,xxx
Replaced the headlight rotary switch with new MB Unit. Since I had no spare, I bought a NAPA source with all the discounts and they sent me a MB manufactured switch for my spare. The replaced unit had no audible clicking, but did have a burn mark on the back of it. Harness showed no damage.
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Yes the issue has been corrected. Now the peanut light is very faint(I can live with that but the light for the vent was dangling so I have to get that out to restore that frosty bulb that works! (Both bulbs work but not very bright on the switch. It may be contraband plastic switch cover, not sure.
Noticed today that I am having some sagging of my headliner felt. Typical foam-backed material commonly used that due to heat, separates from the glued side to the form, and the visible material showing a sag. I suppose I should drop it all down myself and take the shell form and the slider for the sunroof in so the shop cannot break the B/C pillars. Not sure yet, just expressing a project on the way.
MEH back from a week away and find rough running car. Noticed my brake booster vacuum pipe was loose at the intake connection - that was a vacuum loss. Also removed caps and used some electrical cleaner on the insides, removed and reinstalled wires to caps. Removed plugs and checked for anomaly but they were good. Took a few minutes at temp but she responded well. Also added about 1.2 lbs of r134a as the compressor was not engaging. It was about 28 months since I needed to add any refrigerant. I can live with that. Replaced the seal in the service cap, no evidence of bad valve so will monitor.
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08/02/2025 xxxxxxxx Miles
Tired of battling the issues of ignition, even with slots and new wires rotors brackets caps coils, just no real cure for the ignition woes. Today I stripped it all off, wiped every ignition component with WD40 soaked lint free cloth including the aluminum it all connects to and reinstalled. We shall see how well / long the perfect drive lasts out of the box.
Tired of battling the issues of ignition, even with slots and new wires rotors brackets caps coils, just no real cure for the ignition woes. Today I stripped it all off, wiped every ignition component with WD40 soaked lint free cloth including the aluminum it all connects to and reinstalled. We shall see how well / long the perfect drive lasts out of the box.
Wow! I got the C126 ready for giggles. Pealing back the cover for this first time in maybe 6 months, I have to admit I was awed all over again. I opened the hood and removed the battery trickle, checked fluid levels and removed the CPS from the EZL. I opened the door and took a seat and the vault sound of the door closing quickly gave way to a visual, and nasal experience of quality. From the awesome S class seats, to the visuals of the handmade interior it was like the first time all over again. I gave her about 10 seconds to listen to the pumps prime and the usual warning light as expected let me know that indeed the tender did its job. I gave her a few short turns of the motor to lube things up a bit, then I replaced the CPS cable and got back in. Turning the key over to listen to the reliable beep until she shut off in a few seconds ...... telling me it was good for start -up. I have to admit that there is that fleeting thought at the very moment that the engine seized or the chain and tensioner will fail or whatever.... Alas, the final turn of the key was like pressing a button quickly and recoiling from it. The engine turned once and roared to life. (roared as in the car has AMG cloned headers with dual exhaust with just two magna-flow 2 in/out mufflers for drone. A guttural sound that lets you know of things to come.) Such a simple setup for the power train M117 compared to the M119.
After getting to temp, I eased her out of the stall and to my glee, no oil evidence on the cardboard under the car's engine bay. That was pretty dope I must say. So I gave her a kid gloves ride for about 20 minutes, shifting gears manually letting things get well circulated. Then I enjoyed almost like a teenager manually hitting the shift point indicators at full throttle on a half mile stretch of country road with no traffic. From there I headed to the interstate for about 30 minutes to continue my Italian tune-up but didn't get much over 80 due to traffic. This will be my ride until late spring when the R12-fitted AC that is converted to 134A becomes silly in the Texas heat. (I have a R134 condensor to retrofit but that project went on hold after the mandatory ignition work and exhaust replacement on the E500 took my priority).
Falling in love again with the C126 never gets old.
After getting to temp, I eased her out of the stall and to my glee, no oil evidence on the cardboard under the car's engine bay. That was pretty dope I must say. So I gave her a kid gloves ride for about 20 minutes, shifting gears manually letting things get well circulated. Then I enjoyed almost like a teenager manually hitting the shift point indicators at full throttle on a half mile stretch of country road with no traffic. From there I headed to the interstate for about 30 minutes to continue my Italian tune-up but didn't get much over 80 due to traffic. This will be my ride until late spring when the R12-fitted AC that is converted to 134A becomes silly in the Texas heat. (I have a R134 condensor to retrofit but that project went on hold after the mandatory ignition work and exhaust replacement on the E500 took my priority).
Falling in love again with the C126 never gets old.
@nocfn,
Louis that’s a great story. My 500E is hibernating until spring. I have a lot of tuneup work to do. It’s been off the road since May 24 when it started running bad and was due for a smog check also. So in September when my insurance came due I took it off of my AAA policy and put the car on a CA Non-Op status until it’s ready to drive on the road again. I intend to sign up with Grundy when I put it back on the road in the spring. I have been starting it and moving it out of the garage to allow me to get to my work bench in front of it. So far the battery tender is also doing it’s job.
BTW, have you ever made a video of your 126’s exhaust sound? For one I would like to hear what your AMG cloned headers w/ no CATs sounds like. It must be awesome.
Louis that’s a great story. My 500E is hibernating until spring. I have a lot of tuneup work to do. It’s been off the road since May 24 when it started running bad and was due for a smog check also. So in September when my insurance came due I took it off of my AAA policy and put the car on a CA Non-Op status until it’s ready to drive on the road again. I intend to sign up with Grundy when I put it back on the road in the spring. I have been starting it and moving it out of the garage to allow me to get to my work bench in front of it. So far the battery tender is also doing it’s job.
BTW, have you ever made a video of your 126’s exhaust sound? For one I would like to hear what your AMG cloned headers w/ no CATs sounds like. It must be awesome.
C126 Miles 186,381
Yesterday I finished the brake reservoir change on my C126. It was original, and thankfully a new MB bottle was available (they now show NLA). Anyway I did have to go to Mcflaps for the for my son 's Tacoma so I got their best DOT4 for the C126. Used the Motive Brake bleeding system without incident. The bottle I received had a hard white bubble over the switch for low fluid whereas the OE had a black rubber cover on the switch. Other than that, the after market ATE MC rubber grommets were tight both to the bottle and the MC unit. I do not expect any issues, but I have not run the car yet. I will add miles once I am certain the efforts were a mechanical success.
Yesterday I finished the brake reservoir change on my C126. It was original, and thankfully a new MB bottle was available (they now show NLA). Anyway I did have to go to Mcflaps for the for my son 's Tacoma so I got their best DOT4 for the C126. Used the Motive Brake bleeding system without incident. The bottle I received had a hard white bubble over the switch for low fluid whereas the OE had a black rubber cover on the switch. Other than that, the after market ATE MC rubber grommets were tight both to the bottle and the MC unit. I do not expect any issues, but I have not run the car yet. I will add miles once I am certain the efforts were a mechanical success.