mis-u-jerr
02-27-2004, 02:41 PM
OK, got my car back from 3 weeks of warranty work.
99 C43, 42K miles. The main complaints that I had were down on power; whiney 2nd gear, clunky shifts, not shifting in time and hitting the rev limiter; and various noises coming from the rear end (amongst other smaller problems).
The main reason I am writing is to get your guys input about things that are still wrong, because I am taking it back in on Monday. The transmission still slams up against the rev limiter before shifting, but unfortunately, only intermittently. So this gives the guys free reign to beat on my car. Oh well, gotta get it fixed somehow. The tech said that he will order a new ecu for the transmission and see if it fixes that problem.
But now there is a new problem. When on the power, at higher rpm’s, say above 4K, there is a high pitched whine coming from the transmission. He is not really sure what that is coming from. He said that he replaced most of the parts in the trans, and the housing and shaft were about the only things left that are original. This is really why I am writing, anybody have any clues about this??
It used to have a clunky 3-2 shift, that seems to be better, but the 1-2 shift now seems clunky.
The rest of this will talk about what was done; maybe it can help someone out, or at least add to the knowledge database out there.
Transmission:
The bearings in the freewheel unit were literally falling out – replaced that.
Replaced the front pump and valve bodies while he was there. (Valve bodies have been linked to transmission failure on another mbworld thread). Also adjusted clutch packs. The 2nd gear whine still is the same. He drove another tech’s C43 and said it sounded about the same. (Luckily a tech there has one for comparison.)
Engine Down on power, not running right – Bad MAS, running too rich. Man, I knew it was down, but I couldn’t believe the diff it makes. ½ throttle now is about where full throttle was.
Whirring noise in engine - Someone else had a thread once that said his engine sounded like a weed-whacker. I don’t remember the outcome of that one, but mine had a whirring sound that just wasn’t right. Turned out that the cams were scored. He says he has seen this before. Due to aggressive programming? I don’t remember. But it sounds somewhat better now.
It seemed like the door drain plugs were…plugged. There was water pooling up in the door wells when it rained. He found that there were pine needles plugging the drains coming from the sunroof. Which is kinda weird because I (thought that) I always close mine.
When I would back up, there would be a “boink†noise under load, he replaced the sway bar links and it doesn’t do it now.
The rear seat would not fold down. There are 2 screws that are under the rear deck (inside) that were loose, tightened up.
Bad driver’s side seat switch, replaced.
The fake-ass faux CF B-pillars were fading, (have seen this a lot), replaced.
Replaced pass. side windshield washer, was leaking.
Oh yeah, he found 2 leaks that I hadn’t seen, in the rear diff and in the oil pan, replaced the seals.
OK, that is enough for now, I think… Sorry for the cross posts, but I wanted to reach as many people as possible with my questions.
Thanks for any input.
99 C43, 42K miles. The main complaints that I had were down on power; whiney 2nd gear, clunky shifts, not shifting in time and hitting the rev limiter; and various noises coming from the rear end (amongst other smaller problems).
The main reason I am writing is to get your guys input about things that are still wrong, because I am taking it back in on Monday. The transmission still slams up against the rev limiter before shifting, but unfortunately, only intermittently. So this gives the guys free reign to beat on my car. Oh well, gotta get it fixed somehow. The tech said that he will order a new ecu for the transmission and see if it fixes that problem.
But now there is a new problem. When on the power, at higher rpm’s, say above 4K, there is a high pitched whine coming from the transmission. He is not really sure what that is coming from. He said that he replaced most of the parts in the trans, and the housing and shaft were about the only things left that are original. This is really why I am writing, anybody have any clues about this??
It used to have a clunky 3-2 shift, that seems to be better, but the 1-2 shift now seems clunky.
The rest of this will talk about what was done; maybe it can help someone out, or at least add to the knowledge database out there.
Transmission:
The bearings in the freewheel unit were literally falling out – replaced that.
Replaced the front pump and valve bodies while he was there. (Valve bodies have been linked to transmission failure on another mbworld thread). Also adjusted clutch packs. The 2nd gear whine still is the same. He drove another tech’s C43 and said it sounded about the same. (Luckily a tech there has one for comparison.)
Engine Down on power, not running right – Bad MAS, running too rich. Man, I knew it was down, but I couldn’t believe the diff it makes. ½ throttle now is about where full throttle was.
Whirring noise in engine - Someone else had a thread once that said his engine sounded like a weed-whacker. I don’t remember the outcome of that one, but mine had a whirring sound that just wasn’t right. Turned out that the cams were scored. He says he has seen this before. Due to aggressive programming? I don’t remember. But it sounds somewhat better now.
It seemed like the door drain plugs were…plugged. There was water pooling up in the door wells when it rained. He found that there were pine needles plugging the drains coming from the sunroof. Which is kinda weird because I (thought that) I always close mine.
When I would back up, there would be a “boink†noise under load, he replaced the sway bar links and it doesn’t do it now.
The rear seat would not fold down. There are 2 screws that are under the rear deck (inside) that were loose, tightened up.
Bad driver’s side seat switch, replaced.
The fake-ass faux CF B-pillars were fading, (have seen this a lot), replaced.
Replaced pass. side windshield washer, was leaking.
Oh yeah, he found 2 leaks that I hadn’t seen, in the rear diff and in the oil pan, replaced the seals.
OK, that is enough for now, I think… Sorry for the cross posts, but I wanted to reach as many people as possible with my questions.
Thanks for any input.