Mercedes-Benz: 190e idle problems - mechanical or electrical ?

The 190 is prone to bad solder joints. The climate control system is a
nightmare. I have a 190D and like it, but repairs can be difficult. do you
have all new ignition components? I havent been on this group in a year or
two so I dont know your history.
KH

"Alex Hemmerich" <comx> wrote in message
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OK, I looked up your previous posts. Check all vacuum lines for cracks. Does
that thing have a throttle position sensor?
KH

"Alex Hemmerich" <comx> wrote in message
news:bmb5ho$8d2$rz.RWTH-Aachen.DE... 
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Hey, have you been to www.190revolution.net ? I just found the place. They
arent really that Guru like, but they have some info there.
KH

"Kevin in San Diego" <com> wrote in message
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Hi! Thanks for the comment!

Had compression checked today...about 188 psi (13bar) on each
cylinder...almost no difference between the 4
pretty good for 160k miles, right?
so my head gasget job was ok i guess...
now...I left the car with an independant mercedes mechanic an hope he finds
out what my patient has...

in addition I replaced about every temp sensor I could find...got a little
better
the funny thing is, when the car has been sitting through a cold night...the
next mornung it runs pefekt for about 10 minutes...it starts on the first
quarter of a crank (and it was no warmer than 30°F last night)
then the engine shakes start....that's why I thought of some temp sensors
problem....

I checked fuel pump, fuel pump relais and engine control unit...found no bad
wires, yet
wish me luck here!

my guess would be the EZL ignition unit, right before the distributer...or
maybe ignition coil...
I'll wait an see what he says...will kepp you informed...
if any of you have any additional ideas....I'll appreciate you sharing them.
Alex

"Kevin in San Diego" <com> schrieb im Newsbeitrag
news:C83jb.77979$.. 
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Alex Hemmerich wrote: the funny thing is, when the car has been sitting through a cold night...the
next mornung it runs pefekt for about 10 minutes...it starts on the first
quarter of a crank (and it was no warmer than 30&deg;F last night)
then the engine shakes start....that's why I thought of some temp sensors
problem.... Just by this problem (not finishing reading all your postings yet), it MAY be an air leak from the intake.&nbsp; Remember that a cold start has enriched fuel coming in.&nbsp; When engine warms up, the control unit decides to use normal fuel volume.&nbsp; However, the air leak causes too much air so the mixture becomes too thin.&nbsp; To prove this point, you need to fake the temp sensor (there are many and you need to find out exactly which one feeds to the control unit) to make the control unit 'thinks' it's an cold engine.&nbsp; To find out the air leak, use carburetor cleaner or starting fluid to spray around air passage.&nbsp; Engine runs well when sucking such fuel, instead of air.&nbsp; But be careful not to have any spark.&nbsp; Good luck, and let us know what the answer is.

ok...he called...I picked up the car...guess what he said...spark wire in cylinder 1 had a defect !!!

I PAYED 170 DOLLARS to my mercedes dealership for him to tell me that my head gasket blew...and ignition is fine....and it must be the head gasket....he had the car one complete day!!!

then I bring it to an independant mechanic...he fixes my car for 30 bucks in no time....

this is just making me mad. good thing is...I have got a brand new gasket now and a perfektly fine 190E.

I can tell you this...this mercedes dealership will never see my car again, nor any of my money.
thats just a shame...I guess they cant fix cars anymore...where there issnt a nice diagnosis plug where you can hook it up and the car tells you what its got....

ok...but thanks for all your help!
i am glad, that it was just this wire...usually I find these things myself, but did not bother, because I payed allready to have some "professional" to look for it...

Alex
"Wan-ning Tan" <com> schrieb im Newsbeitrag news:com...
Alex Hemmerich wrote:
the funny thing is, when the car has been sitting through a cold night...the
next mornung it runs pefekt for about 10 minutes...it starts on the first
quarter of a crank (and it was no warmer than 30°F last night)
then the engine shakes start....that's why I thought of some temp sensors
problem....
Just by this problem (not finishing reading all your postings yet), it MAY be an air leak from the intake. Remember that a cold start has enriched fuel coming in. When engine warms up, the control unit decides to use normal fuel volume. However, the air leak causes too much air so the mixture becomes too thin. To prove this point, you need to fake the temp sensor (there are many and you need to find out exactly which one feeds to the control unit) to make the control unit 'thinks' it's an cold engine. To find out the air leak, use carburetor cleaner or starting fluid to spray around air passage. Engine runs well when sucking such fuel, instead of air. But be careful not to have any spark. Good luck, and let us know what the answer is.

Im glad its over for you. Im still in repair hell. I have the unfixable climate control system.
KH

"Alex Hemmerich" <comx> wrote in message news:bmm3t1$t5s$rz.RWTH-Aachen.DE...
ok...he called...I picked up the car...guess what he said...spark wire in cylinder 1 had a defect !!!

I PAYED 170 DOLLARS to my mercedes dealership for him to tell me that my head gasket blew...and ignition is fine....and it must be the head gasket....he had the car one complete day!!!

then I bring it to an independant mechanic...he fixes my car for 30 bucks in no time....

this is just making me mad. good thing is...I have got a brand new gasket now and a perfektly fine 190E.

I can tell you this...this mercedes dealership will never see my car again, nor any of my money.
thats just a shame...I guess they cant fix cars anymore...where there issnt a nice diagnosis plug where you can hook it up and the car tells you what its got....

ok...but thanks for all your help!
i am glad, that it was just this wire...usually I find these things myself, but did not bother, because I payed allready to have some "professional" to look for it...

Alex
"Wan-ning Tan" <com> schrieb im Newsbeitrag news:com...
Alex Hemmerich wrote:
the funny thing is, when the car has been sitting through a cold night...the
next mornung it runs pefekt for about 10 minutes...it starts on the first
quarter of a crank (and it was no warmer than 30°F last night)
then the engine shakes start....that's why I thought of some temp sensors
problem....
Just by this problem (not finishing reading all your postings yet), it MAY be an air leak from the intake. Remember that a cold start has enriched fuel coming in. When engine warms up, the control unit decides to use normal fuel volume. However, the air leak causes too much air so the mixture becomes too thin. To prove this point, you need to fake the temp sensor (there are many and you need to find out exactly which one feeds to the control unit) to make the control unit 'thinks' it's an cold engine. To find out the air leak, use carburetor cleaner or starting fluid to spray around air passage. Engine runs well when sucking such fuel, instead of air. But be careful not to have any spark. Good luck, and let us know what the answer is.