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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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96 r129 sl500 mercedes epc light JA: The mechanics have tons

Customer Question

96 r129 sl500 mercedes epc light
JA: The mechanics have tons of experience in that area. Are those all of the "symptoms"?
Customer: no, engine only revs to @3700 rpm in any gear due to the EPC restricting the performance
JA: What else is going on?
Customer: thats it
JA: Anything else I can tell the Mercedes Mechanic before I connect you two?
Customer: he needs to know his 1996 mercedes very well.
JA: Got it. Let's get this figured out. I'm sending you to a secure page on JustAnswer so you can place the $5 fully refundable deposit now. While you're filling out that form, I'll tell the Mercedes Mechanic about your situation and connect you two. You'll be on the road in no time.
Submitted: 6 months ago.
Category: Mercedes
Expert:  Lou P. master tech replied 6 months ago.
Hello, usually when this happens the asr light comes on as well, is your asr light on?
Customer: replied 6 months ago.
no asr light, no codes
Customer: replied 6 months ago.
have done normal service vac lines, ccv lines, new maf, checked cats, fuel press reg replaced due to leak, new upstream O2's
injector oring, new plugs,
not sure if 96 sl500 has bootstrapping, leaning toward throttle body
tps reads 1.9 idle and reaches 100 full throttle
key on not running 2.3 and 29 same as 97 sl500 I tested so seems etc pedal is ok?
thinking of swapping tbody to test
Customer: replied 6 months ago.
will not go into closed loop, O2's seem to react normal.
@4.9-5.1 g/s mass air
normal idle no miss.
Expert:  Lou P. master tech replied 6 months ago.
ok how soon do you need a answer on this? can i get back to you tonight or tomorrow? if not i will opt out or you can feel free to opt me out, i want to help but i cant be on today as i thought i was going to.
Customer: replied 6 months ago.
feel free to take some time on this tomorrow would be fine
Expert:  Lou P. master tech replied 6 months ago.
ok thanks :)much appreciated, also appreciate the fact you know what bootstrapping means lol. you dont hear that everyday.