Archer1005 Posted December 7, 2021 Report Share Posted December 7, 2021 Hello, Peugeot fans! I’m new to this forum, but not to Peugeots. Joe (91MR2) reached out to me, out of the blue, from seeing an old post of mine regarding my Mi16…and we have since been sharing 405 stories/info. All good. Been reading a number of CanAm posts lately and it’s clear I need to join the group. I’ll kick things off w/ an issue my 36K mi. 405S is exhibiting; the cold weather-incited appearance of the dashboard-energized, yellow-colored ABS warning light. It was intermittently showing up after a summertime brake bleed flush, whereby I’m certain air entered one of the lines. I later re-flushed the lines and the light disappeared. Now that Winter has landed, the light is energized full time. The car is not driven as much as it should be. Plus, the car has its original brake lines. I suspect a potentially failing condition of one of these lines may be creating an ABS system sensor to read a problem. Has anyone experienced such an issue? Quote Link to comment Share on other sites More sharing options...
Bean Posted December 7, 2021 Report Share Posted December 7, 2021 Welcome to the forum Archer1005! I don't know anything about the 405's ABS system, but the light has to be the result of either an open circuit, or a closed circuit - there's not much that a sensor can actually pick up on that I can think of, but it can also be as simple as worn brake pads... Even way back in the 504 Peugeot had wires in the pads and when they grounded against the rotor it would illuminate a light on the dashboard. My 505 has the same system - Could be the 405 does and it's just illuminating the same light? Otherwise there would have to be something like low pressure or some sort of failure for the light to illuminate - maybe a wheel sensor is dirty and not picking up a signal? Or a wheel sensor wire has broken? Very nice low mile 405 BTW - is it auto or manual? Rabin Quote Link to comment Share on other sites More sharing options...
Archer1005 Posted December 9, 2021 Author Report Share Posted December 9, 2021 Hi, Rabin. It’s an auto. I bought it from an estate sale prob. 10 years ago w/ 3.5K miles on it. It now has 33K. Prior owner allowed it to sit outside for a number of years. So, unfortunately, interior got wet when sunroof drain tubes got mice-chewed. Seller knew the condition but lied to me. I bought the car for $3500 thinking all was well. But, soon discovered the issue and spent several weeks disassembling and cleaning entire interior, down to the metal. A slight musty odor remains on humid days, now. Otherwise, a very clean car throughout. That’s one way to get introduced to how a 405 interior is put together. Understood on “open” circuit or a dirty wheel sensor being the cause of the lit “Anti-lock” light. It may be I created a wheel sensor disturbance when working on the fluid change, more than likely. Thanks for your input. I have additional Peugeots, btw. White ‘89 DL w/ 215K from new; my first Red/orange ‘91 Mi16 w/ 76K mi bought from enthusiast in California Gray ‘91 205 Look w/ 12K km bought from orig. owner living in Canada, who brought it over from Germany (his prior living location) Quote Link to comment Share on other sites More sharing options...
Goce Posted December 19, 2021 Report Share Posted December 19, 2021 Peugeot used couple of types of ABS system on the 405. Take a picture of the engine bay so see which you have. I've had intermittent problems with the abs on my MI16x4 because there was corrosion on the power plug going to the pump. Also the ground cable can corrode and seems to not work when you need it the most. Quote Link to comment Share on other sites More sharing options...
Archer1005 Posted December 31, 2021 Author Report Share Posted December 31, 2021 Thanks, Goce, for sharing your troubleshooting experience; corrosion being the culprit. I inspected the ABS system multi-pin harness connector terminations. Unplugged it and everything looks well/clean. No sign of corrosion. Nonetheless, I sprayed the female side of connector with a bit of electrical contact cleaner and plugged/unplugged several times. We'll see, but I doubt this cleaner spray will resolve the issue. Of course, can't hurt, either. I will find out soon. But, I'm in limbo, waiting for the return-arrival of my fuel injectors I 'mailed out' for ultrasonic cleaning. Reason being, I was consistently experiencing/developing hesitation/firing-cut-out at higher speeds. Makes me think injector(s) have a compromised spray pattern. In an attempt to rule out causes, I first performed a tune-up; replaced plugs, wires, rotor/cap. Also cleaned throttle body and butterfly-operating throttle plates. No change. So, I have to believe it's the result of compromised-spray-pattern injectors. I'll soon find out. Should receive cleaned injectors within another week. Fyi, the sat unused for several years prior to me buying/acquiring. Oh, also, I replaced underside-located fuel filter as well. Process of elimination....is in process. Quote Link to comment Share on other sites More sharing options...
Archer1005 Posted December 31, 2021 Author Report Share Posted December 31, 2021 Oops... I meant to type: "the car sat unused for several years...." Quote Link to comment Share on other sites More sharing options...
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