Motor läuft nicht?

Hi Juan,

all of the above facts I mentioneed are important. Once my car ffailed due to a bent fuel hose which jacked fuel pressure up. And a disconnected engine temp sensor increases fuel amount to triple.

A continuously spraying cold start valve can also make idle-run mixture far too rich. As you had your MAP sensor repaired and tried 2 ECUs, it must be one of the reasons above. Air intake temperature sensor is peanuts compared to engine temp sensor. It only increases mixture by 18%. That is why I did not mention it.

Get your mechanic my checklist. jetronic.org/en/d-jetronic/checklist

Hans-Jürgen wrote: Hallo Volker,
Entschuldigung das ich mich hier einmische. Wenn ich die Texte richtig verfolgt habe wird der Sprit immer für zwei Zyl. in das Saugrohr eingespritzt.
Funktioniert jetzt ein EV nicht, reicht auch die Spritmenge nicht für die Zündung des zweiten Zylinder. Oder ist das Saugrohr unterteilt ?
Oder ist dies eine dumme Frage ?
Hans-Jürgen

Das Saugrohr ist unterteilt.

Hi Norbert,

The mechanic has performed the coolant test. he says the sensor works fine. the value he read was somewhere in between the values as the temperature was in between the incremental values mentioned in your mail.

on the other hand I did not understand why resistors be attached to simulate the sensors?
Is it to test the ECU?

Hi Juan,

did the mechanic measure on the ECU connector withdran from ECU? It is not enough to measure on sensor itself as cable problems could still cause a problem.

Using defined resistors only makes sense if your temp sensors is under suspicion to deliver wrong values.

And what about fuel pressure? And what is intake manifold vacuum level on engine in idle-run?