fault code 41
#11
06-21-2021 | 04:58 PM
Administrator
Joined: Apr 2010
Posts: 82,818
Likes: 3,435
From: Clayton MI
Here's why, at least from what I'm reading in the Haynes and the 1990 Chrysler Van manual - the VR on the PCM is 1992 and later models. There is a VR on the SBEC (ECM) 1988-1991 which is used with Chrysler alternators. Older models have an external VR mounted next to the ECM.
The Nippondenso which is the default alternator, has its own VR internally integrated. and doesn't rely on the onboard or an external VR.
That's what I've gathered.
My rookie opinion is that it's not the VR. If the VR was out, we'd see voltage out of range which would kick code 46 or 47. Incompatible alternator? I kinda doubt it but hey...
There is also the issue of the bad throttle bodies from this year which causes a hard hot start and rough idle, and it makes the system run in open loop mode. This has an effect on the electrical system.
know that mine runs about 14.2 but on a hot start, it stays at 13.7 and gets reduced fuel economy. I've a speedo that reads volts on the 12v line in real time, so I see it whenever I drive.
The Nippondenso which is the default alternator, has its own VR internally integrated. and doesn't rely on the onboard or an external VR.
That's what I've gathered.
My rookie opinion is that it's not the VR. If the VR was out, we'd see voltage out of range which would kick code 46 or 47. Incompatible alternator? I kinda doubt it but hey...
There is also the issue of the bad throttle bodies from this year which causes a hard hot start and rough idle, and it makes the system run in open loop mode. This has an effect on the electrical system.
know that mine runs about 14.2 but on a hot start, it stays at 13.7 and gets reduced fuel economy. I've a speedo that reads volts on the 12v line in real time, so I see it whenever I drive.
