Bosch LE/2 Jetronic (info and problems)

[Rich M]

I've found the Bosch part number for the Croma coolant sensor which the
figures from my previous post refer to:

0 280 130 026

Rich
> -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of Rich M
> Sent: 16 May 2000 10:05
> To: diy_efi at diy-efi.org
> Subject: RE: Bosch LE/2 Jetronic (info and problems)
>
>
> Steve,
> If it's any help, I came across some resistance values versus temperature
> for the Croma coolant sensor:
>  Croma 2000 ie Turbo 1986-90
> Temp                Resistance
> 20°C                2-4k
> 50°C                600-900 ohms
> 80°C                200-400 ohms
> 90°C                100-300 ohms
>
> These do show a bit of spread, but you may be able to make some
> measurements
> at running temperature to see if there's something obviously amiss. If you
> measure significantly higher than 300-400 ohms at running temperature, I
> think this could be a chunk of your problem.
>
> If it's of any help the same chart for the Vauxhall/Opel 1.8L
> (also LE2) is:
> Vauxhall/Opel 1800i 1982-86
>
> Temp                Resistance
> 0°C                  4.8-6.6k
> 20°C                2.2-2.8k
> 40°C                1.0-1.4k
> 80°C                270-230 ohms
> 100°C              200 ohms approx
>
> I would expect the two to be pretty close - the two are specified at
> slightly different temperatures, between the two you may be able to make
> some sense?
> FWIW this data is from a Haynes vehicle data manual.
>
> Rich
>
>
> > -----Original Message-----
> > From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> > Behalf Of Steve Spiers
> > Sent: 14 May 2000 13:19
> > To: diy_efi at diy-efi.org
> > Subject: Bosch LE/2 Jetronic (info and problems)
> >
> >
> > Hi
> > =
> > =
> > How dependent is the ECU on coolant temperature? I suspect that
> > the thermostate is
> > either stuck open or has been removed. The temp gague will only
> > just get off the
> > absolute bottom of the scale. Could this be the sole problem
> > causing the ecu to
> > run in "cold start" mode?
> >
> > Thanks for any help in advance
> >
> > Steve
>
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