I'm the guy driving
the red Italian
Join Date: Oct 2010
Location: United Kingdom
Lambda sensor issue
I have a 1997 TS Spider which has recently had a cambelt kit, balance belt kit and variator replacement. I asked the specialist to run diagnostics to ascertain why the engine management light was on. The engine seemed to run OK except the idling was rough and it stalled occasionally.
They said that the diagnostics showed about 5 problems-lambda sensor, idling actuator, fuel injection, etc. It had them baffled until they found that the 7.5A fuse under the black cover on the bulkhead had blown. Replaced fuse, EML out, drives like a different car- smooth constant idling and no stalling.
The manual refers to this as the Lambda Probe Fuse (S45).
Thing is, the fuse blows nearly every day in 45 miles of driving. I ran out of 7.5s and resorted to 10A - just the same. I now have a good supply of 7.5A ones.
The thermostat was stuck open so I replaced that last weekend.
Advice please- is the lambda sensor duff or should I try the lemon juice cleaning trick before getting a new one?
Or does it just need some Redex and a good blat?