A place for general chat about the Jimny. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
Suppliers/Dealers or anyone selling with a commercial view in mind CANNOT post here unless responding to a specific request of a member in a "wanted" post.
Suppliers include people "breaking for spares" on a regular basis, when purchasing spares members should ask a supplier what they contribute to the running of the forum particularly if contacted by a Private Message
Suppliers or Members who have contributed to the forum can be identifed by the
logo.
Suppliers/Dealers or anyone selling with a commercial view in mind CANNOT post here unless responding to a specific request of a member in a "wanted" post.
Suppliers include people "breaking for spares" on a regular basis, when purchasing spares members should ask a supplier what they contribute to the running of the forum particularly if contacted by a Private Message
Suppliers or Members who have contributed to the forum can be identifed by the
Jimmy over fuelling. Cat gets red hot. Car runs fine until hot
06 Jun 2025 08:06 - 06 Jun 2025 08:07 #260774
by facade
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
Replied by facade on topic Jimmy over fuelling. Cat gets red hot. Car runs fine until hot
If you just want to fire the parts cannon at it, try the pre-cat oxygen sensor. (The one on the exhaust manifold)
During warm up the engine is running on a pre set map, then when hot it tries to balance the fuelling with the reading from that sensor.
They often go bad and cause overfuelling issues (which fail MOT on emissions as well as drop the MPG, but it is gradual so you don't notice), the EML won't come on until it can't get what it thinks is a sensible reading off that sensor and runs out of fuel trim trying.
Otherwise you are going to have to start reading stored codes and examining live sensor data.
During warm up the engine is running on a pre set map, then when hot it tries to balance the fuelling with the reading from that sensor.
They often go bad and cause overfuelling issues (which fail MOT on emissions as well as drop the MPG, but it is gradual so you don't notice), the EML won't come on until it can't get what it thinks is a sensible reading off that sensor and runs out of fuel trim trying.
Otherwise you are going to have to start reading stored codes and examining live sensor data.
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
Last edit: 06 Jun 2025 08:07 by facade.
Please Log in or Create an account to join the conversation.
Time to create page: 4.400 seconds