Misfiring Renault Modus

February 09, 2024
Misfiring Renault Modus
Share:

The owner of this 2007 Renault Modus 1.6 was not budgeting for any problems, and so was pretty upset when she came to see me. The engine management light had flicker on and did not go out again. 


The fault code stored, P0303, indicated that the problem was with cylinder 3. As the owners finances were tight, I decided the first move would be to swap the coil packs and spark plugs around between cylinders 2 and 3. This saves replacing parts unnecessarily and will give a good indication of what maybe at the source of the problem.

With the coil pack and plugs swapped round and the codes cleared, the engine was fired up again. The same P0303 code was flagged up. This narrowed the problem down, leaving the most probable reason to be an injector or a wiring fault.

The job to remove the injectors on this engine is just under an hour and a half, but it was worth the trouble. When the injectors were swapped around, a new code of P0302. Once the injector that had originally been in cylinder 3 had been replaced, all was well again.

You can download this story as a PDF, as well as other technical tips at TechTips.ie.

There are lots more Tech Tips to view, and they are all searchable, on TechTips.ie.
PREVIOUS ARTICLE
ePOD technology  elevates the Autopart user experience
NEXT ARTICLE
Tool Saver specials from Laser Tools  

More from AFTERMARKET

Electric cars twice as likely to hit pedestrians

Electric cars twice as likely to hit pedestrians

icon Hybrid and electric cars are m...
Renault Kangoo - Timely water warning

Renault Kangoo - Timely water warning

icon Well aware that it was not a g...
EU buyers switching on to hybrids

EU buyers switching on to hybrids

icon While new car sales may curren...
Fiesta won’t start over one small detail

Fiesta won’t start over one small detail

icon A recent technical call to the...
French road safety campaign urges men to drive like women

French road safety campaign urges men to drive like women

icon Road safety campaigns have to...
Clean up with Sealey Pressure Washer Deals

Clean up with Sealey Pressure Washer Deals

icon Tool and equipment specialist...

More from AUTOBIZ