Jolyon Palmer will have his iSport car completely rebuilt before the next GP2 rounds in Monaco after a third successive race weekend was blighted by electrical problems.

Since the second round in Bahrain, the 21-year-old Brit has been plagued with an intermittent electrical fault causing the car's engine to cut out - ruining the start to his second season in the F1 feeder-series.

After two frustrating events in the Arab state, the issue once again occurred before the start of the Sprint Race at last weekend's rounds in Barcelona. Jolyon, who had earlier collected his second points finish of the season during the Feature Race, ground to a halt on the warm-up lap, denying him the opportunity for another points finish. The iSport team will now switch to a new car for the next rounds of the series in Monaco which take place on 24-26 May.

iSport boss Paul Jackson said: "It's been another difficult weekend with continuing electrical problems on Jolyon's car, which have proved impossible to identify. The decision has now been taken to build a replacement car for Monaco around a different chassis and engine with all new electrical components. So the team has a busy week ahead, but will re-group in Monaco and hope to put these troubles behind us."

Jackson also praised the efforts of technical staff from GP2 and the FIA, who have helped iSport try to get to the bottom of the problems on Jolyon's car. "We have had support from the people at GP2 and some external help from the FIA technical staff, but all to no avail," he added.

"Monaco is a special event with many good memories and results for us, so we hope to turn our fortunes around in the principality and kick start our season with some strong results."

The next rounds of the 2012 GP2 Series take place in Monaco on 24-26 May with full coverage on Jolyon's official website.