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Matt
Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 21727
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Vauxhall corsa d 1.3 cdti engine limp mode comes on when i

Customer Question

vauxhall corsa d 1.3 cdti engine limp mode comes on when i rev high in the car
Submitted: 1 year ago.
Category: Car
Customer: replied 1 year ago.
if i switch of engine when in limp mode it goes ok then for a while
Expert:  Matt replied 1 year ago.

Hello

if its going into limp home then you should be able to read a fault code off it ? this would help point to the issue?

as its temporarily solved by switching the ignition off an on again then this sounds like an electrical actuator or sensor at fault .Usually when you can cycle the ignition key on / off and then restart the engine and the fault is gone temporarily this indicates that this is an electrical component causing this issue.

This could also be a wiring issue as things tend to expand when hot and its possible a poor or partial electrical connection is being pushed apart on one of the major sensors so check the connection plug and wiring to the following;

Airflow meter

Crank position sensor

Cam position sensor

O2 sensor

Throttle pedal position sensor

Also worth checking the connections to the fuel pump for the same reason - unplug each in turn and give them a good squirt of switch / contact cleaner - Not WD40

and also unplug and inspect the main power relays and fuses for signs of overheating or corroded terminals - so the ones for the ECU and the fuel pump