Hi all

Own 1.3 MPi Felicia, cars lacks acceleration when cold, doesn't stall, just seems to run poorly, idle seems okay. When warm runs perfectly. Thought it might be thermostat which was u/s anyway so changed it last weekend, temp gauge now working so was obv no good, but still have the same issue. Any ideas what to try next guys?

Many Thanks

The most common culprit is the coolant temperature sensor misreading, dont rely on the gauge either, the sensor has 2 completely independent circuits inside the same unit, one feeds the gauge and the other feeds the ecu, it's not uncommon for just one to have failed or be completely out of range.