The most common reasons a Ford Focus won't start are a dead battery, an alternator problem, or failed starter. 0 %. 38 % of the time it's the. The easiest way to check the IAC , is to turn on the ac. When the compressor clutch. Engages the idle should increase. And vice a versa when disengaged. EDIT: unless it is stuck on high idle like you said all the time. Then clean or replace it Same thing happened to me - start button would very often not start the car on the first few attemps. Sometimes it took forever. I brought car into Ford for this issue and a vibration issue. They ordered a new start button which they thought was faulty, but also installed a new TCM to try and fix the vibration. Posted March 11, 2014. Firstly i hate doing this, ive just signed on to your forum and having to make my first post a question. my dad's 2002 1.25 Fiesta LX has a annoying intermittent starting fault, 2 week's ago it first started doing this: totally dead on the turn of the key, all electric's worked fine & the battery show's enough volt's 2010 Ford Focus SE Ignition Issues. Maintenance/Repairs. ford, focus. Cpt.jcup September 12, 2020, 6:04pm 1. Hey guys, so our secondary car has been giving us a little bit of trouble here lately. Occasionally when you go to crank it, it just doesn’t start. The accessories come on and all the electronics power up, but it doesn’t do anything It will result in starting issues. It can be intermittent starting, a clicking noise from the relay, or an idle vehicle that cannot start. Dirt and debris: This component is usually protected from dirt, debris, and grime by placing it under the dashboard or hood. Over time, debris and dirt will accumulate and affect the functionality of the relay. The 2002 Ford Explorer has 5 problems reported for intermittent starting problems. Average repair cost is $2,120 at 97,000 miles. A faulty MAF sensor can cause all kinds of driveability issues: hesitation during acceleration. lack of power. misfires. surges. The most common problem withthe MAF sensor is dirt trapped inside the sensor, usually around the hot wire. Often, using a MAF sensor cleaner will help restore proper operation. .

ford focus intermittent starting problems