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Matt
Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 20576
Experience:  BEng hons Mech engineering, in auto industry 22 years
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When I turn key in ignition there is a hesitation before ignition

Customer Question

When I turn key in ignition there is a hesitation before ignition engages
JA: Sometimes things that you think will be really complicated end up being easy to fix. The Mechanic I'm going to connect you with knows all the tricks and shortcuts. What kind of car is it? Toyota, Honda, Ford, Chrysler, etc.
Customer: Jeep wrangler Sahara 2007
JA: Got it. What model and year?
Customer: Sahara 2007
JA: Tell me a bit more about what's going on so he can help you best.
Customer: There is a hesitation before ignition engages
JA: Are you hoping to fix this yourself?
Customer: Yes
JA: Great! What have you tried so far?
Customer: Nothing
JA: Is there anything else important you think the Mechanic should know about your Jeep?
Customer: There is a red lightning bolt that comes on once in a while
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mechanic about your situation and then connect you two.
Submitted: 6 months ago.
Category: UK Car
Expert:  Matt replied 6 months ago.
Hello I'd 1st check that the main battery cables are on tight and the terminals are clean and bright. Do the same for the engine / gearbox earth strap.Then follow the main positive lead back to the engine and down to the starter motor, and check the connection at this end as well.There should also be a small wire to the motor which should have 12V when you're turning the ignition switch to crank. If the 12V isn't there, check back along this wire for damage to the insulation or corroded connections This 12V feed comes directly from the ignition switch so this may be faulty and need replacing Check the resistance of the main positive lead that runs down to the motor as anything more than a few ohms and it should be replacedDon't forget to try a jump start from another car / battery as its possible the battery is poor, if you have a voltmeter a healthy battery should read 12.7+V also try substituting the battery for another as I've known a very flat battery to drag down the system voltage too far even with jump cablesone other thing to consider is that the immobiliser is faulty and preventing the starter from being enabled - however if the dash / ignition lights are on then this usually means that its offIf this is all OK then its possible the car needs a new starter motor

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