delayed start

Measure voltage ..resting and starting and running and report back

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I would also check voltage drop when cranking.

If your car is diesel, there are quite a few pre-heating components that do not last forever. A relay made my cold mornings miserables for several weeks...

 

How old is the battery?

 

CCA probably getting too low (on the battery)(cold cranking amps), sounds like it is marginal, best to replace the battery, suggestion: batteries plus (if you have one in your area) they will change it for you and they can test it too before changing, no fee, nice and simple

{and no amount of charging it going to help if CCA is marginal, it means the cells are going bad}

 

I would start with this first. It sounds like a discharged battery. Go with the cheapest and easiest solution first. If the battery is in good condition and is fully charged you can then go into measuring the starter draw (in amps) or voltage drop.

Please note that this is for Ferrari technical discussion and since this thread is about a Toyota I will have to report this thread to the moderators.

 

Never good for extending battery life. One thing beyond the diagnostic voltage measurements that Dominick mentioned would be to measure the parasitic current draw at rest (but since it has been starting after a week of disuse, you probably don't have a serious issue there, but any added electronic stuff might have increased it a little). You may be caught between the trade-off of messing with a battery tender or just replacing the battery more often than is typical.

 

I'm thinking bad battery.
I just took a battery in to NAPA that measured 12.5-13 volts to be tested, they have a tool that can measure CCA and it was only 300 where is should have been 1425 CCA

 

Check the ground too


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Time for a new starter. Might first check and clean the grounds and starter solenoid connection and make sure there is nothing badly corroded. The new battery was probably necessary to rule that out, sometimes batteries going bad can still bench test ok.

 

,+1

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Rob

Unfortunately your description of not turning over let us think the rpm of the engine was slow and 0 for a few seconds .. not that the engine was turning and not starting which would have been a fuel issue

Did I misunderstand..or did the fuel pump issue manifest itself in a weird way

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Pressure test at fuel rail. Check fuel flow. Possible restricted fuel filter.

 

So is the issue?
1- Turn key and no starter spinning right away or
2- Turn key, starter spins, but engine doesn't fire right away?

For #1 - electronic, solenoid, relay would be the likely guess
For #2 - Fuel pump, leaky injectors (if the car sits for a while and then has the issue i would think it could be this), or fuel filter is possible but less likely. Usually a fuel pump going bad will show up at speed before it shows hard starting problems. Could also be a bunch of other electronic stuff as well if the computer isn't getting a signal from something it needs (Crank position sensor) right away

 

I had that happen with a Toyota Sienna. Insert key turn, nothing. Turn back forth and then it would start. The ignition switch had worn out. My mother -in -law had a similar problem with her Buick. Keys had to be reprogrammed and a new theft deterrent module installed. Have you tried different keys?

 

There can also be another switch in the brake/brake pedal system -- i.e., the starter motor won't engage unless the system "thinks" you have the brake pedal pressed down. Don't know if that applies to your particular truck, but many ICEVs have this safeguard.