8t74runner

I'm having a slow start issue when the truck is warmed up. Battery and alternator check out fine. The truck cranks perfect even when it's below freezing outside.

The issue arises when I cut the truck off and try to start it back within about 10 minutes. It barely turns over. The truck has not failed to crank as of yet.

Time for a starter rebuild or possible bad connection?

83Toyota88

iTrader: (1)

Maybe check thermostat?

8t74runner

its good. i mean when the engine is warmed up at operating temperature. it acts like a heat soak issue as its only after ive driven it for a bit.

I was leaning towards a bad ground but i would think that it would do it when it was cold also. Another reason I would lean towards a bad ground is when the truck is idling, if i turn on the blower motor, it pulls the power down so bad it almost stall it out.

89yot

i dont know if this will helpp by my 68 ford does this and come to find out it is the starter getting to warm. does your starter have a heat shield on it if not try putting one on there

OregonCoastGhost

I'm also curious to hear how this pans out. I've had this issue before (with Ford trucks, never Toyotas - although anythings possible). I've wrapped the starter in that heat shield wrap, put in a heavy duty ground wire kit, new starter, full tune up, new battery, et cetera. It still does it. Runs great, BUT, like the original poster said: if it is warmed up, and you turn it off and come back in a few minutes, it has a heck of a time firing up.

Redneck92

Not sure if it will translate from domestic v8s but check the timing, set to high and it will cause hard/slow starts when warm.

RAD4Runner

By turning over, do you mean starter turning engine or Ignition/combustion? While cranking, does starter motor NOT turn at all and all you hear is click? What clicks?

If starter motor tries to turn but groans (struggles), AND you say battery is fine, possible problems are high resistance in battery-to starter solenoid contacts- to starter motor- to ground. Could be solenoid contact (see 4 Crawler's site).

Thermostat does not affect cranking

Don't spend time & money on something unless you're sure it's the cause of the problem.

First-gen starting (cranking) system explained here.

Except that, I believe the 81 does not have a starter relay. Ignition switch contact closes, sends power to coil of starter solenoid. Solenoid actuates, contacts close and send power to starter motor. Also actuates a gear to engage starter and flywheel.


Good luck and Merry Christmas.