Patient: 1988 5kq Intermittant start

[John Gourley]

Thanks for the idea Kneale.  I knew i forgot something when I was listing
the recently installed new parts..........also replaced the cold start
valve, the multi-function sensor and the temp sensor (to the ecu)
I do realize a new part can be defective.....chased that problem during my
years as a VW & Toyota tech, before retiring!

thanks again for the idea

John

On Tue, Jun 10, 2008 at 10:54 AM, Kneale Brownson <knealeski at sbcglobal.net>
wrote:

> Cold start valve sticking???
>
>
> *John Gourley <azaudi at gmail.com>* wrote:
>
> >Patient: 1988 5kq
>
> >Problem: Intermittant start
> >Engine will crank, but not start.
> >Sometimes, you can hear the engine 'cough' as you turn off the
> >ignition switch from Crank to Run.
> >Turn key off and on again, and it starts right up.
>
>
> Was there a solution for the above problem, which was posted a week or so
> ago? If so, I missed it.
>
> I've been having a similar situation with my 91 100 front wheeler, stock NF
> engine. I am experienced a similar thing....not wanting to start up after
> warmed up. The degree of warm up doesn't seem to matter that much, whether
> barely warm or running for 2 hours. The problem seems to be mostly within
> the first 15-20 minutes after being shut down, with the sooner after being
> shut down and then trying to start is the worst
>
> I have checked residual pressure..........it holds to specs.
>
> The car has been parked for a year or so, and with everything being
> original
> on the 130,000 mile car, I decided to go ahead and replace components (the
> car is nice enough to warrant new parts)
>
> So new within the last week.............injectors, throttle position switch
> (checked out bad on the full throttle position), fuel pump check valve,
> spark plugs, air filter, fuel filter
>
> I did not replace the fuel accumulator or the fuel pressure
> regulator....but
> again, residual pressure is good.
>
> Puzzling why, after trying to start and it doesn't, I turn the key off and
> immediately back on and without fail it starts
> immediately.......................almost as if by turning off the key and
> right back on, it is resetting something.
>
> thanks for any thoughts or ideas.
>
> wish the car worked as good as my trusty old 89 200TQA!
>
> John Gourley
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