whiteivory

iTrader: (4)

Hi all,

I'm a fairly new member on this board, and am dying to find out what the problem is...

The vehicle in question is none other than my JDM Toyota Celsior 1990. She always had a hard time cranking over, especially during cold weather, so I've decided to give her a tune-up.

Told my mech to swap out the wires and change the spark plugs, but when we started to car, she was idling rough and seemed to be misfiring.

Now we did everything; replugged the old spark plugs, with the old wires, check for vacuum leaks. To no avail. She's being towed to a mechanical school tomorrow morning for further assistance.

But before we give up, I had the thought that maybe the firing order would be different on the JDM Celsior from the USDM LS400.

Can anyone give us any further insight?
She's been out of commission for almost 3 weeks now

LiCelsior

iTrader: (32)

firing order on most japanese cars are almost all the same. check to see if the MAF sensor is working correcting. also check the ignition coils too.

PureDrifter

iTrader: (10)

sounds like someone set the timing off.

LiCelsior

iTrader: (32)

but after new plugs and wires it was running rough? that mech must be really stupid if he messed with the timing when changing plugs.

was it misfiring or rough idling before u changed the new plugs and wires?

whiteivory

iTrader: (4)

How do you set the timing off?

It's now running rough AFTER new plugs and new wires. I don't think that plugs or wires are to blame, so something must have happened between the time I dropped it off to him touching the car.
And she was smooth sailing prior to the "tune-up". I guess I should've went by the old adage if it ain't broke, don't fix it.

python

iTrader: (4)

u dont set the timing off, timing is done by the crank sensor, also the firing order is right on the cap, u cant go wrong, the caps have numbers that are circled or not circled depending on which bank u have them on....i would do an ohm check on the coils,ill bet u have a bad one

LiCelsior

iTrader: (32)

also check that the plug wires are are snuggly on the distributor cap and on the spark plug themselves.

whiteivory

iTrader: (4)

I'll get you guys some news on how it goes.

Thanks for all of your inputs.
I'm hoping to get her back soon..

PureDrifter

iTrader: (10)

i meant that IF you had work (tb/wp change) done recently it would be like the belt skipped a tooth or was set wrong.

look at the coils/ignitors

Kingsoup

The Celsior is identical in the 1UZFE dept. to the US car as I've been led to believe.
Good luck! do all the basics, pull codes, see what it reveals! My car starts like a champ in -40 still, yours should to!

whiteivory

iTrader: (4)

UPDATE 02/19

Just got it towed to a mech school close to here, and turns out I got not only one, by two sets of bad wires.

Getting a new set, and hoping that will solve the issues..

Kingsoup

w00t! good stuff! you'll be fixed up in no time! its always the little things eh?

whiteivory

iTrader: (4)

Yup. Almost a month with no ride. That's so painful...

whiteivory

iTrader: (4)

UPDATE!

She's purring! bad wire sets was the culprit...