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-   -   mysterious starting problem (http://www.toyota-supra.info/forums/mkiii-supra/6484-mysterious-starting-problem.html)

stevanom 10-21-2006 04:34 PM

mysterious starting problem
 
Hi, mi 1987 MA70 (no turbo) 3.0 6 cillinder has always started in 2 seconds. Even after five years of inactivity it stated in 2 seconds. NOw I have used it intensely, but quietly for a number of months (while waiting for new company car). I had timing belt, spark plugs and orioginal exhaust system replaced at maintenance in a Toyota garage. About five thousnad kilometers later it began to start worse. It gets worse and worse and now I have to try two to three times for several seconds. When it finally runs it turns smoothly, but stutters during about 5 kilometers when driving. After that for the rest of the day it runs and starts like as usual : like clockwork.
oil consumption not even half a liter in 15.000 kilometers
water level steady
temperature steady as ever
kilometers 205.000
Anyone any ideas? I am getting desperate
Thanks already
Steven

ddmcse 10-23-2006 07:33 PM

there is a cold start sensor you might look at and a cold start fuel injector

stevanom 10-23-2006 07:51 PM

Hey,


Did not even know he had these, but it does sound logic. Any idea where I can locate these under the hood?

Thanks already

brandonsupra 10-23-2006 07:53 PM

Yeah I've got the same problem. It takes about 3-4 seconds before it starts and then stutters as if it wants to stall (only SOMETIMES does it do this, usually when it's really cold...oil issues I think). Oil pressure is high until warm, and idles around 1.5k rpm. But then sure enough after 5 minutes when it's warm she calms right down...idles fine again (under 1k about 800), oil pressure drops to a normal level (around 1). Then so long as I don't leave it off for 5 hours or more it will start on a dime, and all levels are exactly where they should be.

damdog05 10-24-2006 02:25 AM

i have the same problem as well. it takes 2 or 3 tries in the morning to get my car started, but after that it works perfectly.

burton51m 10-24-2006 02:48 AM

i got my bhg fixed and found all this shit not connected(Power steering, Vacuum hose in intake)..n prolly other stuff that i cant find.

but i have noticed that when i push my remote start button it cranks forever(2-3 seconds) and finally makes a loud clunk or click n gives up. it automatically tries to start it agian and it starts right up


it never did this before so could the cold start sensor be the problem?

stevanom 11-14-2006 08:24 PM

Yes! with new spark plugs, new ignition cables and a new delco cap (you know where the ignition cables start from) the car starts like a dream again.

On my Celica convertible I had a similar problem but there it was oxidation of the connecting plug on the cold start sensor.

I am a happy man!

burton51m 11-14-2006 08:50 PM

i figured my problem out too....my cam gears had an extra washer in one of them and it was making everything weird.


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