mysterious starting problem

stevanom · 10-21-2006, 04:34 PM

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.

10-21-2006, 04:34 PM	#1
stevanom Stock Join Date: Oct 2006 Location: Kalmthout Belgium Posts: 11	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

10-23-2006, 07:33 PM	#2
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	there is a cold start sensor you might look at and a cold start fuel injector __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

10-24-2006, 02:25 AM	#5
damdog05 12psi boost Join Date: Apr 2006 Location: Georgia Posts: 250	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. __________________ My cars: 85 Trans Am- Ehhh- Gone 83 Rx7- Much Better- Gone 86.5 Supra- Love- Not Gone

10-24-2006, 02:48 AM	#6
burton51m Lexus & 550's Join Date: Feb 2006 Location: Canton, OH Posts: 536	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? __________________

11-14-2006, 08:50 PM	#8
burton51m Lexus & 550's Join Date: Feb 2006 Location: Canton, OH Posts: 536	i figured my problem out too....my cam gears had an extra washer in one of them and it was making everything weird. __________________

10-23-2006, 07:51 PM	#3
stevanom Stock Join Date: Oct 2006 Location: Kalmthout Belgium Posts: 11	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

10-23-2006, 07:53 PM	#4
brandonsupra Stock Join Date: Aug 2006 Location: BC Canada Posts: 26	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.

11-14-2006, 08:24 PM	#7
stevanom Stock Join Date: Oct 2006 Location: Kalmthout Belgium Posts: 11	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!

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