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1990 olds 98 regency strange starting problem
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trikemaker
New User
May 6, 2009, 2:25 PM
Post #1 of 8
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1990 olds 98 regency strange starting problem
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hi i have a 1990 olds 98 regency 3.8 liter power everything a/t. i have to spray starting fluid into the throttle body to get it to start this occurs hot or cold every time i start it regardless of temp outside , the car runs great after it starts. i have replaced the fuel pump,fuel filter, fuel lines.checked the vacuum hose to the fuel pressure regulator, that was fine. i am stumped ...HELP please!!!
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autojoe
User
May 6, 2009, 4:03 PM
Post #2 of 8
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Re: 1990 olds 98 regency strange starting problem
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A coolant temperature sensor that is bad can cause this.
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Loren Champlain Sr
Veteran
/ Moderator
May 6, 2009, 5:52 PM
Post #3 of 8
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Re: 1990 olds 98 regency strange starting problem
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trikemaker; You need to check fuel pressure. It may be bleeding off after shutdown, losing it's 'prime'. A quick check would be to turn the ignition switch to the 'on' position, wait a couple of seconds, then turn it off. Wait a minute or so, do the same thing. Then, do it again. Each time you do this, the fuel pump will run for a few seconds, building pressure. If it starts each time doing this, then you are losing pressure, somewhere. Could be a faulty check valve in the pump or an injector leaking after shutdown.
Loren
SW Washington
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trikemaker
New User
May 9, 2009, 3:17 PM
Post #4 of 8
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Re: 1990 olds 98 regency strange starting problem
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loren tried what you suggested car still wont start could it be a sensor somewhere?
(This post was edited by trikemaker on May 9, 2009, 3:23 PM)
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trikemaker
New User
May 9, 2009, 3:20 PM
Post #5 of 8
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Re: 1990 olds 98 regency strange starting problem
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Joe do you know where this might be on a 3.8?
(This post was edited by trikemaker on May 9, 2009, 3:24 PM)
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trikemaker
New User
May 9, 2009, 3:25 PM
Post #6 of 8
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Re: 1990 olds 98 regency strange starting problem
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buy the way thank you all for the help
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Loren Champlain Sr
Veteran
/ Moderator
May 9, 2009, 3:48 PM
Post #7 of 8
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Re: 1990 olds 98 regency strange starting problem
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trikemaker; (autojoe, pardon my jumping in) The CTS is usually mounted near or on the thermostat housing. It will have two wires going to it. The temp. sensor for the guage will only have one wire and no effect on starting.
Loren
SW Washington
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autojoe
User
May 9, 2009, 5:38 PM
Post #8 of 8
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Re: 1990 olds 98 regency strange starting problem
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2wires are (tan)and (black).Check resistance and compare to ambient temp cold/resistance chart.I worked on 1 car with this problem.
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