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#1
08-01-2008, 12:33 PM
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95 bonnie, bermuda triange
My sister told me her car felt sluggish so I told her to bring it by and it felt normal to me then I noticed it idled slightly rough so I burped the throttle a few times and it hesitated then died never to start again. I originally thought it was timing but I watched the rocker arms as I turned the motor over by hand and there was no play what so ever. It has perfect fuel pressure and good spark. Sprayed starting fluid in it and nothing. Injectors pulsing. Perfect compression too which tells me it's in time. Two times it's tried to start but other than that it just cranks. No codes either. Put a different pcm in and it didn't change it. Never thought I would say this but I'm stumped. Can anyone help? Thanks.
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#2
08-01-2008, 07:23 PM
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Re: 95 bonnie, bermuda triange
If you have injector pulse, sprayed starting fluid, got compression, the cat is not blocked, and strong spark, something in the previous steps is missing, try disconnecting the maf, recheck for strong blue spark, you may have spark but not enough to fire a cylinder under pressure.
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#4
08-06-2008, 03:13 PM
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Re: 95 bonnie, bermuda triange
Got it figured out! The spark plugs were wet but would spark outside of the motor but apparently not enough oxygen in the motor. Put another set of plugs in and fired right up. I have never heard this before but I did some digging and the plastic upper intake has a factory defect where the egr tube is too hot and melts the gaskets. needless to say the the intake was full of antifreeze dumping it straight into the cylinders. The oil never showed any sign of this either. The new intake is 130 bucks at orileys and it comes with a new smaller egr tube. It's all fixed now and thanks to all that helped. Thanx MAX.
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#6
08-06-2008, 06:12 PM
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Re: 95 bonnie, bermuda triange
Quote:
My only question is... Were the Lower intake gaskets replaced when you replaced the upper intake? The Lower gaskets are also very prone to failing on these cars, as well GM has an updated Aluminum gasket design for these engines
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#7
08-07-2008, 07:25 AM
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Re: 95 bonnie, bermuda triange
The old girl now has new oil, antifreezi, and yes, also went ahead and replaced the lower gaskets. She is like a brand new car. She has a hard life. My sister drives 500 miles a week to work. I hope she can hold up a few more years.
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#8
08-07-2008, 05:26 PM
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Re: 95 bonnie, bermuda triange
I have to say as long as you fixed it in time it should hold up... Its when they sit for a while after a failure like that, that it can become an issue..
My car also did this at 80ish k on the clock... I have to admit tho, I pulled the engine at 161,000.... It had wrist pin issues and beat the pistons up... I was nothing short of a terror to my 95 Bonneville... It always had Mobil One, always had 3000k oil changes no matter what... Tranny fluid changes 2 times a year... I expected that motor to blow up before 100,000.... I am to this day amazed it made it to 161,000 with the way I abused the living snot out of it.. I have a good friend that has 185,000 on his 97 Bonneville and to this day the engine runs like new, the trans shifts like new and it never misses a beat... His to had the failure as well... I think your sister will get more out of the car 
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