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95 Oldsmobile Silhouette no start check engine light blinking
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fghj4567
New User
Oct 11, 2012, 12:46 AM
Post #1 of 2
(1921 views)
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95 Oldsmobile Silhouette no start check engine light blinking
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Please excuse my grammar I am VERY tired, lol.
Van has about 160k miles.
Have been having problems intermittently with it since day one when it was bought a few years back.
This is a background of sorts:
Sometimes the car is perfectly fine, other times it will misfire/hesitate/act like it does not want to go and other times it will accelerate on it's own. Stalls at red lights and occasionally while driving. Sometimes the interior/headlights dim while this happens. During these problems I always see the battery voltage meter jumping up/down. We replaced the battery and no change.
The BIGGER problem:
When I go to start the car I turn the key to on and my check engine light blinks rapidly in time with a ticking noise..(turns over fine) when it happened in the past I had someone more slightly more mechanically inclined than myself say the ticking noise was coming from the relay with the fuel pump? as it stopped when that fuse was removed. fuel pump kicks on fine. I was thinking to replace the relay however that day new spark plugs and plug wires were installed and the ECM was taken out and checked visually and the connectors cleaned and rehooked back together and the van ran with ZERO problems for quite awhile.
Is replacing the ECM a good idea? or is there something else I should be checking for before I throw that much down the drain? Honestly any starting point would help now.
I have found suggestions online of where to check for each of these occurring on their own but nothing of them occurring all together, could I have multiple problems against me?
I am struggling financially at the moment which is why I am online instead of a mechanic. I just need to be able to get back and forth to work at this point...
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Oct 11, 2012, 4:12 AM
Post #2 of 2
(1873 views)
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Re: 95 Oldsmobile Silhouette no start check engine light blinking
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Basics for all crank no start are here locked to chase down what you are missing........
http://autoforums.carjunky.com/...LL_NOT_START_P75655/
OK - Vehicle is not doubt stuck at you home or away from more help so you may be limited as to what you can do or check. Try to determine if it lacks fuel DELIVERY or spark. You may hear fuel pump but still need to know if injectors are delivering fuel and doubt it based on fuel pressure or they are not getting the signal to spray fuel.
The clicking from fuel pump relay is interesting but not conclusive of anything. unplug it, check connections and even just tap on it may make it work IF THAT IS THE problem and not a result of something else.
Back to the bouncing battery voltage? Eh - vehicles gauge may not be so accurate but dimming headlights noticed is a strong clue it isn't all wrong. Vehicles need to operate within correct voltages or things go wrong. That is regulated inside the alternator on most GMs I know of. CONNECTIONS EVERYWHERE concerning battery at battery and each cable on to the ends - pos to starter, neg to block but doesn't end there. Grounds must be good all over the place. Those usually braided straps engine block to body and other places throughout count.
GM side post battery cables are historically a problem frequently unseen corrosion under the rubber covers - eyelet there could be about gone however plain cranking engine should be the first failure without enough amps getting thru.
You've already had improvement cleaning up ECM connectors so I'm not trusting a lot of others about now either.
A good code reading is in the cards as soon as you can. 1995 was mostly OBDI but some were OBDII -- that could be a problem to get codes?
Try with what you have to rule things out. Spray some carb cleaner or starting fluid in throttle body, assemble the air delivery parts and see if it will fire up if for only a second or two. If so you aren't getting proper fuel so that is where to concentrate,
T
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