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 95 riviera sc will not start!!! Thinking of fire bomb soon.

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dwn757
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyFri Apr 11, 2008 10:27 pm

Hello,
I am the new guy today.
Just bought 95 riviera sc...wont start...thinking of fire bombing this thing because...it started twice...dont know why...and now...nothing...checked injectors with noid light...no signal...today.
The car set for 6 months and the guy said it ran great...never any problems.
I get the car...and...it wont start.
Only twice...crank and crank and crank...now nothing.
Someone have any suggestions ?
I am thinking pcm...is this common?
really cool looking car....sure wish i could drive it.
Respectfully
dwn757 headbutt
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'96reese
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Name : Reese
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyFri Apr 11, 2008 10:36 pm

whats happening when you try to start it??? is it a slow start?? can you hear the starter running when you try to start??? is the security light flashing(i have this problem)???
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dwn757
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptySat Apr 12, 2008 11:38 am

Whats happening? It is cranking over at a fast speed as long as the battery is strong...i keep charging it. The security light does come on...but turns off after a few flashes.
No voltage to injectors.
Replaced crank sensor, fuel pump and filter. and almost all of the relays and fuses.
During my various troubleshootings with wires and all other things...it did start...twice. both in seperate situations. But i dont know why.
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AA
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AA

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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptySat Apr 12, 2008 12:13 pm

So you just took this guy's word that the car ran great before buying it? Hope you didn't give very much.

_________________
'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

^^^ SOLD ^^^ frown

'05 GTO • 85k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26
Because fun


'70 Olds Ninety-Eight Holiday Coupe • 116k miles • 455 Rocket V8
Because cool


'95 Celica • 152k miles • 0-60: yes
Because free
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dwn757
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptySun Apr 13, 2008 12:22 pm

No did not give much at all. Now ...looking for some help here.
Hoping someone here has the answer. Something simple just under my nose.
Also..when the car "does" start. It stays running nice and smooth. Plenty of power, shift great. But if you shut it off...it will not start again.
PCM?
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ibmoses
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ibmoses

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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptySun Apr 13, 2008 12:44 pm

Igniton switch, possibly.

If it starts and will run, try not releasing the switch, just let it rotate back far enough to disengage the starter.

Bert tavis
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deekster_caddy
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyMon Apr 14, 2008 7:22 am

Could be a 'dirty' key or connection in the lock cylinder for the security chip reader. Make sure the key in the chip is clean.
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dwn757
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyMon Apr 14, 2008 12:15 pm

OK tried this with the key and the ignition...no luck. But you got me thinking about this vat system with the ingnition switch itself.
Cant seem to find a pcm for a 95..as you all know here and i am learning...much different from 96 on.
I have inspected the wires under the hood carefully ...specific to the fuel injectors...they seem to be fine.
I feel if i could just get some voltage in those wires it would run.
I have checked all the simple stuff...replaced all fuses and relays.
One more note:
During the times (twice) as it was running...the temp gage and traction control did not seem to function properly.
I thank you for all this input...i think you guys have the answer and we are close to makin this baby cruise.
Thank you.
dwn757
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deekster_caddy
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyMon Apr 14, 2008 12:21 pm

I believe the temp gauge has it's own sending unit, and the traction control uses a different computer module than the PCM, so shouldn't be related. TC issues are frequently bad caused by wheel speed sensors, which are built in to the wheel bearing/hub assemblies. 130-150K miles seems to be the average lifespan of the front wheel bearing assemblies.

Can you hear the fuel pump running when you turn the key on? It should prime at first.
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Mr.Riviera
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyMon Apr 14, 2008 1:48 pm

the trac light will also come on for bad CKP sensors. which will also keep the car from starting. you said you replaced it. did you check all the wires going to/from the crank sensor? was the sensor new, and were all the metal tabs on the balancer there?

_________________
1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP
AMG C400 White on black -daily
95 riviera sc will not start!!! Thinking of fire bomb soon. Dsc_0110
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dwn757
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyMon Apr 14, 2008 3:19 pm

interesting the way all this stuff is connected...i will recheck the crank sensor and make sure"how many" metal tabs?
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palermocorey90
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyMon Apr 14, 2008 3:39 pm

this sounds like the same problem i ran in to. i will let you know when my fuel pump gets hear. i think thats the problem
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steve314159
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyMon Apr 21, 2008 2:34 pm

With the ignition switch in start or run, there should be 12 V on the pink wires to each injector. Do you have that? The other side of the injector is pulled low by the pcm to get current to flow through the injector. That side would be about 11 V at idle, 9 V when driving.

If you don't have 12 V to the injectors follow this path: Battery goes to a 60A IGN3 switch under the back seat, to the ign switch via red wire, out of the ign switch via pink wire to the 15A inj fuse on the left side of the dash.

If you do have 12V (when I say 12, I mean whatever the battery is, 12.5, 12.8, whatever) on the injector, measure the voltage drop across the injector during cranking. The drop should be 1 to 3 V at least. If it's zero or less than 1V you can assume that the pcm is not telling the injectors to work. Why not is the next troubleshooting step.
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dwn757
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptyMon Apr 21, 2008 8:49 pm

Very good information and specific.
I will check exactly these wires when i return from out of town next week.
BUT...I did get to drive it a 3rd time...I purchaces a new battery charger and hooked it up..And I hate to admitt this but...I abused the stater switch over and over and over...and it started...as the last 2 times.
Drove the car to auto zone...well, you know the rest with these 95's..Type 2 plug but needs to be read by type 1. No help from them.
I did not turn the engine off. Drove it down the road and noticed something that may have to do with this problem.
The Temp gage and traction control. Temp gage is "off" and sometimes "on" same with traction control.
Now when it comes "on" both...it runs very good....when it goes "off".
It turnes into a weeny car.
Does this information mean anything?
I thank you all for your input.
dwn757
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dwn757
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptySat Jul 19, 2008 3:40 am

UPDATE!!!!
After messing with this 95 Riviera, replacing the fuel pump, filters, relays, crank, cam, throttle...etc...sensors. Finally broke down and replaced the PCM from autozone. $130.00.
Now the car runs as advertised. No trouble lights.
I hope this helps someone out there who has these same problems.
I thank you all for all the informative advise provided here on this site.
I was helpful.
dwn757
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deekster_caddy
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. EmptySat Jul 19, 2008 9:48 am

Congrats! Now you can start driving and enjoying it!!
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95 riviera sc will not start!!! Thinking of fire bomb soon. Empty
PostSubject: Re: 95 riviera sc will not start!!! Thinking of fire bomb soon.   95 riviera sc will not start!!! Thinking of fire bomb soon. Empty

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