woggy
Member
Name: Paul
Age: 47
Location: Altoona, Florida (Somewhere in the ocala national forest)
Joined: 2009-04-28
Post Count: 158
Contribution: 514
Integrity: 3
 |  Subject: 95 riviera no injector pulse  Tue Apr 28, 2009 2:18 pm | |
| Thanks for this wonderful site, very good reads. and alot of them! I have no injector pulse on my 95 riviera 3.8 sc, The injector fuse is good and has power. I do have 12v at injectors when key is on. And injectors all read 14.2 ohms across injector terminals. Noid lights do nothing when cranking. Car has 35psi fuel pressure at the rail. Good spark (5.69 -5.73 ohms across each coil pack) and good compression also. Any help troubleshooting this problem would be appreciated. |
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deekster_caddy
Addict
Name: Derek
Age: 37
Location: Reading, MA
Joined: 2007-02-01
Post Count: 4446
Contribution: 3570
Integrity: 28
| | Subject: Re: 95 riviera no injector pulse Tue Apr 28, 2009 4:20 pm | |
| I would suspect a crank or cam sensor, but you can also try a used PCM first. I have heard of OBD-I computer failures... Not sure if the '95 Series 1 has both crank and cam sensors, I know the Series 2 engines do. _________________ '98 Buick Riviera; Gen V 3.25 pulley, N*, VS Cam, 180 stat, Custom PCM (Powrtuner), headers & HF cat , 42.5 lb inj. Grant-built/PRJ/Thrasher trans 3.29 gears, 7/8 chain, zzp hardened IS  |
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Karma
Enthusiast
Name: Andrew
Age: 25
Location: Ontario, Canada
Joined: 2008-01-14
Post Count: 640
Contribution: 1071
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| | Subject: Re: 95 riviera no injector pulse Tue Apr 28, 2009 11:07 pm | |
| dunno if its related at all or not, but your fuel pressure seems a bit low, the series one should have key on, ignition off, 40-48 psi. idle should be 41 psi min.. and around 42-44 psi when you pull the vacuum line off the fuel pressure regulator at idle. _________________  |
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deekster_caddy
Addict
Name: Derek
Age: 37
Location: Reading, MA
Joined: 2007-02-01
Post Count: 4446
Contribution: 3570
Integrity: 28
| | Subject: Re: 95 riviera no injector pulse Wed Apr 29, 2009 1:18 pm | |
| 35 PSI is more than enough to make the car run, though, but he's not able to measure with the engine running yet... _________________ '98 Buick Riviera; Gen V 3.25 pulley, N*, VS Cam, 180 stat, Custom PCM (Powrtuner), headers & HF cat , 42.5 lb inj. Grant-built/PRJ/Thrasher trans 3.29 gears, 7/8 chain, zzp hardened IS |
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BillBoost37
Enthusiast
Location: Enfield CT
Joined: 2007-11-28
Post Count: 767
Contribution: 911
Integrity: 15
| | Subject: Re: 95 riviera no injector pulse Thu Apr 30, 2009 8:05 am | |
| Series 1 motors did have both cam and crank sensors. 94/95 pcms were known to have a high failure rate when compared to other years. _________________  97 Bonneville SSEi: .579" and .592" lift. |
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