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1996 rt/10 elect/fuel problems

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1996 rt/10 elect/fuel problems
Old November 2nd, 2011, 08:58 PM   #1
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1996 rt/10 elect/fuel problems

After the car warmed up it seemed as if it wouldn't run over 3500 toms seemed as if it just cut off the rpm guage goes to 0. I pushed in the shcrader valve on the top of the fuel tail and didn't seem to have much pressure when turning the starter it had 0a pressure when turning key on it would have psi. O was told my intermittent problem was 02you sensors so I replaced all 4I new plugs new coils and car when cold runs like a bandit soon as it warms up falls on its face with no check engine light at all?????? Any thoughts out there its got 58000 miles and om frustrated ready to ditch this pos
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Old November 2nd, 2011, 09:13 PM   #2
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I would bet the fuel pump is giving up the ghost, given the loss of fuel pressure. Gets warm, looses pressure. Switch it out and see what happens.

When was the last time you changed out the fuel filter? If it is clogging, it could cause a problem.
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Old November 3rd, 2011, 07:26 AM   #3
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What pressure should I get on the fitting on top or the fuel rail. Right now it doesn't seem to have much pressure. When I bought the car 5 years ago the seller had this same problem and installed a new filler, Stan
strange it only does it after it warms up huh?
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Old November 3rd, 2011, 08:49 AM   #4
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Originally Posted by mstanley View Post
What pressure should I get on the fitting on top or the fuel rail. Right now it doesn't seem to have much pressure. When I bought the car 5 years ago the seller had this same problem and installed a new filler, Stan
strange it only does it after it warms up huh?
Fuel pressure at the test port should be 55psi. Source: 96' RT/10 Service Manual
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Old November 7th, 2011, 09:59 AM   #5
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ok fellas, I installed all 4 co2 sensors, fired the car up new plugs runs perfect when the car is cold. I let the engine run until it warms up and give it throtle it looks like I turned the key off the tach goes to zero, I let off the throttle and the car regains power and runs ok, give it more throttle and it falls again. The voltage meter in the car is pegged, i replace the coil packs and the car runs great for a while and it does it again. My guess is that the voltage regulater must be bad. Can over voltage cause the coils to break down. I believe the coils can break down when they heat up, and when they are cold thay dont, when i put a load on them they break down maybe due to a crack? I cant seem to figure it out, fuel pressure is 55 lbs all the time so its electrical and not fuel related
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Old November 7th, 2011, 10:19 AM   #6
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One of 3 things then. Throttle position sensor, cam sensor, crank sensor. Just my $.02

On the coil packs, could cause the problem, but I have rarely heard fo them being an issue.
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Old November 7th, 2011, 10:27 AM   #7
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I cleaned the throttle positioning sensor, and the throttle bodies too. I have not touched the cam or crank sensors, do they get dirty and give false readings, and what are your thoughts on the cold v/s hot thing? strange how it runs perfect when could dont you think
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Old November 7th, 2011, 10:53 AM   #8
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If they are failing, cleaning won't do any good. You will need to replace them. If you go that route, call Chuck Tator at 914-763-3136, he can fix you up
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Old November 15th, 2011, 10:13 AM   #9
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hello viper fans, I found my mystery gremblan! Seems there is a wire harness under the intake, they wire tied it to a rail and at the back of the engine there is a star tiped bolt resting on the harness, when the engine warmed up the bolt got hot, and when I revved the engine it pushed upward ito the harness and eventually wore off insulation and would ground out the coils! That explains also when i changed the coils it would go away for a while until the harness settled back in place! HA sometimes we thim
nk too much, and find its the simple things we overlook. Thanks for all your help, meanwhile I got new plugs , o2 sensors, wires, its all good, Mark
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Old November 16th, 2011, 01:42 AM   #10
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Hey mark, in the future I would invest in a multimeter and a repair manual.. I'm not a big fan of buying parts that are not broken, it starts to eat a hole in your wallet.
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Old November 16th, 2011, 06:51 PM   #11
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Good find!
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