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Old 05-28-2012, 09:30 PM   #1
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454 engine turns over very slow?

Hello,

I could use some help trying to figure out why my engine Chevy 454 turns over very slow and wont start. I had it running a month ago. The battery was dead so I used the battery out of my dodge truck? 840 cranking amps. Could it be the starter? Over time it seems to be starting harder and harder.
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Old 05-28-2012, 10:07 PM   #2
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Quote:
Originally Posted by Rhooper View Post
Hello,

I could use some help trying to figure out why my engine Chevy 454 turns over very slow and wont start. I had it running a month ago. The battery was dead so I used the battery out of my dodge truck? 840 cranking amps. Could it be the starter? Over time it seems to be starting harder and harder.
What year is it ? Does it it occur when cold, or only after it's been running ? There are a few things it could be. From my experience there are a few things you will want to check... Check your terminals on the battery. Make sure both terminals are clean and put a bit of corrosion inhibitor on them. Also, follow the ground terminal to the chassis and make sure it's clean and tight. There may also be a ground strap between the engine and chassis, again, make sure both ends of it are clean and tight. Lastly, it could be the bushings in the starter that are dragging from wear. If you remove it and take it to an auto parts store they will be able to test it and tell you by the amp draw if its the starter motor or not. Now, if it only occurs after its been running...and its an 80's or early 90's model, the exhaust pipe from the exhaust manifold passes VERY close to the starter and super heats the motor and solenoid, and increases the resistance. If everything else checks out, add a heat shield to the solenoid mounted on the starter... you can buy these already made at the auto parts store in the HELP! section. I hope this may help you !
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Old 05-28-2012, 11:03 PM   #3
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Don't forget the battery cables, they "wear out" over time. Actually the wire corrodes inside the terminals which creates a huge amount of resistance. If you cut off a terminal and the wire is blackened, cut the cable back until you expose bright copper wire, then attach a new terminal. It is best however to just replace the cables because usually they are just barely long enough anyway.
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Old 06-01-2012, 07:07 AM   #4
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Pull the starter and overhual it, or replace it. That should take care of the problem.
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Old 06-01-2012, 09:55 AM   #5
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I agree with Ray. Replace the cables. I have seen cables that looked good that wouldn't turn on the dome light. Cables are much cheaper than overhaul/replace starter and you probably need them anyway.
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Old 06-01-2012, 11:36 AM   #6
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Quote:
Originally Posted by Rhooper View Post
Hello,

I could use some help trying to figure out why my engine Chevy 454 turns over very slow and wont start. I had it running a month ago. The battery was dead so I used the battery out of my dodge truck? 840 cranking amps. Could it be the starter? Over time it seems to be starting harder and harder.
As an old retired cross country truck owner, I would agree with about all the advise you have been given. However nobody suggested putting a load test on the battery. Chances are this is not the problem since you used a different battery, but still a place to start. Just because a cable looks ok and is tight, does not mean it has a good connection. Use steel wool or sandpaper on the ground connections, then smear some electrical grease. All this should be done prior to removal and replacement of the starter, and much cheaper. Even if it does not solve the problem, the preventive maintance will be done. Good wishes from the old trucker.
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Old 06-02-2012, 03:55 PM   #7
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I have a 1989 Winnie Chieftain with a 454...
The 454 power plant will HEAT up the starter, as soon as you shut her off to get a drink & let her set for a few minutes the starter gets really HOT & hard to start until it cools down...
I have read it is a design flaw with the 454 in a MH...
Bob
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Old 06-02-2012, 04:14 PM   #8
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I have a 1989 Winnie Chieftain with a 454...
The 454 power plant will HEAT up the starter, as soon as you shut her off to get a drink & let her set for a few minutes the starter gets really HOT & hard to start until it cools down...
I have read it is a design flaw with the 454 in a MH...
Bob
Really its been a design flaw since the 1949 Ols 88.
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