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K3y41 · 07-09-2016, 02:26 PM

I have a 2004 pace arrow, which I love, however the last couple of trips it has shut down after about 100 miles, start back up in about 5 minutes and run good. After we would generally park. Start back home, same thing would occur. Need some help on diagnosing the problem. I have changed fuel filter and air filter. Same problem occurred on next trip. Help needed.

BFlinn181 · 07-09-2016, 03:50 PM

The more information you provide, the better we can help you. What engine? diesel or gas?

K3y41 · 07-10-2016, 02:31 PM

Quote:

Originally Posted by K3y41

I have a 2004 pace arrow, which I love, however the last couple of trips it has shut down after about 100 miles, start back up in about 5 minutes and run good. After we would generally park. Start back home, same thing would occur. Need some help on diagnosing the problem. I have changed fuel filter and air filter. Same problem occurred on next trip. Help needed.

it is a 454 gas.

BFlinn181 · 07-10-2016, 03:04 PM

Quote:

Originally Posted by K3y41

it is a 454 gas.

That would make it a GM, I guess.

Cutting out could be gas or ignition related. You mentioned changing a fuel and air filter, but are you sure it only has one fuel filter? You might also have 2 fuel pumps, one could be failing. Use a 'T' fitting and put a fuel pressure gauge in the line to see if that's the issue. Also check the fuel lines to see if any show signs of heat or melting from being close to the exhaust. I think you have a return hose on the fuel line back to the tank to keep gas cool. Stalling and starting could be vapor lock from heated fuel.

Ignition issue could be caused by a coil failing under heat. I don't know your engine and whether it has one coil or multiples.

If you use the Google search box on the top right of the page to search for 'GM 454 stalling' you might find more information to help you.

OLYLEN · 07-11-2016, 10:18 AM

How about a gas cap, after a 100 miles 12-15 gallons causing a fuel flow problem because of a vacuum.

LEN

K3y41 · 07-12-2016, 10:41 AM

Quote:

Originally Posted by OLYLEN

How about a gas cap, after a 100 miles 12-15 gallons causing a fuel flow problem because of a vacuum.

LEN

Thanks Len,going to check on a new cap !!

BFlinn181 · 07-12-2016, 11:11 AM

Quote:

Originally Posted by K3y41

Thanks Len,going to check on a new cap !!

Before replacing the cap, when the engine cuts out, immediately loosen the cap. If a giant inrush of air happens, then the gas vapor collection system is faulty. A new cap might not fix that.

A bit more information might help. When it 'cuts out', is it a sudden shut down of the engine or a reduction in power until it stalls? Any signs or symptoms of the up coming 'cut out?'

K3y41 · 07-13-2016, 10:55 AM

Quote:

Originally Posted by BFlinn181

Before replacing the cap, when the engine cuts out, immediately loosen the cap. If a giant inrush of air happens, then the gas vapor collection system is faulty. A new cap might not fix that.

A bit more information might help. When it 'cuts out', is it a sudden shut down of the engine or a reduction in power until it stalls? Any signs or symptoms of the up coming 'cut out?'

It is a reduction in power till it stalls no symptoms at all just going down the road and it starts to stall. Get it off the road cut off check things out and after a few min. It will start back up and runs fine. Thanks, for your help !!

BFlinn181 · 07-13-2016, 11:32 AM

O.K., it doesn't sound like an electrical (spark) issue. I don't like suggesting to buy new parts and replacing them, I'd rather test and determine the problem instead of just installing new components.

I'd next look at fuel flow. It could be a failing fuel pump, but before just replacing it, I'd do as I said and monitor fuel pressure.