Scot

engine hesitation

10 posts in this topic

I have a 2010 Sunesta 224 with the Volvo 5.0 270 hp engine that has a hesitation in the engine at initial throttle and again at cruising speed.  Just replaced the crank position sensor and the cam position sensor at the advice of the local chaparral dealership.  Any advice on other possible causes.  Dealership is recommending replacing entire wiring harness.

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There are so many things it could be. Why does the dealer think the wiring harness needs to be replaced?

brick

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47 minutes ago, brick said:

There are so many things it could be. Why does the dealer think the wiring harness needs to be replaced?

brick

i would be curious as to what diagnostics were done to come to that, did they scan it, were basic things checked.

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18 minutes ago, soldier4402 said:

i would be curious as to what diagnostics were done to come to that, did they scan it, were basic things checked.

Agree, they have already got you to throw sensors at it needlessly.  You can randomly replace parts yourself, why do you need to pay a "tech" dealer rates to do the same?  

Proper review of all the data generated by the engine sensors by a qualified person when the engine is experiencing the symptom is need for correct diagnosis.  Dealer parts changers......

 

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6 minutes ago, Dennis A said:

Agree, they have already got you to throw sensors at it needlessly.  You can randomly replace parts yourself, why do you need to pay a "tech" dealer rates to do the same?  

If it were I spend about an hour doing some simple things.  Check all fluids, replace if needed.  Check the battery how old is it, more than 5 years time for a new one.  Check all the battery terminals for corrosion and follow them up to the starter and alternator to make sure they are tight and clean.  Next pull all plugs look like crap or been more than 5 years replace them.  Get some good gas and sea foam or mystery oil and go for a run.  Sometimes its the simple things. No fix after that I take somewhere else where they can give me a good diagnosis, maybe your place has done that I don't know.

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The Dealer did run a diagnostic and a few other tests on fuel pressure.  The engine light (red and yellow lights) came on and an audible beep sounded each time it occurs.  They made a few calls to Chaparral and at this point everyone is guessing.  I am going to start with the basics and work my way back from there.  Thanks for the advice and suggestions.  I was hoping this had happened to someone else on this forum and it would be an easy fix.  I will keep you updated as I go and hopefully find the solution before it gets too cold and I have to winterize the boat. 

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9 hours ago, Scot said:

The Dealer did run a diagnostic and a few other tests on fuel pressure.  The engine light (red and yellow lights) came on and an audible beep sounded each time it occurs.  They made a few calls to Chaparral and at this point everyone is guessing.  I am going to start with the basics and work my way back from there.  Thanks for the advice and suggestions.  I was hoping this had happened to someone else on this forum and it would be an easy fix.  I will keep you updated as I go and hopefully find the solution before it gets too cold and I have to winterize the boat. 

What fault is triggering the alarms?  Calling Chap likely won't lead to anything as they didnt manufacture the engine, just bought it and installed it in the hull.  A call to VP would be more appropriate.  

What year and engine model do you have?

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The real problem with ANY .........Preventive  Checks ???.........The risk of accidental damage to the boat.  If it is not giving a problem ?   Why play with it ?  Nothing I buy EVER GETS ANY P M at a dealer or specialist place.    How PERFECT does something need to run before YOU CAN LEAVE IT ALONE ?

The Honda Accord told me it needed new plugs. Very light occasional stumble on acceleration changes. Changed them. Perfect running again.  NOTE  They looked good.  BUT 2 original plugs had almost NO tension sealing the plugs in the holes.  I find 13 pounds of tension a little light for something that heats & cools a lot. Been a week of running. Will retorque to 13 pound feet.  Probably should do the whole engine.  

NAAHH     Even I am human. Getting old.  The car since new has 132,000 miles. I keep good, old, equipment & friends.

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