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  #1  
Old 04-08-2010, 05:07 PM
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Dip in acceleration

Hi guys,

My WJ is having some problems lately. When accelerating, there is a dip in power around 3000 rpm. Also the fuel consumption is higher then before. Checked spark plugs, all look ok. Can it be a fuel pressure problem? (fuel pump or filter/regulator?).
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  #2  
Old 04-08-2010, 05:54 PM
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Re: Dip in acceleration

try your o2 sensors the up stream ones " ones comeing from the maifolds before the cats" they could be starting to act up on you and they will cause performance problems when going out.
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Old 04-09-2010, 03:41 PM
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Re: Dip in acceleration

Is there any way to measure them?
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Old 04-09-2010, 08:28 PM
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Re: Dip in acceleration

how many miles? O2's can cause loss of mileage and power loss too. What motor?
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Old 04-09-2010, 08:33 PM
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Re: Dip in acceleration

He has a 4.7L.
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Old 04-10-2010, 01:28 PM
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Re: Dip in acceleration

My GC is indeed a 4.7L and has now 109.000 Km on the clock. Acceleration at city speeds seems to be normal, the problem is only noticeable at highway speeds.
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Old 04-11-2010, 11:34 AM
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Re: Dip in acceleration

i would give the seafoam a go. let your 4.7 inhale some thro the power brake booster vacum hose. do about half a can and put the rest in the tank. it will do wonders for you. and its easy just make sure youdont let it suck in fast do it rather slow..
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Old 04-11-2010, 03:20 PM
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Re: Dip in acceleration

Never heard about this seafoam. Is it a brand? I live in Brazil, any cleaner which goes through the inlet will do?
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  #9  
Old 04-11-2010, 09:21 PM
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Re: Dip in acceleration

Seafoam is the brand name. Comes in a can.
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Old 04-12-2010, 11:10 AM
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Re: Dip in acceleration

yes its a brand name like mention above. look for SEAFOAM white can i beleave with a little white lid and red letters i think. look for it at your autoparts stores im not familar with brazil lol


hope this helps

Joe
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Old 04-13-2010, 11:38 AM
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Re: Dip in acceleration

http://www.seafoamsales.com/
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