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90 safari loss of power on hills


billprasad's Avatar
Member

Join Date: May 2001
Posts: 20

08-17-04, 08:19 AM   #1  
90 safari loss of power on hills

Hello,

My safari has a significant loss of power when climbing hills.
With a 4.3ltr motor, I figure it should be no problem at all.
It also has slow pick up on straight grades, its just more noticeable on hills.
By slow I am saying a 4.3ltr should haul @$$, it just takes its time.

I had the transmission overhauled last year, and a rebuild motor was installed a couple of years ago.

My guess is that the fuel pump has never been changed, could this be the problem?

thanks in advance for your wisdom


bill

 
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carguyinva's Avatar
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Join Date: Nov 2003
Posts: 1,147
VA

08-17-04, 08:36 AM   #2  
it could be that...

...as well as 2 dozen other things. perhaps you should invest in a diagnosis by a trained driveability tech and then decide your course of action. it would not be wise to ask someone to replace the fuel pump just because it's never been changed...when was the last time it had a fuel filter?

 
billprasad's Avatar
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Join Date: May 2001
Posts: 20

08-17-04, 08:47 AM   #3  
90 safair loss of power

Hello Again,

The fuel filter was changed approx 5 months ago.

As a professional, what would you be looking for if you were to test drive it?

I am not a fan of taking it in to be diagnosed as they charge around $80 to diagnose it, and usually recommend a lot of other stuff so they can line their pockets.

Last year I went to [email protected]$ for a muffler change, I asked for just a muffler change. Well, they insisted on a pipe change, as well. They also took the liberty of checking the brakes and recommended a brake job, and new shocks. The shocks had been changed the year before, with brand new munro shocks all around, the brakes had been done six months prior, so they were fine.

That was the first and last time i would be going to that repair shop.
Not to paint everyone with the same brush, there are honest and dishonest people in all trades. In my opinion the bosses are concerned with upping sales, and the honest mechanics must follow the bosses orders.

thanks

 
carguyinva's Avatar
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08-17-04, 08:58 AM   #4  
sorry...

...you've had probs finding a place you can trust...keep looking, they're out there.

in order of easiest to toughest to eliminate i would do this...

check the ignition timing and verify correct base timing AND EST operation

check exhaust back pressure 1.25 PSI max @ 2000rpm

check fuel pressure AND volume...9-13 PSI at all rpm's and at least a pint in 30 seconds

compression

this should at least give you some tools should you try diagnostics yourself...or to ask smart questions if you take it to someone

 
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