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Old 01-17-2008   #31
bradslt5
 
Join Date: Oct 2007
Location: lone pine and mammoth lakes ca.
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Default Re: Exhaust changes causes problems

BINGO. i agree with the above . ebay has a real deal on fuel pump assemblies. but i remember in the bible it talking about one of the fuel pumps turning off as stated above . good catch
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Old 01-17-2008   #32
rogerzr1
 
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Default Re: Exhaust changes causes problems

If it is a primary fuel pump, would I need to drive it to get the fuel presure or would it show the problem at idel. The reason I ask this is that I am having a hard time finding a fuel presure gauge that has a long enough hose to drive and check it.
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Old 01-17-2008   #33
Pete
 
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Default Re: Exhaust changes causes problems

Quote:
Originally Posted by rogerzr1
If it is a primary fuel pump, would I need to drive it to get the fuel presure or would it show the problem at idel. The reason I ask this is that I am having a hard time finding a fuel presure gauge that has a long enough hose to drive and check it.
Try this first,hold both heater up & down arrow buttons for 5 seconds you will see 00 let them go and just hit the up arrow till you see 16 now hit auto button that will be your engine temp in celcius let your car idle till it hits 75 celcius if it dies then the primary pump is gone.
We have 2 pumps both are on at cold start up @ 169 F secondary shuts off.


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Last edited by Pete; 01-17-2008 at 03:02 PM.
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Old 01-17-2008   #34
bradslt5
 
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Default Re: Exhaust changes causes problems

great explanation on how to use the airconditioner for temps i allways wondered how to do that =D>
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Old 01-17-2008   #35
Jeffvette
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Default Re: Exhaust changes causes problems

Quote:
Originally Posted by rogerzr1
If it is a primary fuel pump, would I need to drive it to get the fuel presure or would it show the problem at idle. The reason I ask this is that I am having a hard time finding a fuel presure gauge that has a long enough hose to drive and check it.
Well, all you really need to do is pull the secondary fuel pump fuse and keep a gauge on the rail and key on. Pump should run for about 2-3 seconds and pressure should be between 48-5 psi and hold after the pump stops running.

If you can find just a gauge, and hydraulic hose shop can build you a custom length hose.
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Old 01-17-2008   #36
Pete
 
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Default Re: Exhaust changes causes problems

Quote:
Originally Posted by Jeffvette
Well, all you really need to do is pull the secondary fuel pump fuse and keep a gauge on the rail and key on. Pump should run for about 2-3 seconds and pressure should be between 48-5 psi and hold after the pump stops running.

If you can find just a gauge, and hydraulic hose shop can build you a custom length hose.
My way is the lazy way just sit back listen to tunes and have a beer.

Pete
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'91 #1635 PoloGreen 350 LT5
11.09 @ 129.27
11.04 @ 128.86
474RWHP 400RWTQ
http://www.youtube.com/watch?v=SFNFOhGGlR4
http://www.youtube.com/watch?v=ZlRIOMwaDYY
https://sites.google.com/site/peteszr1garage
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Old 01-17-2008   #37
XfireZ51
 
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Default Re: Exhaust changes causes problems

Quote:
Originally Posted by Pete
My way is the lazy way just sit back listen to tunes and have a beer.

Pete
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Old 01-17-2008   #38
rogerzr1
 
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Default Re: Exhaust changes causes problems

Quote:
Originally Posted by Pete
Try this first,hold both heater up & down arrow buttons for 5 seconds you will see 00 let them go and just hit the up arrow till you see 16 now hit auto button that will be your engine temp in celcius let your car idle till it hits 75 celcius if it dies then the primary pump is gone.
We have 2 pumps both are on at cold start up @ 169 F secondary shuts off.


Pete
I did what you said Pete(pretty cool btw). The car didn't shut off at 75. I decided to take it for a drive with the power key off. It drove like sh**. When I applied the gas, the car shuttered and vibrated for a couple of seconds then smoothed out. My question is even though the car didn't shut off at 75, can the primary fuel pump still not be preforming correctly. Just wanted to see if this rang a bell with anyone. I plan on getting a guage tomorrow and trying what Jeff said to do.

BTW I appreciate everyone's help trying to educate my ignorant a**.
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Last edited by rogerzr1; 01-17-2008 at 05:21 PM.
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Old 01-17-2008   #39
XfireZ51
 
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Default Re: Exhaust changes causes problems

Roger,

Have you checked injectors?
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Old 01-17-2008   #40
rogerzr1
 
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Default Re: Exhaust changes causes problems

Quote:
Originally Posted by XfireZ51
Roger,

Have you checked injectors?
Injectors were all changed in August.
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