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#11 |
Join Date: Aug 2014
Location: palatine il.
Posts: 36
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Great info...My car is doing the same thing. Stumbles off idle and weak at wot. Its time!! Going with the denso pumps. Great pics...will tackle it when they come in.
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#12 |
Join Date: Jun 2008
Location: Alberta
Posts: 85
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I changed my fuel pumps last summer after car was started after sitting 5 years.
It started, left it idle for 15 mins, car died. It appeared as empty on gas gauge, so put in some fuel, car would not start, not fire. Decided to change fuel pumps. I found one pump at auto parts store, and one pump for a older gmc suburban 454 fuel injected, from GM store. Both pumps seemed to be a close match and cheaper price, so installed them and fuel filter . Car is NO START, no fire, but has the 50 lbs pressure to top of engine. Checked spark plugs, they seemed a bit weak for spark, but they all working. Car will Not Start. I had a mechanic friend work on the car, bypassed the VATS system using a GM "VATS INTERAGATOR" tool I have, and we run a expensive scan tool, could not find any codes. I even swapped the ECM out with my other matching LT5, but No Start. I don't know where to go at this point. Any HELP out there ? Sent from my iPhone using ZR-1 Net Registry
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LT5 |
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#13 | |
Join Date: Jun 2013
Location: Toronto
Posts: 783
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#14 |
Join Date: Jun 2008
Location: Alberta
Posts: 85
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Yes, the starter works perfect, and we even used a VATS INTERAGATOR to bypass the theft system.
Sent from my iPhone using ZR-1 Net Registry
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#15 |
![]() Join Date: May 2016
Location: Hawaii
Posts: 124
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Have you checked the injectors?
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#16 |
![]() Join Date: Aug 2014
Location: Kansas City, MO
Posts: 838
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I had an issue getting my fuel pump assembly back in the tank. Taking it out and all that only took a few minutes actually. The socks did concern me, but I did something similar with zipties. I just hope it all works okay.
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Looking for a ZR-1 1985 Yamaha RZ350-NOT STOCK 1971 Yamaha AT1-Middle of a restoration |
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#17 | |
![]() Join Date: Jul 2009
Location: Texas
Posts: 793
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Great Work Mike well done =D>
Dave Hetrick Quote:
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#18 |
Join Date: Jun 2008
Location: Alberta
Posts: 85
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Great write up on the pumps. I went thru that task.
About my NO START, after new pumps, .... I don't know how to check injectors. But I also can't understand how all 8 injectors would fail at one time ??? Sent from my iPhone using ZR-1 Net Registry
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#19 | |
![]() Join Date: May 2016
Location: Hawaii
Posts: 124
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Could be something else, but if you haven't checked the injectors, it might be a good place to start. |
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Tags |
filter, fuel, lt5, pump, sensor |
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