Weird intermittent no start issue...
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Tuned
Joined: Dec 2014
Posts: 296
Likes: 2
From: Denver, CO
Weird intermittent no start issue...
Two days ago ran into an issue on my 01’ V10 Ex. Went to leave a store and the Ex wouldn't start. Cranks strong but wouldn't run. A couple times it would start but die immediately. Finally got it running once we swapped the fuel pump relay, but I have since gone back to the old one as a test and it works. I tried to bypass the IAC by pressing the gas pedal but that didn't help. It has not died while driving and seems to have normal power. I also went on a long drive (5 hrs) last Friday with no issues.
I have changed the IAC, replaced the battery and fuel pump relay. I have been monitoring the fuel pressure with a gauge and it seems to prime fine with good pressure (35) when starting and running. It did not do it yesterday or this morning.
I am leaning towards a fuel pump but the pressure is telling me its good. Any thoughts?
I have changed the IAC, replaced the battery and fuel pump relay. I have been monitoring the fuel pressure with a gauge and it seems to prime fine with good pressure (35) when starting and running. It did not do it yesterday or this morning.
I am leaning towards a fuel pump but the pressure is telling me its good. Any thoughts?
Hotshot
Joined: Jan 2004
Posts: 19,762
Likes: 1,079
From: St Louis
Any thoughts?
Include the YEAR of your Exc, there are differences.
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Tuned
Joined: Dec 2014
Posts: 296
Likes: 2
From: Denver, CO
Added model year, thanks for the reply
Also, we tried to check fuel pressure when it was in failure mode but the gauge wasn’t sealing properly. If it would have been working we could have our answer. Was only able to check properly with a different gauge.
Also, we tried to check fuel pressure when it was in failure mode but the gauge wasn’t sealing properly. If it would have been working we could have our answer. Was only able to check properly with a different gauge.
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yendor6569
Fuel Injection, Carburetion & Fuel System
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May 10, 2009 11:15 AM
