hannahshadow30
Colorado intermittent starting issue
Summary of the thread
A 2004 Chevrolet Colorado is experiencing intermittent starting issues, stalling at idle, increased fuel consumption, and a check engine light, suggesting a potential fuel pump problem. However, it was advised to first check the cable and plug connections to the fuel pump, as faulty connections can mimic fuel pump failure. Upon inspection by a mechanic, a defective cable/plug connection was identified and repaired, resolving the issue at a lower cost than replacing the fuel pump.
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4 comment(s)
hannahshadow30 (community.author)
I did wiggle some wires, but I didn't check the power. How would I go about checking that specifically? Is it something I can do with basic tools, or do I need specialized equipment?
jannikwolf1
Testing for power requires a multimeter, which you can pick up relatively cheaply. However, if you're not comfortable working with electrical systems, it might be best to take it to a workshop. A misdiagnosis could lead to unnecessary repairs. When I had this problem with my Volvo, it turned out that I had a corroded wire and I had it repaired in a workshop.
hannahshadow30 (community.author)
I took your advice and had a mechanic check the wiring, and you were spot on! Turns out it was a defective cable/plug connection to the fuel pump. Total cost for the repair was 95€ – much better than a new fuel pump! I learned a lot from this experience.
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CHEVROLET
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COLORADO
jannikwolf1
Your symptoms sound awfully familiar. I had a similar experience with my old Volvo V70 – the engine would cut out unexpectedly, much like a bad fuel pump. Before jumping to conclusions, have you checked the cable and plug connections to the fuel pump? A faulty connection can cause all sorts of havoc and is much cheaper to fix than replacing the whole unit. Is there power getting to the pump?