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Discussion Starter · #1 ·
On start up it runs fine ,but let warm up the injectors quit working when you give it gas. I’ve put anew fuel pump and filter on ,new tps map , switch out ecm oil sensor coolant gage anti nock sensor rebuilt the Tubi . But nothin has. Change still same problems
 

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‘01 Silverado 2500HD 8.1/Allison 5sp xcab long bed
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Let’s start with a little help from you. I’m assuming an 87-95 truck since you’re mentioning rebuilt TBI?

Please verify your fuel pressure. I know it’s a new pump, but new does not always equal good.
 
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New fuel pump pressure is 15 psi i just replaced the distributor it’s a little better but still cuts out it’s 93 with Vortech heads
 

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2005 Chevy Avalanche
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New fuel pump pressure is 15 psi i just replaced the distributor it’s a little better but still cuts out it’s 93 with Vortech heads
Have you tried measuring the resistance of each injector with an ohm meter? If one (or more) have a reading different than the rest, then you have a bad injector. I had this happen on my '89 Grand Prix.
 
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