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I have a 2000 s10 with 2.2L/5-Speed that starts & runs great…

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I have a 2000...

I have a 2000 s10 with 2.2L/5-Speed that starts & runs great sometimes and other times it only spins over & over by the starter without starting. It doesn't seem to matter whether it has just been running (engine hot or cold) or not. It is a Flex Fuel (VIN 5) and does not appear to have a fuel pressure regulator on the fuel rail (like my 1999 S10). Sometimes (not all) it will finally start normally during a no start episode if I switch the ignition on for a few seconds (without engaging the starter) and off several times before engaging the starter again (as if a fuel regulator is failing). I have replaced the fuel pump and fuel filter and the problem continues. When it starts, it may start normally for days/weeks or it may not start the next morning. When it starts, it runs completely normal. I just can't trust that it is going to start back up. Any suggestions?

Mechanic's Assistant: Thanks. Can you give me any more details about your issue?

I have check for spark and there appears to be spark during the no start episodes.

Submitted: 2 years ago.Category: Chevy
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Answered in 9 minutes by:
2/27/2016
Chevy Mechanic: Tim's Auto Repair, mechanic replied 2 years ago
Tim's Auto Repair
Category: Chevy
Satisfied Customers: 16,247
Experience: Have owned a repair shop for 25 yrs.
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Hi, My name is ***** ***** for the delay.

I will do my best to assist you.

does it have fuel pressure when it wont start?

will it start with a prime[a little fuel or starting fluid] when it wont start?

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Chevy Mechanic: Tim's Auto Repair, mechanic replied 2 years ago

does the engine light stay on?if so,can you give me the trouble codes?

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Customer reply replied 2 years ago
I haven't been to prime the engine when the no-start condition occurs. It usually happens when it's not possible (like leaving the car wash, or leaving for work). I haven't checked to see whether the fuel pressure is adequate (or leaking down) either. It does have a new fuel pump & filter.
Customer reply replied 2 years ago
I have owned this truck for 3 years and the check engine light has always been on. Although it has started/ran great, it has always had a P0410 code because a someone had removed the secondary air injection system. The only other code is a P0141 Code for the downstream O2 Sensor
Chevy Mechanic: Tim's Auto Repair, mechanic replied 2 years ago

SORRY,i have been off line..

we relly need to check to see if it will start with a prime or the fuel pressure,i need to know if we are loosing the spark or fuel when this happens,,and a prime is a good test.

thanks

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