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Tim's Auto Repair
Tim's Auto Repair, mechanic
Category: Chevy
Satisfied Customers: 15767
Experience:  Have owned a repair shop for 25 yrs.
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My 1995 chev astro has a misfire in it when it warms up runs

Customer Question

my 1995 chev astro has a misfire in it when it warms up runs better in cool tempetures outside and more throttle I give it gets worse,around town 35 mph runs ok but interstate constant misfire any ideas?
Submitted: 1 year ago.
Category: Chevy
Expert:  Tim's Auto Repair replied 1 year ago.
Hi,My name is Tim,
I will do my best to assist you
did you not replace the plug wires with the tune up?
does the engine light stay on?if so,can you give me the computer codes?
how much fuel pressure does it have?
tell me all you can
thanks
Customer: replied 1 year ago.
changed wires-- fuel pressure was 125 if I remember correct--When I turn the ignition off the oil pressure gauge stays at about 30lbs and if I turn the switch on then off the gauge goes down to zero and the van will run better than if I start with the gauge at 30 lbs ??? I'm thinking some kind of relay maybe ?which one?
Expert:  Tim's Auto Repair replied 1 year ago.
i dont know of a relay that would do this,,
it can not have 125lbs of fuel pressure,,can you please check?
does the engine light stay on?if so,can you give me the computer codes?
did you not replace the plug wires with the tune up?
thanks
Customer: replied 1 year ago.
I will check fuel pressure,no check engine light on ,did replace plug wires
Expert:  Tim's Auto Repair replied 1 year ago.
ok
let me know on the fuel pressure
thanks