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Chevrolet Z 28: I have 94 z 28 runs starts fine cold or hot

Customer Question
I have 94 z 28...
I have 94 z 28 runs starts fine cold or hot but breaks up at 2400 rims using lots of fuel new dist coil wires plugs computer
Submitted: 2 years ago.Category: Chevy
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Answered in 8 minutes by:
5/18/2015
Chevy Mechanic: Dan, Technician replied 2 years ago
Dan
Dan, Technician
Category: Chevy
Satisfied Customers: 24,724
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Hello, my name is ***** ***** I'm here to help get your problem solved. If it runs fine up until 2400 rpm that is a symptom of a clogged catalytic converter. Completely remove front oxygen sensors to relieve exhaust pressure, if this allows rpm to go past 2400 you know converter is clogged. Let me know how it goes or if you have more questions, thanks.
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Customer reply replied 2 years ago
Removed o2sensor no difference what next?
Chevy Mechanic: Dan, Technician replied 2 years ago
Try to see if you can get rpm up higher if spraying fuel into engine at same time. I'm assuming check engine light is not coming on?
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Customer reply replied 2 years ago
My mechanic is going to try the fuel test on Monday or teus sorry this is a long process I am in North Carolina and my car is in new york
Chevy Mechanic: Dan, Technician replied 2 years ago
No problem, let me know, thanks.
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Customer reply replied 2 years ago
My mechanic did the fuel test u recommended . Also replaced coil again with new delco part still breaking up at 2500 rims. Next idea please no one has a clue
Customer reply replied 2 years ago
Dan did u get my message?
Customer reply replied 2 years ago
Does he know what we have done so far?
Customer reply replied 2 years ago
It has been more than 24hrs and no response. Please contact me ASAP thanks
Customer reply replied 2 years ago
phthisic message is being sent o 6 10 15 not 6. 8 15 why has no one contacted me
Customer reply replied 2 years ago
If Dan has referred me to anew mech when will he contact me?
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Dan
Dan
Dan, Technician
Category: Chevy
Satisfied Customers: 24,724
24,724 Satisfied Customers
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database

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