markcalej1

so my cars been choking like when accelerating, round 1.5-3.5 rpm..my car feels like its chokin and not gettin any speed. it would get stuck around that rpm and when it passes 4 itll start picking up. so i thought it was a clogged CAT so i straight pipe it but my engine light is off is that normal isnt it suppose to be on? Also, what could be the problem only think i can think of is the dizzy.

NVturbo

If the O2 sensor is mounted in front of the straight pipe, it won't matter. Bogging in that RPM range can be several things.....bad gasoline, clogged fuel filter, bad spark plugs/wires, etc.

jbpnoman

You need to give us basic information, like what chassis, engine, and ECU you have.

Former User

This^

In your first post, you MUST provide all pertinent information about your car and engine. Failure to do so may result in thread closure.

markcalej1

my bad, its a 1995 civic coupe ex, d16z6 single cam v with a p28. ive changed the fuel filter, and my sparkplugs and wires are pretty new still just changed em bout 4 months ago, i thought it was my cat being clogged and thats not it either..only thing in my mind is my dizzy.

my car sits pretty low..and my headers are pretty scratched up and kind of smashed in. u think that could also be it ?

jbpnoman

That depends on how "kind of" smashed in they are. Since you're running OBD1, a straight pipe won't create a CEL (but it's still federally illegal, and won't pass inspection in most states).

Check your mechanical and ignition timing. While you're at it, pull your plugs and inspect them. Either post pictures of all of them so we can help you possibly diagnose them, or compare them to this image to see if there are any engine problems. It's not 100%, but it's a great starting point.

Hidenplanvew

Love it when people start throwing parts at cars! Then they say I dont understand... Do some test

Fuel pressure
Spark (test Coil, and other parts of dizzy)
Compression test
Timing