I Need Help! Anyone?

[Rx7 Aka The S4]

My S4 Rx-7 has a problem that i cant figure out. one problem is my coolant light pops on and buzzes eventhough i have water in the bottle and full in my rad. second when my car is cold i drive and it feels like my fuel injectors cut off and hesitates the car during 2000 rpms thur 5000 rpms even if the car warms up it hesitates but not as much. my ride isnt turbo so i would like to know what is my problem. im guessing the buzzing and coolant light might be caused by a sensor.Can someone please help.

[Capt.Moe]

Originally Posted by Rx7 Aka The S4

My S4 Rx-7 has a problem that i cant figure out. one problem is my coolant light pops on and buzzes eventhough i have water in the bottle and full in my rad. second when my car is cold i drive and it feels like my fuel injectors cut off and hesitates the car during 2000 rpms thur 5000 rpms even if the car warms up it hesitates but not as much. my ride isnt turbo so i would like to know what is my problem. im guessing the buzzing and coolant light might be caused by a sensor.Can someone please help.

Coolant problem? Well with my buddies 86 you have to top up the rad from the top hose. right near the engine block. That fixed out problem.

The Fuel cut off... ohh I am not too sure about that. Wait a second.... Make sure your secondary injectors are plugged in.

If that doesn't help, injector cleaner?

[Capt.Moe]

Book says not to add coolant that way, but it is the only way that I have found to work, The one in the Haynes is a little off.

The Secondary injector plugs are CRAP. My buddies keeps popping off for no apparent reason... Secondary plugs are on the passanger side of the block and should be green, make sure they are fully clipped in place.

[Rx7 Aka The S4]

i havent replaced my injectors and they are plugged in. my hesitation problem started after i ran out of gas.my fuel pump is new and i did put injector cleaner in it. so i guess i have to replace them

[fcdriver]

Check the fuel filter before replacing the injectors.

Take it off clean the fitting and blow through the filter in the direction of the flow, if it is hard to blow through then your filter is clogged go buy a new one, if it's not hard to blow through then you can check a few other things.

[Rx7 Aka The S4]

i replaced my filter it seems that someone before me put it in upside down. now i replaced it and it still does it and i even replaced the injectors. oh well i guess it might be a ground somewhere.

[Jims5543]

How is your engine grounded?

If its only that little wire going to the fire wall, I would suggest getting a good heavy wire (think battery cable) and ground the engine to the chassis. I have one going from a bolt to the tranny to the frame.

RX-7's were notorious for not have proper grounding. This will cause the hesitation your describing.