DIRTRIDER

hello guys!
Thats me again. Russian owner of Cherokee XJ

Everytime i start the engine and no matter it is hot or cold i have 3 or 4 times of dying RPM, right to 300 rpm. And after that everything is ok and engine runs great without problems. So what i have done. New o2 sensor,new TPS,new IAT sensor,new temperature sensor in the bottom of the block for the PCM (just forgot how it calls) Throttle is cleaned.New (iac).Good ground on connectors and whole engine.I have made a lot of new wirings. New fuel pump and fuel regulator.i tried to disconnect many sensors and nothing changed.None of them think it might be a problem with PCM.Some capacitors or chips are too old.And its too annoying especially when you have to drive fast after you start the engine but i must wait for a while and drive only after engine will feel good for driving. What do you think about that ?

94xj5spd

Here's a thought. .. Have you cleaned the ccv tube where it goes into the valve cover.

RTorrez1

Have you tried "Cruiser54's mostly Renix Tips"?
Here's his link to them. It's worth reading and giving them a try.
https://www.cherokeeforum.com/f51/cr...x-tips-153657/

DIRTRIDER

Thanks for reply.Valve cover is cleaned inside and all tubes are new.These flops are not eternal and happens only when you start the engine. Seems like PCM loosing constant battery plus and relearning everytime,thats why i am thinking about testing PCM wirings.

DIRTRIDER

yes i know this RENIX bible but my problem is not similar to other renix engines.

DIRTRIDER

I`ve sloved the problem.New O2 sensor and absolutely new wires from ECU to sensor that i made, solved this idling problem.Only 3 wires and i am happy.

MUKAK

u not the only russian with a renix....

DIRTRIDER

Who is this lucky man ?

DIRTRIDER

And one important thing that i forgot to tell you.My previous "new o2" sensor was zirkonia and absolutely did not match to the renix injection scheme.Now it is titania and everything good! i have bought sensor on Ebay and part number is 4713639.