can anyone help me ? my engine in my hatch is making like a ticking/clicking noise not while idled there but while im driving at a certain rmp (cant tell what rmp cuz my rmp gauge doesnt work) itll make that noise . can anyone help me out or have any ideas? thanks i really appreciate it

 

Have you looked around the engine bay and even listened to see if you can hear where its coming from?

Ear close to the valvetrain?
Listening by the accessory belts?

Only a few places a ticking can come from....

 

What rpm range? Medium like normal driving or high like before shift or gettin on it? Could be oil thickness issue but my guess would be valves need adjustment.


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it sounds like under the valve cover as i listened and it does it as im driving normal before shifting once i shift it quiets down then at a certain rmp it does it again

 

Could be bad gas, or the ignition timing or valve clearance needs adjustment.

What car?

 

i can try that and its in my 91 ef si hatch

 

What ECU?

 

to be honest i am not to sure

 

Find out. There will be a label on it. Should be a P06.

Any CEL codes?

 

were would it be located and how can you tell about cel codes ?

 

The stock ECU for your car would be located under the front passenger's carpet. Look there first.

The method for checking CEL codes depends on what ECU you have.

 

my ecu is a pm6

 

The PM6 ECU is OBD0 and is for the D16a6 engine (I think). The D15b7 engine is OBD1 and requires the OBD1 P06 ECU.

My guess would be that the engine-ECU mismatch is the root cause of your problem. There may be other problems, but first address this important one.

 

you think that would cause what its doing ?

 

It's very possible. Maybe others will also chime in.

There's a Codes sticky at the top of this forum. It'll tell you how to look for codes on your PM6.

 

alright bro thanks i will get that ecu and see whas up

 

You should verify the mechanical timing is spot on as well. A tooth off could cause some chatter like you've described.

 

so the On-Board Diagnostics is mostly for emissions but various other sensors like the TPS, knock sensor, crank position, cam postion etc...they send electrical currents to the ecu. they are mostly electrical sensors not mechanical, especially OBD0 and OBD1. for noises you hear, you usually have to diagnose yourself. so start w/ the valve adjustment and oil change. its the infamous single cam tick, every one ive owned had the same thing until i did the adjustment and a good rule of thumb is ''you'd rather hear it, then smell it.'' (the gas you waste from making them too tight.)