2.5 stalling

[663csx-t]

i have a csx-t with a 2.5 c block 20 over pistons and 20% injectors with the stock 2.2 cumputer i got the car going after 2 years car likes to stall i had a fule leak fix that then i seen that there is a wire broke off the injector harness got a new one but now it seems like it stalls out even more could it be a bad ground from the fule injectors or a bad ecm or something im running out of time sdac19 is comeing real quick all motor stuff is all new or rebuilt

[cordes]

My guess is the AIS, or base idle adjustment. It could be your ignition timing too I guess if it's way off.

1. Check ignition timing, make sure it's set to 12* with the coolant temp sensor unplugged after it's up to temp.

2. Car up to temp in neutral and running. unplug the line to the brake booster. The car will rev really high. Let it do that for several seconds.

3. Unplug AIS, plug vac line back in. If the car stalls, try to start it back up. You might need to open the TB with a screw driver, or more likely a torx bit for it to stay running if it's really far out.

4. With the car running, and the AIS still unplugged, adjust the idle to 900RPM.

5. Plug the AIS back in.

Congrats, you've just reset both your ignition timing and base idle ruling both of those out. It might take a bit for the car to learn the new idle, but don't worry about it. It might idle high for a while, but it should come back down and the stalling should (hopefully) have stopped.

[663csx-t]

what is the ais and whare is it at

[cordes]

There are two things on the driver's side of the throttle body. It's the lower one.

[663csx-t]

thanks for your help car dose not stall anymore now all i have to do is get my a f gauge and tune it plus its missing tooo

[cordes]

Sounds good. I'm glad you have it running consistently.

[LynX853]

don't keep that 2.2 cal for the 2.5.. the timing for it is alot more aggressive and can cause some engine damage down the line

[cordes]

don't keep that 2.2 cal for the 2.5.. the timing for it is alot more aggressive and can cause some engine damage down the line

Nice catch. There is no way I would run a 2.2 computer on a 2.5 these days. I know a lot of the guys who have been around have gotten it to work, but there is just no reason to do so with custom cals etc. out there for free.

[663csx-t]

i thought it would just run a littel lean with the 2.2 cal thanks

[cordes]

i thought it would just run a littel lean with the 2.2 cal thanks

It will be lean and have too much timing. It's a bad combination for sure.

[663csx-t]

yes that is true its running a littel rich now but yes i do plane on getting a cal from cidy

[turbovanman²]

Back off the base timing, try 8 deg and run premium fuel.

[663csx-t]

I think timmeing is at 12 and i dont run nothing but premium

[cordes]

I think timmeing is at 12 and i dont run nothing but premium

You need to back the timing off to 8*. I have heard many of the guys who ran 2.5s on 2.2 electronics state that 8* is the way to go.

[663csx-t]

thanks for you help i dont think my car is going to make it to sdac 19

[cordes]

thanks for you help i dont think my car is going to make it to sdac 19

You don't need a car. There is plenty of fun to be had just hanging around.

[663csx-t]

i am there no matter what