Idea..?

[Shank666]

I have measured the ohms of my:
- Air intake sensor and it's plug
- Cold temp sensor and it's plug

Both were reading proper ohms at proper temperatures.
Next thing to check is the ECU, It's a 1g Non Eprom.
Removed, inspected for damage, found a bent component and a small bit of corrosion in the middle of what seems like nowhere, sprayed down with component degreaser, currently debating on mailing it to ECMtuning.

The problem is the car will not start in the cold unless I spray quick start in the air intake 2-3 times. Pretty sure it's not too good for the air intake or piston walls and what not so I'd rather not do that. I was wondering:

Is it somehow possible to setup a toggle switch that would add more fuel to the engine for cold starts?

If so how would you go about doing it?

Would you add a resistor to the ECU to tell it it's colder outside that it actually is?

Would you add a 5th injector and install a ECMLink then program the extra injector to turn on for cold starts?

Would you add another fuel pump to increase fuel pressure?

What would / could you do?

 

[Cdc1221]

First thing to check is the condition of the plugs and their heat range. Too cold of a plug causes hard cold starts. Second, check the coolant temp sensor that goes to the ecu. Fix what's broken. Don't try to reinvent the wheel

 

[LaserRS92]

I had the exact same symptoms and it ended up being my coolant temp sensor. If I ever buy another dsm again or one of my friends do the coolant temp sensor is going to be one of the first things getting replaced.

 

[Shank666]

Thanks for the quick replies,
I meant the coolant temp sensor, not cold temp sensor.
The coolant temp sensor is brand new, and registering proper ohms.
As for the plugs, do you by chance know what the optimal heat range would be?

 

[Cdc1221]

I use bpr7s on my stock motor with 93 pump. Higher octane requires a hotter plug. But ngk br6es plugs should work good on a mostly stock car. These are a bit hotter than the 7s

 

[snowborder714]

Please try again with a more descriptive thread title. A generic thread title like this does not help me when browsing new threads to see if I can offer help or when searching old threads for info to help myself or others.