wierd fuel problems with my 2g...

[98GST6BOLT]

i dont know exactly why but my car is very hard to start when it is cold, but runs good when started, and then doesnt wanna start when i fill up the gas tank, i dont have many mods just a six bolt swap, 02 housing and a 190 walbro fuel pump. ive tried a few things but dont know whats goin on, any suggestions? thanks

 

[luv2rallye]

Check for leaking fuel pressure regulator (on fuel rail end) which bleeds off pressure when car off (it should maintain pressure for hours). BTW bolding your entire text is frowned upon here.

 

[gsxtasy]

Do you have your ECT(engine coolant temp) sensor hooked up? It's located on the thermostat housing below your coolant fill cap.

 

[98GST6BOLT]

ya mines not plugged in bc my 2g harness didnt have that on itwhen i did the 6 bolt swap. idk what to do about it. and how would i test if the fpr is bad?
-and sorry bout the bold thing new to this stuff

 

[gsxtasy]

ya mines not plugged in bc my 2g harness didnt have that on itwhen i did the 6 bolt swap. idk what to do about it. and how would i test if the fpr is bad?
-and sorry bout the bold thing new to this stuff

Well, that could be a problem. That means your ECU is seeing sporadic coolant temps, usually in the negative numbers all the time. Since it is wrong it tries to add a bunch of fuel to help warm it up, however it ends up flooding, making it hard to start.

Unless it was cut off, your 2g harness has a coolant temp sensor connector. It may look different than the connection on the 1g housing, assuming your using a 1g housing.

The 2g connector would look like the one in yellow...

However if your using the stock 1g sensor in the thermostat housing, it will be two spades perpendicular to each other. If you can find that plug, you can go to your local auto parts store(Napa, Autozone, etc.) pick up a coolant temperature sensor for the 2g, swap them out and plug it back in.

http://www.dsmtuners.com/forums/newbie-forum/237701-coolant-temp-sensor-plug-picture.html

 

[98GST6BOLT]

thanks man i gotta check up tomorow, ill let u know. i dont think its flooding it tho bc i need to push the gas pedal to get it to start up better.

 

[gsxtasy]

thanks man i gotta check up tomorow, ill let u know. i dont think its flooding it tho bc i need to push the gas pedal to get it to start up better.

Maybe it's a completely different issue. You'll just have to check it out.

 

[98GST6BOLT]

ya it sucks i been tinkerin wit this thing for wayyy to long

 

[gsxtasy]

ya it sucks i been tinkerin wit this thing for wayyy to long

Welcome to the rest of your DSM life.

 

[98GST6BOLT]

ha yeah so ive noticed

 

[jrohner]

The one wire sensor is just for the gauge; the one with two wires on it is the important one. You need this one hooked up, period.

 

[98GST6BOLT]

ya and what do i do if its not. my harness doesnt have that two prong plug on it

 

[98GST6BOLT]

i forget what i thermostat housing i put on when i did the swap and idk if that makes a difference or not, but mine has the two prong thing in the front of the thermostat underneath the neck not going towards the back of the car like the pic shown.

 

[gsxtasy]

Yeah, that's where it is located on a 1g thermostat housing.

 

[98GST6BOLT]

so should i switch it over to the 2g thermostat housing? will that even fit on the 1g head?

 

[gsxtasy]

so should i switch it over to the 2g thermostat housing? will that even fit on the 1g head?

No, keep the 1g. I was just saying, you can switch the actual sensors in the thermostat housing if you want. However, if you have no plug, it won't do you much good anyway. You can try to trace the wires back, it should come out of the engine harness right around that area, along with the front o2 connector and a couple others.

 

[98GST6BOLT]

alright thanks, ill see what i can do tomorow about swapping the sensors

 

[gsxtasy]

alright thanks, ill see what i can do tomorow about swapping the sensors

You can also just connect spades onto the the two wires and hook it up to the 1g sensor. That's what I ended up doing.