check engine problem
 

ok i have a 95 B18B civic with a T3 T4 turbo chipped with a base map uberdata with RC 440s injectors and walbor 255 the problem im having is that my car has a hard time starting up with the check engine light OFF but when the check engine light is ON it starts up normal. the code that its throw is 6 (water temp sensor). when i drive the with the sensor plugged in the car runs like ----. every time i stomp on the gas the car would barely excelerate and it studders bad than when i unplug it and as soon a the engine light comes on the car run very good almost like how it should. if i get it tune will that fix the problem or is there something i dont know about? it is running very very rich. also i just rebuilt the engine could that have any thing to do with this problem? if someone can help i would really appreciate. just want to drive the car. thanks everyone

Re: check engine problem
 

check your wiring
sounds like you got a few plugs in the wrong place



oh yeah whats the code that might help

Re: check engine problem
 

the code is 6(water temp sensor) and im pretty sure the plug wires is in the right place cause it runs fine when the check engine light is ON. seem like it runs the best when its on limp mode

but ill check the plug wire tomorrow when in the day time

Re: check engine problem
 

are you OBD-1 or 2

Re: check engine problem
 

obd1

Re: check engine problem
 

what ecu do you have P28 P30 P06 ?

Re: check engine problem
 

my bad reading ins't my thing and im high

Re: check engine problem
 

im not sure what year the ecu is but it says p75. but why you ask about the ecu?

Re: check engine problem
 

its all good. your just trying to help

Re: check engine problem
 

who did your bin file for your P75 and who chipped your ecu?

Re: check engine problem
 

how often does the CEL come on? what are the normal conditions that make it pop up? i would guess it is the chip that is in your ecu. who did your basemap? even if it is a basemap it should still drive fine unless the guy who made it is a complete moron

Re: check engine problem
 

some guy on a local forum. i tried to put a stock ecu on the car and it does the same thing but than again i only tried to start the car for only about 3 mins. ill try it again and drive to make sure that it does the same thing on the stock ecu.

the ONLY time the engine light comes on is when i unplug the water temp senor. some how it was unplugged than i had to pug it back in cause of the engine light and that the problem im having now

Re: check engine problem
 

Re: check engine problem
 

so other then that it runs like complete ---- with no CEL? and it sounds liek you just got th emotor back in and started up after a rebuild, might want to triple check all plugs and grounds to make sure everythign is nice and tight.

Re: check engine problem
 

440s injectors on a stock ecu don't work to well it dumps way to much fuel. You as may want to check his soldering in the ecu to make sure he did i good job a bad connection could ---- it all up.

Re: check engine problem
 

your are exactly right. i did put new plugs in. NGK V power .044 cap. im going to double check every thing that you guys said tomorrow to make sure thing are the why there supost to be.

Re: check engine problem
 

did you forget to wire up the resistors with the new injectors?
oh and close the gap to about .029 to .032, .044 is way to big. for the record the best plugs to run on a turbo civic are the NGK BCPR7ES

Re: check engine problem
 

should i just put back the OEM injectors and ECU and see how the car runs? if so would i have to change back to OEM fuel pump as well?

Re: check engine problem
 

didnt think i had to do that on an OBD1 if that is the case than that might be the problem. So your saying i have to but a resistor on?

Re: check engine problem
 

there are differant impedence injectors, some need a resistor box or inline resistors to work properly. let me search and see if your RC's need them.

Re: check engine problem
 

thanks alot for all of you whos helping me

Re: check engine problem
 

if your injectors are saturated then you don't need resistors and if they are peak and hold you will need them. shoudl be a part number on the side of them, either post it up or type it into google. guess RC makes both so theres really no telling unless you know the part #

Re: check engine problem
 

i just went and look the number is RC SL4-440 and it think that it is saturated. that mean i dont need a resistor box right?

Re: check engine problem
 

yeah, hmm wonder what else it could be

Re: check engine problem
 

should i just change everything back to OEM like injectors, ECU. and do i have to change the fuel pump too? just to see what happens.

Re: check engine problem
 

shoudln't have to change the fuel pump but if you do change it back, don't boost on the stock map and injectors lol. just do it to try and narrow down the problem.

Re: check engine problem
 

ok im do it tomorrow as soon as i get off work. than i let you know how it is. thanks

Re: check engine problem
 

so i got home and change back to OEM injectors and ecu. the car ran fine now but the problem is when at a stop light when i go to press on the gas the car want to stall. it take a second or two to pick up but other than that it ran fine than when i get home the engine light came on code 3 (manifold absolute pressure. check the MAP sensor and circuit) so i turn the car off to change the MAP with a one off a working car. and now the car wont start. but it will probly start after the car cools down. so what is the problem now?

Re: check engine problem
 

ummmmmm. put a coolant temp sensor in it, they are cheap and it is the code it is throwing. Coolant temp will affect the ammount of fuel the car gets. I've seen cars run like ASS because of a CTS.

Re: check engine problem
 

when i put it back to OEM it runs fine but on the OEM ecu there is a engine code 3 than when i switch back to turbo mode (injectors, chip ecu) than it trows a code 6. they throw different codes between these two ecu's. but there is a problem they both ECU have. when i turn the car off when its warmed up i cant start the car back up until the car is completely cooled. i can turn the car on and off when ever i want when the engine is cool. does anyone know about this problem?

Re: check engine problem
 

It really sounds as though you may have a faulty temp sensor like darkelvis said. If the ecu thinks that your car is cold when its hot it will dump in more fuel because when cold fuel won't vaporize as well, and your car needs more fuel to fire. So it may be flooding the ---- out of it when its unnecessary. I would have tried that before changing out the injectors.

Re: check engine problem
 

will do im going to change it asap thanks