The car is a 89 si hatch with a obd1 b18a1.

When the car sits for a few hours then u try to start it it cranks for a long time then will crank up. If it sits for about 10hours (over night), it will crank for a long time, fire up then die, then it will crank right up and die 2-3 times. On the 4th try normally itll fire up and stay running but when u touch the gas (first 1-2mins of running) itll have a delay and kinda bog.

It has the CEL on so i got the codes today:

6 ECT (which isnt plugged in due to having to rerun it to the thermo housing will be done tomorrow)

7 TPS

10 IAT sensor

14 IAC valve

The light has been on for about a day after i got it running. It started up no problems until
the past week, week and a half. Im guessing the ECT was just the only code until recently. Kinda suspicious that those 3 are all on since they are related... I am going to check my ECU wiring for the 4th time tomorrow to make sure its right (if anyone has the colors for the si wire for these to compare what i have would be great). If not i couldnt really see all 3 throwing a code. Any thoughts? thanks.

 

Check your grounds at the thermostat housing.

 

Is that where those ground at?

 

itll throw all 4 codes if the engine coolant temp plug is unplugged fixed ty

 

well i mean fixed as in those 4 codes are gone and i got a new o2 code (41) guess the civic's o2 will not work like i was lead to believe. good thing i kept my other one and the plugs so make it look factory

 

Still having cold start issues, I threw a ECT sensor code the other day i replaced it and redid my vaccum lines to make sure they were right and it fired right up. Let it sit for about 4 hours and it started on the 1st try but it cranked for a good 10seconds. Once it cranked i hit the gas a little and it bogged so i shut it off to brain storm what could cause it. Only code i have it for the O2 sensor heater (which i dont have my 4wire o2 on yet). Might be fuel related like pump is too weak for the b18 or fuel filter semi plugged?

 

Any ideas tried swapping the fuel filter and still nothing.

 

Any ideas tried swapping the fuel filter and still nothing.