jdmjackson

ok so picked up an Ek hatch with a b20b swap seems to run good minus a few things. noticed the car is running and obd0 TB and its converted to obd1. and got a code for tps, and coolant temp. also i just replaced the coolant temp sensor

1. okay so 1st thing in the morning itll start and idle rough 2-300 rpm and die unless throttle is added, sometime the car is fine tho. then when its driven a bit its fine. when it stalls i go to start it and i get nothing but a click, but when its warm starts no problem.

2. driving all fine hit and bump and itll sputter or missfire for a second then back to normal. i check the cap and rotor and they need to be repalced, i just did plugs today im assuming the missing is coming from the worn cap/rotor.

so im assuming to take car of the tps problem id have to get a proper obd1 TB and re calibrate the tps, and put the map sensor onthe TB where it belongs?

Former User

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jdmjackson

oops thanks!

MRGRIM

iTrader: (1)

if you replaced the temp sender for the ECU code did you do the correct one as there are 2

the sender with 1 wire is just for the dash Temp gauge will not throw codes
the sender with 2 wires is just for the ECU also the cause of code fault ECT

a problem with the ECT can and will cause the problems you have described

re hitting a bump causing problems
try having the engine run and wiggle n push around your wiring loom at diffrent points in the bay you might find a loose connection or plug that is loose or fowled

jdmjackson

i replaced the actual sensor, 2 wire with the plug. as for the missfire we tried to wiggle the harness while running gt nothing. i know it needs a cap and rotor asap so thatll be my next step.

could the random miss over bumps come from a loose ground?

MRGRIM

iTrader: (1)

its could be a loose ground
or it could be a loose connection or corroded
or a short through wires haveing rubbed together or shorting

jdmjackson

thats my guessi dont like the ground it hasfor the tranny, will try to up the size aswell, as for when i started it today it cranked for a bit then was missing running rough shut it off ran fine after :/

jdmjackson

bump!

jdmjackson

ttt anything?

jbpnoman

Have you replaced the cap and rotor yet?

HondaPartsHero

Have you checked what the voltage is on your current TPS?

https://honda-tech.com/forums/tech-misc-15/diy-how-calibrating-voltage-your-tps-sensor-2947986/

MMMGIRL

Same thing happened with my B20B swap, I tried everything I could to fix it until I broke down and did a leakdown test. I had massive bent intake valves. Changed the head and havent had a problem since