ive got a b18b in my 97 coupe.

ill be driving normally, and when i hit a bump, the car boggs, the check engine light flashes, and my tach and speedo jump.

even when i coast (not on the gas) over a bump, the same **** happens

the check engine light doesnt stay on, it just flashes real quick, then shuts off.

it seems like my car drives normally, untill im on a bumpy road.

any one have an idea?

 

You have a loose connection somewhere.

 

hey, kinda sounds like that whole deal about bad soldering in a main relay... but im probably wrong, its gotta be a loose connection from doing your swap.

 

ok a loose connection...

where should i start looking?

what connection would cause my car to bogg, or my tach and speedo to jump?

thanks for the help

 

Distributor?..just a wild guess here.

just pop the hood and squeeze all your connector together.

 

any one else have an idea?

 

You have a lose connection on the ground terminal for the ecu and its located by the thermostat housing by the water temp sensor.

Let me know what happens ?


Modified by CRXVTEC305 at 10:06 AM 8/17/2005

 

see what the code in the ecu is for and then just find that sensor and follow the wires back to the ecu...done

 

do you have a picture? sorry, im not too sure what im doing...

 

"see what the code in the ecu is for and then just find that sensor and follow the wires back to the ecu...done"

i would, but the check engine light doesnt stay on. it just flashes once, then its gone.

 

can someone help me find the "ground terminal for the ecu"??

 

Good advise from CRXVTEC305 - Its easy to overlook. Follow the radiator hose up to the thermostat cover. One mounting bolt on the T-Stat cover is a ground point. It could be dirty and or loose.

 

follow the lower radiador hose it will lead you to the thermostat housing there is a 10 mm bolt that is the ground. check if its lose

 

CRXVTEC305 - THE BOLT WAS LOOSE it was really loose actually. i took it out for a spin, everything felt normal.

BUT when i took it past 5k rpms through a couple of gears, the check engine light came on....

ill have to go see what that is.

thanks for the help though,

 

it almost sounds like something with the ignitor in the distributer. tach bouncing, ect, i bet one of the spade connectors on that is loose, put the dizzy car off, then rotor button and plastic shield thingy and u will see about 4 spade connectors attached to the ignitor, make sure those are all tight and the screws they attach to as well