OK guys my Civic seems to be stuck in limp mode. it has a rev limiter set at 5500 rpms but will not go over 3000rpms. I've got a chipped p28 ecu and everything checks out ok with it. i tried a new jumper harness and nothing has changed. if any1 has any suggestions ......... i need this car up and running..........thanx

 

if there is no cel its not in limp mode id say the rev limiter needs looked at maybe order a new chip to burn

 

oh id also have the coil and icm tested

 

What do you mean everything checked out with it? Is this running on a basemap? How did you "check out" that ECU?

 

it did throw a cel but i couldnt read it which led me to believe maybe the jumper harness was faulty. tried a new jumper but it was the same.

 

in reguards to the ecu i had it checked and reprogrammed and a new chip put in but still the same outcome....no change

 

put on a new dizzy also ....didnt change a thing

 

You couldn't read the code? Why not?


Always check your codes, as they narrow your troubleshooting.

With the limited info, it really could be anything. I still wouldn't trust that ecu. Do you have a spare p28? I'd slap it in there and see what happens.

 

i tried another chipped p28 and its still doing the same thing. not sure why it wont let me read the codes. tried the stock ecu to see if it still throws a cel but it cleared.....now its back on with the p28 (both and niether one will let me read the code with the scanner) ive put on all new sensors - checked wiring and conections - tried a new resistor box - checked plugs and wires put in new plugs and wires....im lost....all i did was change the oil pan gasket drove across town to fill up and then this happened......

 

You can't read obd1 codes with a scanner.....

 

good call

 

But you can read it with a paperclip.

 

Im guessing she doesn't know how to do that

https://honda-tech.com/forums/acura-integra-6/ecu-abs-codes-here-978933/

women lol