Efi code help

tatersalad

Bronco Guru

Joined

Jan 17, 2009

Messages

1,067

• Apr 30, 2012

• #1

I have a 351w tied to a c4 trans, bcb adapter with rjm and a9s.... everything has been running fine with the setup for about 8 months but now I am getting an intermittent check engine light while driving... it kind of surges while the light is on... I ran a koeo test and got all the soft codes that rjm says is normal but I did get an additional cm code 63 (TP voltage to low) Is there a way to test the TPS first, before buying a new one... all my sensors were used when I converted over to EFI and I assume that I will be replacing them eventually I just don't want to throw parts at it... Thanx

 

firehawk

Sr. Member

Joined

Jun 27, 2006

Messages

614

Loc.

Clawson, Michigan

• Apr 30, 2012

• #2

Those can be adjusted slightly but as long as you have the correct voltage going to it, it probably needs to be replaced assuming the wiring is fine.

 

BRONCO26

Sr. Member

Joined

Jan 17, 2006

Messages

508

Loc.

SENOIA

• Apr 30, 2012

• #3

You should have 5 volts on one wire, one is a ground and the other should have I think between . 50 volts to 1.00 volts with key on at closed throttle. Hope this helps

 

OP

OP

tatersalad

Bronco Guru

Joined

Jan 17, 2009

Messages

1,067

• Apr 30, 2012

• #4

codes

I unplugged it and hooked up a multimeter set at 20k ohms and it seemed fine throughout the range, no bouncing around... ran another koeo and got code 11 pass... I then ran a koer and got codes 12 (rpm high) and 26 (maf out of range)
going for a test drive next.....

 

jw0747

Contributor

Bronco Guru

Joined

Nov 22, 2006

Messages

2,434

Loc.

San Antonio, TX

• Apr 30, 2012

• #5

go here for info on setting TPS voltage...

http://www.muscularmustangs.com/tps.php

 

R

ransil

Bronco Guru

Joined

Sep 6, 2003

Messages

8,122

• May 1, 2012

• #6

a dead spot in the TPS is hard to see , a good multi meter with a min/max will help catch any dead spots.

any good junker always grabs spares when cursing the yards..

 

OP

OP

tatersalad

Bronco Guru

Joined

Jan 17, 2009

Messages

1,067

• May 1, 2012

• #7

It ran fine on the way to work this morning, but it seems to not act up unless it is warm outside.... I grabbed 3 of eveything need for the swap as i was going to convert a 75 beater to efi before I tackled it on my restored rig, but then the oil shaft on the restored rig snapped, I did'nt catch it in time and I sold the 75 for some cash to do this rig.. The problem is all those extra parts are currently about 100 miles away.. I don't mind putting new sensors on once they start acting up I just want to make sure I am not replacing the wrong ones... : )