imported_jdmcrxsi

It's a 1989 honda civic si i swaped in a b16 car would start but have a hard time doing so when i give it gas it would just bog out and stall then have trouble starting again i am getting a code 7 that is tps i have replaced that and still the same problem help please

chris_si98

$10 says you didn't calibrate the TPS and that is giving you your problem.

But usually it doesn't cause it to stall, but it might. YOu might have the firing order wrong, wrong ecu, etc. BUT first thing is first, calibrate the TPS. I believe I've explained it on here before, do a quick search on TPS it'll show up

imported_weiRtech

how to calibrate your tps:

1. unplug the connector going to the tps.
2. loosen off the screws mounting it to the tb.
3. take a multimeter and read the voltage when touching the two pins in the tps that give the output reading.
4. twist the tb plate fully open and completely closed. it should be at .5 and around 4.5v at opposed throttle positions... twist the tps a bit and adjust it until you get these readings.
5. tighten down the mounting screws.
6. plug the harness back into it.

have you also installed the proper map sensor for the engine you swapped in?

imported_jdmcrxsi

Proper Map Sensor? I Bought a Parts Car it came with the motor it still ran in the other car perfect idle no engine light it was a dx and he hacked the **** out of the harness so i used my harness changed the distributer connector and ran two wires on the ecu i disabled my second o2 and knock sensor
Havent tried calibrate the tps yet and im going to try tommorow

chris_si98

^^ sounds like your going to have fun with electrical problems.

I'd get a whole new harness..

zeeman

iTrader: (1)

The only problem with this is that if you disconnect the electrical connector on the TPS it won't be getting power.
You have to probe the TPS with the plug connected, it can be tricky if you don't wanna just shove the probe of your voltmeter into the weather protector around the wires on the plug.
If you don't wanna do that, get a little peice of a paper clip and stick it into the back of the plug (its smaller than the probe of the voltmeter), do this for each wire and just put the probe of the voltmeter onto the peice of the paper clip sticking out.

imported_jdmcrxsi

Ok Tps works now car starts runs great now temperature problem doesn't seem to get really hot always just above the cold line and when i drive it drops whats up with that?

And thanks guys for the support!!!

zeeman

iTrader: (1)

sounds like a problem with your thermostat.

chris_si98

I second the thermostat.

Change that biatch.

imported_weiRtech

i'm sorry, but you don't need to have power going to it to get a resistance reading. i've done this a few times on different tps to set them up... it is reading the resistance in the sensor as you open and close the throttle plate. i was wrong in my first post, you should be looking for ohms resistance readings, not voltage.

zeeman

iTrader: (1)

i just double checked my manual, and you're definately looking for signal voltage. Its 0.5V at closed and 4.5V at WOT.
If you wanna check for a break in the signal wire to the ecu, then you'd look for resistance between the TPS plug and at the ecu....no?

I distinctly remember when i had a vafc, it would give a voltage reading for the TPS.

imported_weiRtech

yes, that is correct, but to set up the tps WITHOUT any power whatsover you can switch your multi-meter to read OHMS RESISTANCE, NOT VOLTAGE and you will get a corresponding resistance reading that will help indicate the fully closed position and the wot position. i've done it numerous times when installing aftermarket tb's that don't come with a tps. it is much easier than trying the paperclip thing and just as accurate.

zeeman

iTrader: (1)

hmm....didn't know that....good stuff.
the paper clip thing sucks ***, i've only tried it once. When i had a vafc, i would plug the TPS i was calibrating into my harness and just watch the vafc TPS voltage readout, now i'll just plug my tuning ecu into it and watch the reading in crome....probing with a multimeter sucks IMO....but not everyone has a vafc or tunes with crome.
What i don't get, is why honda rivets some TPS sensors to the throttle body? Why not just use the torx bit screws like on the JDM engines.