FreshLude420

I own a 1995 prelude, has a swapped h23a1 in it. The problem started when the car started to rev back and forth from 0 to 2000/3000 RPM's when the car was in neutral. Car throws the check engine light, never bothered to check it yet just automatic thought it had to be the Throttle Position Sensor. Go to advance and luckily they had one in stock. Take throttle body apart so we could rivet out the old screws so we could put new sensor on. Gasket broke so we used a sealing paste on intake... Get all together and check voltage, suppose to read .5 when fully closed throttle and 4.5 wide open throttle. The voltage read *** backwards, 4.5 closed and .5 open..... We read the voltage with map sensor in and the grey connector plugged in with pins in wire 2 and 3 when we tested it. Which would be red and yellow wire. Started car and it got worse, it straight revs to 4000 RPMS and stays there, when you let out on clutch it just goes. We are sure the the little black thing is in place when we put sensor on. One of my other friends said if its running *** backwards take the connector and switch the red and yellow wire. Did that and it read .1 closed and 5.1 open and still did the same thing.

Pulling the CEL tomorrow, but would like to have a idea of what it could possibly be.

Im think either the sensor they sold us is faulty, or the sealing **** we used for the intake might be letting extra air in.

Changing the idle didn't do anything.

Help and ideas would be much appreciated, been working on it past 10 hours in 2 days..

holmesnmanny

TPS's rarely go bad. Your mission is to go to the junkyard and remove another throttle body and install it to your car. Put all wires back where they were using butt connectors that have heat shrink(these should be red in color). Connect em, light the heat shrink with a lighter until it seals.

Then retrieve the engine code that actually corresponds with what the actual problem is with your car.

98vtec

Yea i am not too sure of the thought process here...

FreshLude420

Thanks for the post but we know for a fact it's not the throttle body itself.... The car had a motor swap and a lot of the stuff when they swapped it was bought fairly new. We ended up taking the throttle body off the intake again and used a razor to get that cheap RTV paste off it. Got some LocTight **** that is supposedly better. Tried her today and it's still doing the same thing. We have yet to try the code because we can't find the wire, think it's suppose to be blue but only one we could find is yellow, looks the same though.

Still looking to see if we can get a better idea of what it possibly could be. Next step is to just order the gasket that needs to be there and bolt her up see if that will make it work.

EDIT: BTdubs the junkyard is about a hour away, so we want to be sure before we drive and try to get this crap

98vtec

No need to post again until you have a code. The dtc service connector is under the cd player.

Bouckaroo

Did the tps get mounted correctly? as in not backwards?

holmesnmanny

Simply put, you fucked up the throttle body probably to the point that you won't know how to fix it correctly. Get another throttle body, put it back on. Put the wires back the way they were, before you screwed them all up.

Get the code so you can fix the actual problem.

When you get the code you can work on fixing the actual problem.