Sharpie

Well i just bought a 1990 rx7 s5 today. I got a wierd problem when after the car warms up for about 10 minutes or so it just dies. The rpms drop below 500 and then it stalls. Does anyone know what causes this and how can I fix it?

Thanks in advance
Josh

1987mazdarx7

any lights or buzzers go off at all? maybe lack of coolant and its over heating.

cmanns

try giving it some gas, check for a vaccum leak...also your tps or throttle cable/idle needs adjustment

have fun!

1987mazdarx7

how do you adjust the TPS. i think i need to on my fc also

cmanns

I'd make a topic or check the archive do ctrl + f then type tps see what it finds on each page...

to my knowlage it measures how open the throttle plates are and does some yadda yadda...not sure exactly but it could be not measuring it right, etc.

Sharpie

Well if I give it gas the idle is good but as soon as i take my foot off the pedal it dies again.

I get no codes, but i dunno the person that had it before messed it all up because there is disconected wires

cmanns

Can ya take a pic where they are disconnected?

Also does it just shoot down? if you give it alil gas can you keep it at 1K< try for 800/700 ish with your foot on the gas, if it dies then I'd presume one of the wires are to blame or vaccum leak.

If not then maybe your throttle cable/idle is out of wack.

Sharpie

here are some pics of the wires :

These ones are by the air filter

These ones are by the battery

Icemark

those are all test connectors and not disconnected. They are not supposed to be connected to anything

Sharpie

makes sense anyone on aim wanna go through how i can fix this?

cmanns

forums are better people will beable to get the same help as you

those are test connecters like ice siad...

....try adjusting throttle cable..

Sideways7

iTrader: (7)

what is the idle like? Is it rough and uneven? Cause it sounds like you might have a vac leak. Once its fully warmed up and the idle drops all the way down it dies. Mine was like that too. I had to keep my foot an the gas a bit at stop lights to keep it from dying once it was fully warmed up.

dothacker

just adjust the screw on top of your TB (covered by a little rubber cap). use something flat to twist it till you get your desired idle. i bet you that your screw is all the way tight, loosen it up a little.

Sharpie

well the idle is wierd now sometimes it will stay at aroun 500-700 but other times it will just drop...

Now someother problems that I have are:
the headlights wont go up... and
no interior lights work

1987mazdarx7

aounds like you =might have a blown fuse or electrical problem

cmanns

time to fix your ground points?

bkg

yeah those 2 four are disconnected on my 88 also. You need tou check the wire harness look in a haynes manual cuz those light and stuff are connected so you can find the source I had a problem with the electrical on mine and the idle. MIne blew a rear inner O-ring so thats y mine wouldn't idle

Sharpie

I am gonna check all that stuff tomorrow. I am a little worried because the person before me installed an alarm and yeah it looks like a mess... God I was i wasn't such a cartard

Sharpie

Another thing is i found an amp under the storage container on the passanger side... Is this factory? Its a kenwood..