FCTURBODEUX

Okay I tried a search but couldnt find a clear answer, so please if anybody can help it will be appreciated .

I have: 87 turbo 2, 850 miles on rebuilt and streetported motor, exhaust, intake, smog/emmisions removed, and RTEK Stage 2 ECU upgrade. thats all on power mods

Problem: whenever the motor is cold it takes at least 5 tries to get it to idle for a lil bit with me slightly pushing on the gas, (pumping the gas doesnt really seem to work).

FCTURBODEUX

*bump*

its gonna be a bitch to start it tommorow morning maybe some 1 can the "RX7 Person Of The Day" I will vote for you 100 times (If this existed of course, lol)

re-rx7

iTrader: (3)

man i have the same problem i usualy just crank it and as soon as it starts jus give it a lil gas at a constant pressure.

micah

You have the cold start assist (thermowax) removed?

FCTURBODEUX

i have no idea how it looks like, but when i put the motor back in i did remove a lot of smog stuff and i might have thrown it out but then again i dont know where it goes or how it looks like (thermowax)

micah

Without the cold start assist.. you WILL have problems cold starting.. that should be common sense.

http://picasaweb.google.com/micaheli...11198487036834
http://picasaweb.google.com/micaheli...11207076971442
http://picasaweb.google.com/micaheli...11219961873346

Those are three pictures of the cold start assist (thermowax) setup. There should also be some ECU assistance and sub-zero start assist on equipped vehicles (mine doesn't ahve that). IF you have removed them all... You'll just have to put up with it.

FCTURBODEUX

so thats the only thing that could be wrong with it nothing else right? by the way thanks a lot for sharing your knowledge micaheli

micah

Is that sarcasm?

But yeah... could very well be your problems... warm weather is going away.. start getting used to it or get your thermo-wax on. Many people in warmer climates would be glad to send you theirs... hehe.

RotaMan99

Some how the "Thermowax" ended up in the "To Remove" list for the useless TB mod that would make almost no effect in performance anyways.

HAILERS

IF your talking about the engine not starting and hard to get started, then you might have failed to connect up the water thermo sensor on the back of the water pump housing.

IF not connected the ECU will default to a temp of 176* even if the water is just 80*F in reality. This higher temp would result in not enough fuel being delivered during STARTING. See the attached CHART for fuel delivery during STARTING i.e. less than 500rpm.

The AFM isn't used during START i.e. less than 500 rpm. Another thing that would compromise STARTING would be if the ECU did not see the START signal on pin 3B. IF the ECU does not see this START signal, then the ECU WILL use the afm for fuel delivery and that will also result in not enough fuel delivered during START.

IF your talking about keeping the engine running after a cold start, the above has nothing to do with THAT.

https://www.rx7club.com/forum/attach...6&d=1182728184

If you have a RTEK2.0, take a look at the water temp on it's screen. If the temp on the screen seems reasonable, then the water thermo sensor IS connected up and that is not your problem. The RTEK2.0 uses the water thermo sensor for that reading, so if follows that the water thermo sensor is connected up if you get a normal reading when looking at coolant temperature. If so, then disregard everything written above and look for the problem to be another thing.

micah

Actually, I'm pretty sure it makes EXACTLY no effect in performance. Only lightens your car by like 1lb.

FCTURBODEUX

wow thanks alot guys much more help than i expected. i will check my rtek to see the water temp, because i think i remember seeing on the rtek that a water temp sensor is malfunctioning

texFCturboII

iTrader: (17)

bingo.