Running on one rotor

VRx8 · Postby **VRx8** » Thu Oct 06, 2011 9:14

So my car has done this two times now. I start the car (cold) and and wants to die so I keep the engine running by giving it a little gas and it sounds like is running in one rotor so i rev it up a couple times and then it hold the idle just fine. Any ideas? Im running 9's all around. I checked the coils im getting spark on all 4.

Postby **RX-7 Chris** » Thu Oct 06, 2011 9:14

it sounds like a wiring problem to me. When the wires are cold the soldering joints sometimes split a little and don't get a good connection. Once the wires warm up, the solder will fuse back together.

It could be related to the injectors instead of the spark.

VRx8 · Postby **VRx8** » Thu Oct 06, 2011 9:14

You got a point because my injectors are in fact soldered.

speedjunkie · Postby **speedjunkie** » Thu Oct 06, 2011 9:14

^Are you talking about the wiring for the injectors? Like the resistors and all that?

Postby **RX-7 Chris** » Fri Oct 07, 2011 9:14

I had a similar problem with old rx-7 instrument cluster. I re-soldered everything and it fixed the problem.

Basically you don't have to add add solder, just heat the existing solder enough to redo the connection. If you know where the joints that are the problem could be, I could help you solder them.

chickenwafer · Postby **chickenwafer** » Fri Oct 07, 2011 9:14

I will send you a new tune Eduardo, but to me it sounds like fueling or ignition/electrical, like I mentioned in my PM.

With the ID injectors you DON'T need resistors so make sure you have any in your fuel injector wiring, they are high impedance injectors. If you do have injectors it could fry the injector driver board within the PFC rendering the ECU useless.

VRx8 · Postby **VRx8** » Fri Oct 07, 2011 9:14

there is no resistor on them.

speedjunkie · Postby **speedjunkie** » Fri Oct 07, 2011 9:14

Oh that's right, I forgot you got ID injectors.

JTurton7 · Postby **JTurton7** » Sun Nov 27, 2011 9:14

my car does the same thing like once a year or so, but my issue is that the wiring to the water temp sensor is iffy. So the car will be reading -32 degrees water temp and freaks out for a bit.

VRx8 · Postby **VRx8** » Sun Nov 27, 2011 9:14

it was a fouled plug

speedjunkie · Postby **speedjunkie** » Sun Nov 27, 2011 9:14

I'm glad it was something minor.

JTurton7 wrote:my car does the same thing like once a year or so, but my issue is that the wiring to the water temp sensor is iffy. So the car will be reading -32 degrees water temp and freaks out for a bit.

A new wiring harness will cure that, too bad they're around $800+ though haha.

Postby **RX-7 Chris** » Mon Nov 28, 2011 9:14

glad you figured it out.

Running on one rotor

Running on one rotor

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