2G 98 Eclipse max mph is 20 30 mph

[Iceman8079]

Bought 98 eclipse with bigger turbo and other upgrades replaced map sensor as well. Still has factory cat. No check engine lights or codes to reset. Was this king maybe cats r clogged only has 80xxx actual miles.

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[motomattx]

So your saying that the car wont go over 30mph but there is no codes?

 

[Iceman8079]

So your saying that the car wont go over 30mph but there is no codes?

Yes sir no lights on dash as well

 

[motomattx]

Is the car running like crap? misfiring? does the check engine light come on with the key on engine off?

 

[Iceman8079]

Is the car running like crap? misfiring? does the check engine light come on with the key on engine off?

No sir runs fine.

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[motomattx]

I would have to say to pull your air filter out to make sure that you dont have a nest in it, and check the car for a clogged catalytic converter then, is this car an auto? if it is, is it shifting properly?

 

[Iceman8079]

I would have to say to pull your air filter out to make sure that you dont have a nest in it, and check the car for a clogged catalytic converter then, is this car an auto? if it is, is it shifting properly?

I will check today. Car is a auto had been sitting for 3yrs before I purchased it. Guy explained that it had this issue is why he parked it.

 

[chrysler kid]

If the car is an automatic your throttle position sensor isnt plugged in, that's why the trans wont shift. Or youre having issues with the throttle position sensor calibrations.

Or your trans is blown

Or the transmission control unit is bad. (Tcu is the term, transmission computer is what it is)


Usually the throttle position sensor plug isnt secured all the way into the throttle position sensor, and you just have to plug it in and zip tie it into position

If the throttle position sensor has been replaced then you need to calibrate it using a voltmeter. Its a pain in the ass to do, so hopefully you havent touched it, because it involves using a volt meter and rotating the throttle position sensor after you loosen the screws that hold it to the throttle body. If you dont want to do all that then the best thing to do is to put a used non tampered with stock throttle body assembly with the sensor back on the car

 

[Iceman8079]

I would have to say to pull your air filter out to make sure that you dont have a nest in it, and check the car for a clogged catalytic converter then, is this car an auto? if it is, is it shifting properly?

Cleaned air filter. Same issue runs strong but when u push down on has wants to bog down. Like not enough full

 

[Stapl3]

A 1g I bought had this issue, thing was slower than a bus. Turbo was seized.

Also check the TPS plug.

 

[Iceman8079]

A 1g I bought had this issue, thing was slower than a bus. Turbo was seized.

Also check the TPS plug.

Thanks I'll check first thing. Also it still has gas from 4yrs ago in it was told it could just need new fuel high test and injectors cleaned

 

[motomattx]

You could also have a boost leak or a mass air sensor hose leaking.

 

[Iceman8079]

You could also have a boost leak or a mass air sensor hose leaking.

Ran premium 93 in car put injector cleaner runs smooth. How can I check turbo don't hear it but boost is building.

 

[motomattx]

Pull the intake tube from the front of the turbo inlet and spin the blades by hand and move it up and down to check for noise, binding, or play.