hav u had 13b nt cut out at 4000 rpm

[lcrotaryracer]

i have a 87 nt 13b that cuts out spits at 4grand but sitting still i let out of the gas for a second and puch it , it will go up some but its a prosess to get to 7:banghead: if u know how to make my rx7 run better please tell me how

[SpooledupRacing]

Possible TPS needs adjustment look under "3800 RPM hesitation"

I would also do the following if u have not recently:

spark plugs (OEM NGK)
plug wires (OEM NGK)
fuel filter


Could be bad secondary injectors.

Let us know.

[lcrotaryracer]

thanks for the addvice new plugs are in fuel filter going in

[Mobius]

Make double sure that your plug wires are working and that they are in the correct order. T1 is the top (trailing) plug on the front rotor (closest to the front of the car). L1 is the bottom (leading) plug on the front rotor, and vice versa.

I know a couple of people who have made this mistake, one guy even went as far as buying a spark amplifier before the problem was realized.

[lcrotaryracer]

iam getting good fire and good power. wires are right . i mean very good power to 4000 rpm the car has 142000 miles and looks like the engine has been replaced or rebuilt

[Ender]

Did you ever get anywhere with this? I seem to remember some people having trouble with the secondary injectors firing because of either not having the injector resistors when they needed them or having them when they didn't need them. I believe it has something to do with the year of the ECU as to whether you need the resistor pack or not.

[FerociousP]

I regrounded a wire going to the ECU (#10 something maybe?) and it fixed my 3800 hesitation in my 87. Did it at the ECU to one of its mounting bolts. Grounding the same wire at the block didn't work. someone has a write-up.

[Phoenix7]

Also check the auxilary (5th and 6th) ports to make sure they're opening.