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-   -   stepping on the gas............ (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/stepping-gas-545252/)

jgrts20 05-30-06 02:22 PM

stepping on the gas............
 
.............and going nowhere, Ok my car runs fine and idles fine but every now and then you'll be driving down the road, step on the gas it goes nowhere. I pull over after car sux a crap load of air for a minute or two the bogging stops. This is acuiring around the 1000 rpm mark. Sounds like air is being sux though the pump or something. Ive changed the fuel filter and have the fuel pump to install, injectors on the way. It sounds like a fuel problem.............am I wrong?

Aaron Cake 05-30-06 03:07 PM

You expect the car to pull hard at 1000 RPM? :) Not going to happen.

Problems like this are often caused by the TPS being out of adjustment or having a dead spot. Aux ports working?

jgrts20 05-30-06 07:12 PM


Originally Posted by Aaron Cake
You expect the car to pull hard at 1000 RPM? :) Not going to happen.

Problems like this are often caused by the TPS being out of adjustment or having a dead spot. Aux ports working?

yes they are, how do I know if I have a dead spot(what does that mean)? do you have a link on the TPS adjustment?

Aaron Cake 05-31-06 08:53 AM

TPS adjustment is covered in the Factory Service (see FAQ) and Haynes manuals.

Finding a dead spot is a little harder. It really requires watching the resistance with an analog meter or measuring the voltage with a scope as you move the TPS slowly in and out. A dead spot will result in a huge jump or dip on the meter reading.

jgrts20 05-31-06 02:38 PM

is there a writeup on how I should check a dead spot, where do you stick the meter for readings? I did a search last night found info but not specifics.

thanx

Aaron Cake 05-31-06 03:53 PM

Grab a copy of the Factory Service Manual. It will show where to connect the meter for a TPS adjustment. That is the same hookup you use to check for a dead spot. I described how to check for a dead spot already. Connect an analog ohmmeter and slowly move the TPS in and out while watching the meter. Any sudden jumps or dips in the needle on the meter indicate a dead spot.

jgrts20 05-31-06 04:41 PM

Got it, my TPS was gummed up and getting stuck in. Sprayed some WD40 on the trottle springs and TPS all loose now. Thanx Aaron.


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