After a wash, won’t go over 2,700 rpm?

[BaTora]

Hi,

I wanted to clean my engine and the compartment yesterday. I picked up some spray from AutoZone, and was careful to cover and tape the coil (pulled the main wire to make it easier), the battery, and the distributor. I sprayed, let it sit, scrubbed a bit, and rinsed. I used a towel to wipe down, and then removed the tape and coverings.

The engines started fine, idled fine, and I thought I was on my way. I took off down the street, but as soon as I got to 2,700 rpm’s the fuel seemed to simply shut off. It didn’t die, but picked back up around 2,200 rpm’s. I limped back home and found that some water got into the fuel injector clips. I took each one off and cleaned it out (blew what I could, used a bunch of baby’s q-tips to wick up the water and dry the unit). Unfortunately I had the same problem, and now the next day it’s the same thing…

I can start up, and idle. I can drive if I shift gears early and keep the rpm’s down. If I am parked and simply open the throttle, it cuts at 2,700 and picks back up at 2,200… over and over and over.

Help please.

BaTora

[5thhorsemann]

Blow the motor off with a good leaf blower, NOT COMPRESSED AIR as that can cause a host of problems, after an engine bay dousch. You likely got some water in an electrical connection or somewhere else it dosn't belong. Also, pressure washers are a no no, they can blow gaskets and all kinds of other damage.

What year and model, that info could get you better more specific things to check.

[Zed Head]

Sounds like TPS. It's under the black cover on the throttle blade shaft.

[240260280z]

http://atlanticz.ca/zclub/techtips/tps/index.html

[BaTora]

Thanks for the direction... I just used a light sprinkle from the garden hose, no pressure.

Sorry I forgot to put the year... It's a 1977 280z 2+2.

[Oiluj]

Also, use some carb or electrical connection cleaner spray on all the electrical connections to displace any moisture.

[BaTora]

Yay!!! It turned out to be the clip on the top of the TPS. I cleaned it the same way I cleaned the fuel injector clips and the car ran great. Around the block turned into 20 or 30 miles...