Search found 15 matches

by GNG45
Sun Sep 29, 2019 11:56 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE Blacktop 20V IACV
Replies: 16
Views: 611

Re: 4AGE Blacktop 20V IACV

Remove the filter from the fresh air side of the ISCV and block the end of the tube with your thumb. You should be able to regulate the idle speed by varying the amount of "blocking" you are applying with your thumb. Tptally blocked the engine should either stall or drop to a very low idl...
by GNG45
Thu Sep 26, 2019 5:42 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE Blacktop 20V IACV
Replies: 16
Views: 611

Re: 4AGE Blacktop 20V IACV

First up you don't want your throttle cable to be tight. The throttle arm must return and rest on the throttle stop to make sure that the throttle butterfly is fully closed when you are off the gas, The cable itself should have just a little bit of slack so it cannot hold the throttle arm off the t...
by GNG45
Tue Sep 24, 2019 12:41 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE Blacktop 20V IACV
Replies: 16
Views: 611

Re: 4AGE Blacktop 20V IACV

jondee86 wrote:Cycling on the fuel cut... engine speed above around 1700 rpm and closed throttle.
Back the engine speed down to 1500 - 1600 rpm and it will stop doing that :)

Cheers... jondee86


You lost me there. What should I do?
by GNG45
Mon Sep 23, 2019 2:41 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE Blacktop 20V IACV
Replies: 16
Views: 611

Re: 4AGE Blacktop 20V IACV

Just an update. I changed out the plugs, reconnected the MAP, and shortened my throttle cable. There was some slack on it and I had no more tension so now the tension I can get it to sets the idle at is 2K RPM. I have feeler gauges coming tomorrow and I will adjust the TPS. My idle is erratic as see...
by GNG45
Wed Sep 18, 2019 4:38 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE Blacktop 20V IACV
Replies: 16
Views: 611

Re: 4AGE Blacktop 20V IACV

Make sure that the hose for the MAP sensor is not split or leaking. Check that the water temperature sensor for the ECU is not broken ior unplugged. Black plugs usually mean that the engine is running rich. Once you have checked the above put in a new set of plugs, then check the TPS setting and ig...
by GNG45
Sun Sep 15, 2019 1:24 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE Blacktop 20V IACV
Replies: 16
Views: 611

Re: 4AGE Blacktop 20V IACV

The ISCV modulates (changes position smoothly) the amount of idle air entering the engine by opening and closing as instructed by the ECU. If you like, it will change the engine speed much as if you were keeping the engine running by gently opening and closing the throttle a fraction. It is unlikel...
by GNG45
Sat Sep 07, 2019 11:46 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE Blacktop 20V IACV
Replies: 16
Views: 611

Re: 4AGE Blacktop 20V IACV

Hello, are there any USDM IACV's that are compatible with the 20V IACV? I bought a used one on ebay after experiencing a high idle with my old one and now I have a rough idle. Have you tried cleaning the valve (blasting carb cleaner down the tubes until no more black stuff comes out)?? Cheers... jo...
by GNG45
Mon Aug 26, 2019 3:22 pm
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE Blacktop 20V IACV
Replies: 16
Views: 611

4AGE Blacktop 20V IACV

Hello, are there any USDM IACV's that are compatible with the 20V IACV? I bought a used one on ebay after experiencing a high idle with my old one and now I have a rough idle.
by GNG45
Mon Jun 03, 2019 3:09 pm
Forum: TECH: 4A-GE ENGINE
Topic: Vacuum Line Question
Replies: 2
Views: 359

Vacuum Line Question

Can someone tell me what this line should be connected to?

https://photos.app.goo.gl/RTQCcmA4B22GkVZn9
by GNG45
Wed Apr 24, 2019 7:54 pm
Forum: TECH: 4A-GE ENGINE
Topic: 20v Blacktop Spark Plug Wire / Ignition Questions
Replies: 3
Views: 1569

Re: 20v Blacktop Spark Plug Wire / Ignition Questions

Any other suggestions. I use a 1UZ-FE distributor so I use this style boot for my 20V.

https://i.ebayimg.com/images/g/UFEAAOSw ... -l1600.jpg
by GNG45
Fri May 04, 2018 5:18 pm
Forum: TECH: 4A-GE ENGINE
Topic: Code 33, 41, 42
Replies: 5
Views: 1286

Re: Code 33, 41, 42

It's a blacktop 20V
by GNG45
Wed May 02, 2018 4:17 pm
Forum: TECH: 4A-GE ENGINE
Topic: Code 33, 41, 42
Replies: 5
Views: 1286

Re: Code 33, 41, 42

No I just unplugged the TPS. Anywhere I can find a vacuum routing diagram?
by GNG45
Tue May 01, 2018 2:08 pm
Forum: TECH: 4A-GE ENGINE
Topic: Code 33, 41, 42
Replies: 5
Views: 1286

Code 33, 41, 42

Hello everyone, I removed my intake manifold and IACV in order to clean the IACV and got codes 33, 41, and 42. I read that 41 and 42 are the TPS and MAP. I checked both and they are plugged in. In ideas on what I should be looking for?
by GNG45
Sat Mar 11, 2017 3:54 pm
Forum: TECH: 4A-GE ENGINE
Topic: Distributor Identification
Replies: 5
Views: 1737

Re: Distributor Identification

jdm86gtz wrote:Looks like a 1UZ-FE distributor cap


Thanks that was it. Now I gotta figure out what wires to use lol.
by GNG45
Mon Mar 06, 2017 6:53 pm
Forum: TECH: 4A-GE ENGINE
Topic: Distributor Identification
Replies: 5
Views: 1737

Distributor Identification

I have a 4AGE Blacktop in my 86 with this type of distributor. Can anyone tell me what kind of car it's for because I want to do a tune-up on the engine.

Image

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