2001 victory v92c bucks and dies at low rpm...

My 2001 V92C is cold natured. Try advancing the throttle assist/fast ldle and letting it idle for 2-3 minutes at about 2K RPM.

I had a very similar problem to the one you're having in my 90 single cam. Seems to be kinda notorious with 240sx. Step one buy yourself some maf cleaner. Has to be maff cleaner not carb cleaner. Disconnect battery. Unplug maf sensor and take out maf using a screw driver and/ or a 10mm wrench. Place maf on towel and spray liberally about 6 inches away. Don't use anything to clkean it just use the spray. Let it dry and plug everything back in. Step 2. buy some carb/ throttle body cleaner. Remove hose between tb and plastic intake hose and spray tb cleaner in tb. Rag off whatever dirt you can get. Now turn on car and with sonmone reving var to 2k spray 2 second bursts of tb cleaner into tb cleaner following label instructions. Continue doing untill you see no more dirt. Turn off car. Step 3. Remove aicv. (Air idle control valve. This is attached to tb by 4 10mm bolts. Be easy with these as not to break them in the tb. Once aicv is removed place on rag and using carb and tb cleaner spray liberally. Make sure you get all nooks and crannies. Let dry for 20 mins and replace. Lastly replace engine coolant temp sensor. Its 12 bucks at autozone and take 1 your on your dual cam. There are many write ups on zilvia and 240sx forums for this. Lastly set idle to 700 rpm by disonnecting trottle sensor and adjusting the screw on the aicv to 700. And then plugging the trottle sensor back in. This shgould fixc your idle problems and stalling proiblems. If not email me at [email protected]. I'll give you more suggestions. Let me know if this works

Starts for 15seconds then off? Sound like a big vacuum leak.Have someone start it and partially block the throttle body and search for that vacuum leak and repair it

Test the TPS Sensor & replace the front
O2 Sensors if they have 100,000 miles on them

Clean the MAF Sensor with CRC MAF Cleaner,
Spray the throttle plate with the CRC throttle body
cleaner

Check for vacuum leaks

You may have to have a shop smoke test the
intake & other items

Check the plug on the lower left frame. It's mounted in such a way the it can get water down in the connection after washing.

It could have condensation built-up, You might want to unplug and spray with WD 40.

Possible low fuel presure at idle. If new fuel filter does nt fix , then it will
require a new "fuel pump". Have you driven this car on low fuel level often?

Low / uneven idle problem can cause by a lot of components.

Dirty air filter

Dirty injectors + o-rings

Vacuum leak at intake manifold and vacuum hose.

Bad Idle Air Control Motor (IAC)

Low compression (170 psi + is OK)

Start cleaning and repair these trouble spots and see is there any improvement.

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For more advance DIY'er then you may try this.

Use a can of Berryman carburetor clean to locate the vacuum leak.


SEE SAMPLE PICTURE HERE


This is a 20-30 minutes job.

Vacuum leaks can occur in following locations.


Intake manifold AND/OR vacuum lines.


Intake manifold is not accessible unless the engine head if off.

You can still check the potential leak by spraying some Berryman near the intake manifold.

Listen for rpm increase after you introduce the Berryman (FUEL) at idle.


Do the same starting from the brake booster unit (the round unit) on the drive side fire all.

Carefully listen for increase of RPM right after to spray the Berryman to the potential vacuum spot.

Get a friend to HEAR the ROM increase or monitor for RPM on the tech.

DO NOT AIM the Berryman into any heat source.


PLEASE RATE my answer if it is useful to you.

relpace the fuel rail pressure regulator