Engine Stumbles when accelerating - Page 2

Spartacus · 05-14-2011, 03:17 AM

1986 Automatic

I'm trying to figure out what is causing my engine to stumble.

I have already replaced spark plugs, rotor, distributor cap, wires.

No codes are coming up, TPS, coil are both good. Cleaned throttle body.

I'll just describe how I have been able to recreate the problem:

I'll start the engine (hot or cold), then floor it until I get to about 30 mph (engine runs fine during this part) and then I let off accelerator. Anytime I try to accelerate after that, the engine stumbles and the idle speed is erratic, even stalls sometimes if stopped at a light.

Any help is greatly appreciated! Thank you!

05-14-2011, 03:17 AM	#1
Spartacus Stock Join Date: Apr 2011 Location: Washington D.C. Posts: 6	Engine Stumbles when accelerating 1986 Automatic I'm trying to figure out what is causing my engine to stumble. I have already replaced spark plugs, rotor, distributor cap, wires. No codes are coming up, TPS, coil are both good. Cleaned throttle body. I'll just describe how I have been able to recreate the problem: I'll start the engine (hot or cold), then floor it until I get to about 30 mph (engine runs fine during this part) and then I let off accelerator. Anytime I try to accelerate after that, the engine stumbles and the idle speed is erratic, even stalls sometimes if stopped at a light. Any help is greatly appreciated! Thank you!

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Engine Help!	born2drv	MKIII Supra	9	02-01-2011 08:14 PM
rebuilt hard to crank (high engine resistance); need advice	cbrewster	MKIII Supra	4	09-28-2009 04:52 PM
problem seperating engine from manual tranny	Gengus	MKIII Supra	7	01-29-2008 12:10 AM
subtle shuttering when accelerating on a brand new engine	suprascoot	MKIII Supra	2	07-24-2007 11:27 AM