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View Full Version : 1993 TR Wagon 3L V6 - Hesitation/Misfire



benzau
02-10-2010, 03:11 PM
I've had a search through this, and I just wanted to get anyone's opinion on this.

I've got a 93 TR Wagon, 272,000km on it. It's doing the usual burn oil / blow smoke etc, but it's still a champion (His name is Marvin William Shagna for reference).

Anyway, since I got him, he's had an issue when warm.

When he's cold, he runs fine, drives fine and smoothly with maybe one little hesitation and miss.

When he's hot, anywhere from 1900-3500rpm causes a severe "chugging" feeling, it feels like a heavy miss, or perhaps the car isn't running on all 6 cylinders. If you keep your foot into him, he'll quite happily come to life quite lively above 3500rpm and run all the way to the redline.

So far the previous owner has replaced the AFM and Leads. I'm unsure of the condition of the plugs.

Any ideas for an easy fix? Has anyone encountered this before? I've got a fuel filter sitting here waiting to go in, and 6 new plugs. I'm wondering if it's potentially a coil issue? Or maybe even a TPS issue?

Any light anyone can shed would be most appreciated.

Cheers
Ben

MadMax
02-10-2010, 04:25 PM
Coils work or don't work, there is no in between. My V6 had a missfire caused by a burnt exhaust valve at 237,000 km, so it might be worthwhile to check the compression. The condition of the spark plugs will tell you if any cylinder is not getting up to temp through poor ignition, or running too lean.

95ts
02-10-2010, 08:33 PM
yeah check ur plugs and let us know, also check the leads anyways you never know, buy a 50.00 compression test kit from autobarn and do a compression test while you are checking your plugs