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A Few R33 Issues.

Bleach1

By Bleach1,
in General Maintenance

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Bleach1 Proficient

Bleach1

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I recently had a timing belt done on my 95 r33 gtst. About 2 days later the engine started to stutter under load. Thats the best way i can describe it. It stutters at about 4000rpm and although it is mostly under load it will do it very slightly in neutral. The problem with this is it is intermittant. It will happen 2 or 3 times a day and then go away. Its only just started today and i had run my car until the fuel level was very low. Im not sure if this could be the issue.

Another problem i have is the tacho will intermittantly fail. The needle will just slowly work its way up the tacho while im driving it in incriments of about 500rpm regardless of what the engine is actually doing. And sometimes it works perfectly.

Any ideas???

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MacGuyver Mentor

MacGuyver

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I had that stutter thing as well when I put my timing belt in also, while driving and also while sitting at the lights. So I had to take everything apart again and re-fitted the belt and now it works fine. Could be that the belt is just one tooth out of place. Don't know about your tacho though.

"Mmmm, unexplained bacon."

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Bleach1 Proficient

Bleach1

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plug for cas in properly, give it a wiggle and see what happens

Checked that. Seems fine. Also i dont think refitting the belt will help. Its intermittant. It idles perfectly and most of the time it drives perfectly so i doubt its the belt.

Edited by Bleach1
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Sumo Mentor

Sumo

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Spark plug problem?

Coil pack problem?

Mate, it could really be anything. As its intemittent, you can only eliminate the possiblities. I would chase the spark related components first, then fuel, then air.

I have seen dry solder joins in Commodore ECU's change a cars idle. and by twisting the PCB the car will start idling fine....

Cheers

Sumo

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Bleach1 Proficient

Bleach1

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Just an update all. Tested everything to do with ignition no avail. Then drained some fuel. The stuff was brown and had particles all through it! Cleaned the injectors today, flushed the tank, replace fuel filter. Missfire is cured. This was contaminated optimax so im going to try and pass on the costs to the servo involved.

Still lost with the tacho though. Does anyone know how the tacho works on the r33? Is it just a change in resistance that directs the needle? If so it shouldnt be hard to remove the cluster, check the resistance and if everything seems ok it may be time for a new tacho. Although were is a wiring diagram and some test values available from?

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