s13 sr20det shakes like hell

[redline454]

for the past 3 months my s13 has been running fine then one day i turn it on and it has a lowww rpm 8-900 it was used to idling at around 1500. it doesnt want to accelerate at all. motor shakes like hell! im wondering if anyone had the same problems idk if its motor mounts, coils, something please help

[SHIFT_*grind*]

FYI, your engine is supposed to idle around ~800RPM. If it idles at 1500 you've got something wrong somewhere, like a vacuum leak.

As for the acceleration problems and shaking: Motor mounts aren't going to affect your idle speed. Check your coil packs, pull them off one at a time and see if pulling one of them doesn't affect the way the engine's running. If you find that, use a timing light to see if the coil is getting spark.

[Slow Poke]

Have you ever checked the timing on your motor?

[punxva]

yeah check your timing supposed to be 16*, look for boost leaks, your motor mounts are probably shot as well, as with most of the sr's rocking the stock mounts i've seen.

[reccakun08]

yeah check for vaccuum leak... ie intercooler piping