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View Full Version : car jerks when cruising normal


illusionsoflife
10-14-2010, 12:03 AM
If I'm just cruising at any speed in any gear the car will "hiccup/jerk" as if you tap the brake hard for a second and let go. At times if I accelerate hard it will idle really low and then high to catch itself and not die out. I've been told its possibly clutch related, fuel pump, throttle sensor, just woundering if anyone has any input on this. Also sometimes in first gear it will take off way faster than it should with me slightly pushing the gas then stop and go normal. Stock a3 with cai and 2.5 inch midpipe to stock muffler...mods been on for 3 years.
talonXracer
10-14-2010, 07:12 AM
First try a ECU reset, pull the ECU/FI fuse in the underhood fusebox for 60 seconds, then reinsert the fuse and start the engine and do a idle relearn(best to already warm up the engine before doing this).
Deadphishy
10-14-2010, 08:28 AM
It might be possible that you have a vaccum leak.
j0000stin
10-14-2010, 09:52 AM
dirty iacv
talonXracer
10-14-2010, 09:59 AM
Almost sounds like an erratic TPS signal.
illusionsoflife
10-14-2010, 10:50 AM
Almost sounds like an erratic TPS signal.

This was my thought....searched honda tech and came across this solution too but for older civics but still...
Deadphishy
10-15-2010, 01:36 PM
Almost sounds like an erratic TPS signal.

Sounds like my motor when it was hoovering right around the Map sensor Cut off pressure. the car is Clearly bouncing between closed/ open injectors,