help- (vid) tachometer bouncing everywhere & engine bogging
12-03-2018, 11:53 AM
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help- (vid) tachometer bouncing everywhere & engine bogging
yo guys so I have a 98 integra LS coupe 5spd, it has a problem where the engine is basically running like **** under load. it’s idling mint and is nice and stable most of the time, but during take offs from low rpm, or under a load like 4k+ rpm, the engine bogs hard and is like it’s not using all the fuel efficiently when I floor it, feels like the engine is clogged or something if that makes sense.
runs like poop under load like i said like 25% power loss. Engine kinda pops a little when under load and you let off the throttle, but no CEL for misfires or anything else...also very bouncy response when i give it hard throttle then let off immediately ... car literally bounces back and forth but that’s a diff problem
i don’t think it’s an actual tachometer sensor bad, more likely i think the engine is actually running according to the tach. aka inconsistent rpm, power loss etc
Ive seen suggestions to replace ICV, ignition control module, o2 sensor, etc. Tune up was done at 120k, the wires however were not done, and they are kinda rust by where they connect to the distributor- might be the cause? lemme know -
youtube clip- running a constant speed on highway
clip 2- 6k rev
runs like poop under load like i said like 25% power loss. Engine kinda pops a little when under load and you let off the throttle, but no CEL for misfires or anything else...also very bouncy response when i give it hard throttle then let off immediately ... car literally bounces back and forth but that’s a diff problem
i don’t think it’s an actual tachometer sensor bad, more likely i think the engine is actually running according to the tach. aka inconsistent rpm, power loss etc
Ive seen suggestions to replace ICV, ignition control module, o2 sensor, etc. Tune up was done at 120k, the wires however were not done, and they are kinda rust by where they connect to the distributor- might be the cause? lemme know -
youtube clip- running a constant speed on highway
clip 2- 6k rev
Last edited by free6ix9ine; 12-03-2018 at 03:59 PM.
12-03-2018, 01:05 PM
#2
Re: help- (vid) tachometer bouncing everywhere & engine bogging
You're seeing classic symptoms of the ICM in the distributor going bad. You can replace just the ICM or the whole distributor. The ICM generates the tach signal, and a twitchy tach is a nearly sure sign that the ICM is failing. Eventually it will get to the point where your car either won't start or will barely start.
If the engine was actually changing RPM that fast you'd be lurching and losing traction all over the place.
If the engine was actually changing RPM that fast you'd be lurching and losing traction all over the place.
12-03-2018, 04:02 PM
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Re: help- (vid) tachometer bouncing everywhere & engine bogging
You're seeing classic symptoms of the ICM in the distributor going bad. You can replace just the ICM or the whole distributor. The ICM generates the tach signal, and a twitchy tach is a nearly sure sign that the ICM is failing. Eventually it will get to the point where your car either won't start or will barely start.
If the engine was actually changing RPM that fast you'd be lurching and losing traction all over the place.
If the engine was actually changing RPM that fast you'd be lurching and losing traction all over the place.
as for your suggestion i’ll probabakt just get an ICM as it’s cheap
12-03-2018, 04:51 PM
#4
Re: help- (vid) tachometer bouncing everywhere & engine bogging
You're seeing classic symptoms of the ICM in the distributor going bad. You can replace just the ICM or the whole distributor. The ICM generates the tach signal, and a twitchy tach is a nearly sure sign that the ICM is failing. Eventually it will get to the point where your car either won't start or will barely start.
If the engine was actually changing RPM that fast you'd be lurching and losing traction all over the place.
If the engine was actually changing RPM that fast you'd be lurching and losing traction all over the place.
12-03-2018, 05:08 PM
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Re: help- (vid) tachometer bouncing everywhere & engine bogging
ok i’ll get some new wires and cap / rotor ! thanks guys
12-03-2018, 09:58 PM
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Re: help- (vid) tachometer bouncing everywhere & engine bogging
any suggestions on why my car is bouncy from take offs and acceleration/deceleration in super low rpms in 1st gear ?
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12-04-2018, 08:27 AM
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Re: help- (vid) tachometer bouncing everywhere & engine bogging
You don't need to bump your thread every 12 hours, stuff stays on the first page for a few days.
We already told you what's wrong with your car, your distributor is likely failing.
As for problems at super low RPM, well, you aren't supposed to drive at super low RPM, this isn't a V8 pickup truck. Some of the owners manuals actually say not to drive the car below 1800 RPM IIRC.
We already told you what's wrong with your car, your distributor is likely failing.
As for problems at super low RPM, well, you aren't supposed to drive at super low RPM, this isn't a V8 pickup truck. Some of the owners manuals actually say not to drive the car below 1800 RPM IIRC.
12-05-2018, 03:20 AM
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Re: help- (vid) tachometer bouncing everywhere & engine bogging
Im talking about bouncing from 0mph up to 1k rpm. I’m not driving around 15mph in 5th gear man. im sayin when I drive low speeds where I barely have to press the gas , aka neighborhood or parking lot, the entire car bounces front-back motion whenever I accelerate or decelerate, and I’m looking to make it run smooth. one of things that is not a very bad problem but it just makes the ride feel very honda-like if ya feel me on that.. I just wanna be able to pull up at a slow speed without this bouncing ****
12-06-2018, 05:14 PM
#10
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Re: help- (vid) tachometer bouncing everywhere & engine bogging
First thing you need to do is replace that rusted spark wires.
Replace the ICM and or the distributor.
Take off the VC, and pull out the spark plugs and check the gap and condition. leave the plugs out and manually turn the crank with a ratchet and bring the cam gears to TDC and check if the lines on the cam gears line up both the tops and the middle, This confirms your Mech. timing is correct. If its off this is the Main issue and reset the timing belt, the cams can skip a tooth or 2 causing your exact issues.
Grab a timing gun and check and set the ignition timing to spec.
Report back.
Replace the ICM and or the distributor.
Take off the VC, and pull out the spark plugs and check the gap and condition. leave the plugs out and manually turn the crank with a ratchet and bring the cam gears to TDC and check if the lines on the cam gears line up both the tops and the middle, This confirms your Mech. timing is correct. If its off this is the Main issue and reset the timing belt, the cams can skip a tooth or 2 causing your exact issues.
Grab a timing gun and check and set the ignition timing to spec.
Report back.
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