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96 accord surging at cruise throttle

Hi all! '96 Accord E-XR Vtec. 5-speed w/ 360,000 kms (approx 220,000 mi)

Car runs pretty good considering its age.Engine light has been on for almost 8 months now but being a student and not using the car much, haven't had it checked. Car runs fine all around. Anyway, other day I stopped to top off my gas; car had run fine up to that point. I drive away and a few minutes later it starts 'jerking'. After several hundred kms of observation and a couple of bottles of fuel injection cleaner, this is what is happening: In any gear at between 2000-3000 rpm, the car lurches back and forth - violently when in low gears - like it was starved for fuel then got a sip but at a very rapid rate. Being a standard tranny, it's very noticeable. It DOES NOT appear to be related to the rpm's but rather the position of the accelerator. Whenever I am at a cruise - that is not slowing or accelerating it does this - in any gear. The moment I take my foot off the gas over accelerate- even lightly - the symptom disappears. Even with cruise control on at highway speeds it does this. On my way home last night, I kept the car in fourth instead of

5th as the higher rpms seemed to eliminate the problem. Aside from the engine diagnostic, any thoughts on what might be the cause. TPS? Thanks!
Reply to
MajBach
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what code are you getting from the ecu?

Reply to
jim beam

DOn't know how to do that and haven't taken it into the shop.

Reply to
MajBach

MajBach wrote in news: snipped-for-privacy@k79g2000hse.googlegroups.com:

It's cheaper to get the code read than throw parts on the car. Autozone will read it for free,I've heard.

Is Autozone in Canada?

The TPS is part of the throttle body,and not replaceable itself. The throttle body is not inexpensive. there are tests you can do to check the TPS in place;either measure the voltage output range,or ohm it out.

Reply to
Jim Yanik

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If it's the TPS it's SO EASY to confirm. Get an old-style meter with a needle and connect it to the TPS, set for 1,000 Ohm range. You'll see it move smothely, then spike to infinity when you hit the open spot, which corresponds to highway cruise RPMs. Google it and find a 'tuner' TPS replacement and it will probably even come with directions how to drill / Dremmel the rivets.

'Curly'

Reply to
motsco_

Reply to
loewent via CarKB.com
:

Godd to know- I didn't already. Thanks

Reply to
MajBach

Actually it's not that easy. As a matter of fact, yesterday I gave up trying to figure a way to get my mutlimeter at that unit. Changed a wheel bearing and my rad...which i found to be much easier.

Reply to
MajBach

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The diagrams at

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should help. I just walked outside and opened the hood of my CR-V. Reached behind the throttle body, squeezed the connector and slipped it off the TPS. Without bending over very far I can feel three pins with my finger. Put your (extension) leads on the center one and either of the others. When you rotate the throttle plate by hand you'll see you meter needle swing offscale when you hit cruise speed (probably about 2,600 RPM?).

Don't use a digital meter unless it has a good analog bar graph.

The original CR-V _does_ have lots of room under the hood.

'Curly'

Reply to
motsco_

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