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Hesitation issue?

 
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Old 07-18-2014, 09:14 PM
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Hesitation issue?

I've researched around and can't seem to get an answer. I have a decently bad hesitation problem in low rpms. It stumbles bad up until 3,000 and it clears up and runs fine until you get back under 3k. I just had the egr port plugs cleaned, egr valve cleaned, new spark plugs. I've also unhooked the battery and tried to get it to relearn itself that way and still no luck. What's left?! What's wrong with my car?
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Old 07-19-2014, 02:15 AM
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Re: Hesitation issue?

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Originally Posted by TypeT View Post
quick what to do list

usually these things fix bad idle or/and hesitations:

- new spark plugs & wires
- new distributor cap & rotor
- new air/fuel filters
- clean injectors/iacv/egr/fitv
- bleed the coolant
- new pcv
- adjust valves and ignition
- adjust idle from tb's screw and throttle cable
- check does sensors work properly: map, iat and tps (and try calibrating tps)
- then check wires, connectors and hoses

check o2 sensors and vacuum/exhaust leaks (check all the seals - IM/header/TB gaskets, injector seals, maybe even buy valve cover gasket set...)
check timing. after that: double check timing

clogged cat might you give some trouble as well (usually when driving) - check cats condition

those are basic maintenance as well.

Try harder
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Old 07-19-2014, 09:06 AM
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Re: Hesitation issue?

All Gen. Prelude Service Manuals
^^ this might help ya.

Unlike the old days where it was either a clogged fuel line (or filter), a carburator, a distributor not advancing, a rotor button, plugs, points or wires that would likely cause hesitation, theses cars come with sensors, vacuum hoses, more sensors, computer speak, and a couple dozen other possibilities.
Welcome to the new world.

Have you checked your air filter lately? Any CEL codes? If so...stop unhooking your battery and allow codes to store. If you don't have a reader many advance auto stores will read 'em for you until you decide to break out $50 and get a basic reader.
Is it hard to start when cold? Warm? At random?

Since it clears up at 3000 that is a symptom of something that senses the lower end, say the tdc or cps sensors? I'm guessing here. But like I said since it gets better above 3000 that is a clue that it's not the fuel filter, a rotor or that type thing but maybe the throttle position, map or other sensor.
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welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
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Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
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I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 07-19-2014 at 09:15 AM.
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Old 07-19-2014, 09:32 AM
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Re: Hesitation issue?

What should I do for a cap and rotor? Just go to autozone and get a dura last one? Get an msd cap and rotor kit? What would be best?
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Old 07-19-2014, 09:37 AM
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Re: Hesitation issue?

It doesn't have any cel codes, I unhooked the battery because I read online that someone has done that and it got rid of their hesitation issue because it made the car relearn itself so I figured something so simple is worth a try. As for a hard start, I do have to say that it does have a long start but only VERY rarely. I've had the car for about 2-3 weeks and I've had that issues maybe 1-2 times. It would just crank longer than usual, probably 3 seconds longer than usual, and that's never in the morning when I first start it.
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Old 07-19-2014, 10:33 AM
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Re: Hesitation issue?

Good answers!

Which car do you have? You didn't specify. I'm looking at page 11-82 of the 97-98 manual to try to figure out my random hard to start/ occasional bucking bronco at steady 2500 rpm thing. It's the page to begin searching for why it misfires.
Been doing it for a while with no codes. But finally I'm getting codes.

Check your spark plugs, wires, distributor, fuel pressure and ignition control module. 'The book says' they can cause acceleration issues without sending codes.
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Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
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Old 07-19-2014, 10:43 AM
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Re: Hesitation issue?

I have the type sh model. Thanks for the answers! The plugs are new I just did them a week ago, the wires were on it when I bought it but they are ngk wires. I was thinking of doing a cap and rotor, would it be ok to use a dura last autozone brand cap and rotor or should I do an msd cap and rotor?
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Old 07-19-2014, 11:33 AM
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Re: Hesitation issue?

I just went out and drove the car (first time started since yesterday) and it had no hesitation when cold. Once it started to warm up and start registering a temperature it progressively developed a worse hesitation. So it would be safe to say that when it's cold it doesn't hesitate.
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Old 07-19-2014, 09:28 PM
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Re: Hesitation issue?

A cap and rotor solved my issue(s).

Take your cap off. Check the contact points on it and your rotor button. Mine was all chalky. I bought stuff at advance because the parts dept at my local stealership was closed.
I needed plugs too.

Bottom line, if a new cap clears it up, you'll buy time to get a better one if you choose.
Have you checked your coolant for air bubbles? Trapped air can fool your idle control sensors to thinking hot/cold/hot/cold coolant going past them.
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Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
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Old 07-22-2014, 01:49 PM
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Re: Hesitation issue?

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