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Author Topic: Need help diagnosing sputtering/hesitation issue...  (Read 1084 times)
spite
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brianroyal@msn.com brian_royal
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #15 on: June 27, 2008, 07:30:31 PM »

Nobody up here runs the CPR, so I can't say I've seen what problems with those would do. I have heard of them going bad and doing a variety of weird things, though.

If it's only doing it when it's warm, it's probably not timing.
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BFDeihl
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #16 on: June 27, 2008, 10:57:45 PM »

Travis, I have just about every CIS diagnostic tool available.  wave

Does your car run well enough to drive over?


 
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attackrabbit
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #17 on: June 28, 2008, 06:23:40 AM »

Travis, I have just about every CIS diagnostic tool available.  wave

Does your car run well enough to drive over?


Actually yea, I could make it over.  When are you available?  PS - I love you.
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #18 on: June 30, 2008, 07:55:41 AM »

Actually yea, I could make it over.  When are you available?  PS - I love you.
now, I'm jealous!  wave
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attackrabbit
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #19 on: June 30, 2008, 09:20:42 AM »

now, I'm jealous!  wave

I had a great time at Dannys, there was meat exchanged  dance!
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BFDeihl
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #20 on: June 30, 2008, 08:41:29 PM »

I had a great time at Dannys, there was meat exchanged  dance!

Moose burger BBQ planned for Friday...  thumbsup


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el sea
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #21 on: June 30, 2008, 09:18:53 PM »

where can i get my hand on some meat.......... love me some moose burgers
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #22 on: June 30, 2008, 09:59:56 PM »

where can i get my hand on some meat.......... love me some moose burgers

LC, you know I am your one stop meat dispensory, now, just arrive, close your eyes, open your mouth, here comes a surprise!
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #23 on: July 01, 2008, 11:52:30 AM »

So what the hell was the problem?

Dannys is always fun, I have to admit.

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attackrabbit
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #24 on: July 01, 2008, 12:12:02 PM »

So what the hell was the problem?

Dannys is always fun, I have to admit.

While at Dannys we swapped the fuel dist after dinking with all the timings...  Then played with the air/fuel mix.  Got rid of the hesitation issue all together.  Still sputters.  We think it's due to a vacuum leak at the intake and possible an issue with the CPR.  I'll be switchin them both here very soon...
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #25 on: July 04, 2008, 12:39:20 PM »

Update.

Swapped intake manifold, throttle body, new TB and intake gasket, new battery connector on the + side, new fuel injector cups...

Problem persists.  I'm giving up.  I'm going to take it to a shop on Tuesday.
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #26 on: July 05, 2008, 12:43:30 PM »

Did you check around for vacuum leaks with a can  of carb/brake cleaner?  It's worth a try for $4.
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #27 on: July 09, 2008, 01:44:27 AM »

Did you check around for vacuum leaks with a can  of carb/brake cleaner?  It's worth a try for $4.
oh yes it is!  when it revs, you've found the spot!!  dance!
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #28 on: July 09, 2008, 08:55:56 AM »

oh yes it is!  when it revs, you've found the spot!!  dance!

We did, the only indicator it gave was that the car changed rpms when we sprayed on top of the front of the intake manifold, right over the injectors.  Bugger is they are new o-rings.  This is why I replaced the intake manifold/gasket and the new injector cups.  I haven't tried it again since swapping all of that.  I spose I should.

Behavior of the problem has changed after all of this.  The problem now is a constant sputter, hot or cold.  I seem to have full speed of the car and almost full acceleration.  Just the damned constant sputter.

This weekend I'll probably do the timing belt, tensioner and shift linkage (5 speed box etc) and when I have money, bring the bitch in.
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Re: Need help diagnosing sputtering/hesitation issue...
« Reply #29 on: July 29, 2008, 08:35:12 PM »

How did you set your A/F ratio?
Just in case, simple way to do it is to unplug the O2 sensor and plug a voltmeter into it, wait for the car to warm up, then adjust your A/F so it reads as close to .5 volts as possible. If it starts jumping around all weird and shit, you still have vacuum leaks but if it stabilizes you're golden. That's if you're running a single-wire O2 sensor. Even if it starts jumping around a lot, it's a sign that your ECU and associated bits are doing what they're supposed to and you just need to do some housecleaning in the vacuum department.
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