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Civic hesitation problem...
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#11
 
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Re: Civic hesitation problem... -
05-12-2007
, 02:13 AM
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"Matt Ion" <soundy106 (AT) gmail (DOT) com> wrote in message news:NE21i.173204$DE1.115546 (AT) pd7urf2no (DOT) .. Buddy of mine just rebuilt (with all OEM parts!) a D16A6 with PGM-FI for his '89 Civic (including the appropriate computer and wiring harness). Got it installed, turned the key, engine turned 3 times... and fired right up. Very nice. Idles smoooooth and quiet... But when he gives it any gas, even just sitting in neutral, it bogs and hesitates. Hit the gas too fast, and it just sputters and dies. Do it carefully, and once it gets 1800rpm or so, it works fine. It also seems to idle a little bit rich. Thoughts? Ideas? He's checked for error codes, but it's not giving any. TIA Just a thought...Some of these systems take a bit of time for the various processors to synch and get a baseline established. I don't know about the Honda Civic but I do know that the Chrysler takes a day or so to get completely normal. |
#12
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Buddy of mine just rebuilt (with all OEM parts!) a D16A6 with PGM-FI for his '89 Civic (including the appropriate computer and wiring harness). Got it installed, turned the key, engine turned 3 times... and fired right up. Very nice. Idles smoooooth and quiet... But when he gives it any gas, even just sitting in neutral, it bogs and hesitates. Hit the gas too fast, and it just sputters and dies. Do it carefully, and once it gets 1800rpm or so, it works fine. It also seems to idle a little bit rich. Thoughts? Ideas? He's checked for error codes, but it's not giving any. TIA It would really help to separate mixture trouble from ignition trouble. How |
a bit? The timing should advance a few degrees, but not jump fifteen degrees
or retard a lot. (It may retard some based on the rise in MAP.) Similarly he
can try adding a squirt of starting fluid into the air cleaner a second
before he opens the throttle to see if that improves the response - which
would point to a lean mixture on throttle opening.
Mike
#13
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"Matt Ion" <soundy106 (AT) gmail (DOT) com> wrote in message news:NE21i.173204$DE1.115546 (AT) pd7urf2no (DOT) .. Buddy of mine just rebuilt (with all OEM parts!) a D16A6 with PGM-FI for his '89 Civic (including the appropriate computer and wiring harness). Got it installed, turned the key, engine turned 3 times... and fired right up. Very nice. Idles smoooooth and quiet... But when he gives it any gas, even just sitting in neutral, it bogs and hesitates. Hit the gas too fast, and it just sputters and dies. Do it carefully, and once it gets 1800rpm or so, it works fine. It also seems to idle a little bit rich. Thoughts? Ideas? He's checked for error codes, but it's not giving any. TIA It would really help to separate mixture trouble from ignition trouble. How about a timing light to see what the timing does when the throttle is opened a bit? The timing should advance a few degrees, but not jump fifteen degrees or retard a lot. (It may retard some based on the rise in MAP.) Similarly he can try adding a squirt of starting fluid into the air cleaner a second before he opens the throttle to see if that improves the response - which would point to a lean mixture on throttle opening. |
suggestion.
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