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| Buick Turbo Tech General technical support for the 86-87 Buick turbo cars |
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#1
11-01-2010, 03:14 AM
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new to this forum/ car falls flat
Hi I am new to this forum. also new to the turbo buick. my car is 87 GN. have installed a scanmaster, walbro 340 fuel pump w/hot wire kit. another set of stock injectors and a custom chip to match, k&n air filter set up, adjustable fuel pressure reg. The problem i have been chasing since i bought the car was a bad bog coming off an idle.with these new parts that is gone but now the car falls flat on its face just before it shifts into second gear. the boost seems to max out at 10lbs (replace the boost guage too)while this is happening the scanmaster always reads 4-6 degrees of retard. i will have to report the complete set of numbers from the scanmaster but i have noticed that the o2 flutuates alot but does spend alot of time at or above 800.my area is Worcester Ma so i do know you're close.Does anyone have any thought with what i got for info. will report back with a full set of numbers
thanks Paul 
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#2
11-03-2010, 06:33 PM
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Quote:
__________________
Jack Cotton Cottons Performance 413-789-0531
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#3
11-04-2010, 02:27 AM
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Thanks for the reply. I have got the simple stuff with regard to tuneup new plugs and wires(altho thats kinda what the miss feels like) pre turbo days with a point type dist and a bad plug. the chip(not sure whose it is) was supposed to be burned for stock inj and the cold air kit. I had it put in for me by a local guy here and am second guessing my trust in him now that he still cant get rid of this problem.says maybe i need a FAST system. I didnt say before but this does have a new module. have not done anything with IAC, but can with a little instruction.Also what can i do to check out the coil,cause like I said the power and pull really drops off severely before the 2nd gear shift,although because the scanmaster shows a little retard, I get right off it. I dont really know what it will do if i stayed in it.might go thru it or maybe not. what do i have to do to get a full set of numbers that you could use to help me out of the scanmaster. If you think I need another chip burned that I can be confident in, I'm open to that.
thanks for any help and advice you can give. Paul
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#4
11-06-2010, 07:24 PM
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i got 2 sets of numbers out of the scanmaster.maybe this will add some more info
idling in park i got 1150 rpm in park footbrake on 02 = 738 02 = 430-597 kr = 00 kr = 00 AF = 04 AF = 15 L8 = 34 L8 = 68 BAE = 14.3 BAE = 14 INT = 128 INT = 132 BL = 128 BL = 124 mph = 0 mph = 0 CLE =162 CLE 165 ATS = 63 ATS = 75 RPM = 775 RPM = 1150 TPS = .30 TPS = .54 IAC = 35 IAC = 71 CC = 27 CC = 73 again tho the problem is a bad loss of power and pull just before the shift into 2nd gear. I am hoping these number will be able to help someone give me some direction to go in with this thanks very much to anybody that can help me out Paul
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#5
11-07-2010, 12:53 PM
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I thought my numbers would come out in 2 columns.
the first column was at idle and even though the columns came out pushed together, the other numbers are just off idle. i have now corrected the key on- engine off adjustment of the TPS to .42 and WOT is now 460. so now the idling TPS reading is .44. now this has a very bad miss under heavy acceleration.can't hear any noise, just a very very bad miss
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#6
11-07-2010, 01:27 PM
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Tps read .30 at idle the way I saw it, needs to be .42-.46 at idle and the WOT needs to be 4.75 or higher.. but I really don't see that as your problem. I would like to know who burned the chip... and exactly when did you develope the problem, what did you do pryor to it skipping. If it ran fine what did you touch... what kind of spark plug and gap?
__________________
Jack Cotton Cottons Performance 413-789-0531
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