I neeed help and info please - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-20-2007, 03:55 AM   #1
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well bad news is my bonne got smashed so i then found a 92 town car which is the 2nd best car i have ever had 1st was my 81 bonne any way tanny going out on the town car ford built JUNK trannys so i got a buick grand sport 4 door 93 for free Go 3800 v6 ok i will get the the point of this post


when i went to pick the buick up it has a really bad miss in it .... so back it darn neer snaps your neck when it stubles and it want as well as dose killes so i took it to the parts store they scaned it and came up with 4 codes went like this

1. crank sencer 18
2. history cran sencer 18
3 o2 sencer
4.masaireflow

ok so i thought start with the hard stuff so i change the crank sencer when i was done it ran good for like 3 mins then right back to missing so i ran it to the parts store and had it scaned and it went like this

1. crank sencer 18
2. history cran sencer 18

so here i sit with a car that has somewhat of a new 3800 in it got 60,000 miles on it that misses so if Anyone could point me what to looki in to you would be my hero thank for your time and BONNEVILLES Rock lol Josh
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Old 07-20-2007, 10:52 AM   #2
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Have you considered that maybe the miss is a bad coil, old plugs or that one stray plug wire that is laying on the exhaust manfold without any coating?

While that last one is a joke..it'* quite possible.

On the crank SENSOR code, was this code cleared when scanned?
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Old 07-20-2007, 11:43 AM   #3
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the code should clear when the batt is nuhooked or no?
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Old 07-20-2007, 12:18 PM   #4
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No.. not necessarily. It takes a certain amount of time..but history needs to be cleared or it will always show up.
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Old 07-21-2007, 09:11 PM   #5
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how can i test the coils
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Old 07-21-2007, 09:17 PM   #6
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Click on the Techinfo link at the top of the page.
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Old 07-23-2007, 03:49 AM   #7
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still no more ideas why this 3800 missfireing?
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Old 07-23-2007, 09:22 AM   #8
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Please give us an update. Did you test the coils? What else have you tried?

Did you replace your crank sensor? Clear the codes to see if it comes back? Check the wiring to the crank sensor?
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Old 07-23-2007, 09:30 AM   #9
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Have you done a tune up with plugs/wires etc.
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Old 07-24-2007, 03:38 AM   #10
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what i tring to do is get as many ideas as i can seen i work lots and havent ad much time to tinker with it was hopeing to have a few so when i get time this weekend to look at it i could just dig in it didnt want to have to run to the pc every to mins cuse that way i wasnt bothering all of you every 5 mins during the week end
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