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Engine trouble

19 messages,  Last post on May 27, 2009 at 4:15 PM

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#1 of 19 Engine trouble by rdunluck Aug 15, 2008 (9:19 pm)
i have the 2.3 Quad 4 SOHC and its a 92 grand am SE i decreased my engine about 2 months ago and it just started to seem like its losing power and misfiring so i changed the plugs and boots still didn't work so i changed my coil packs and housing and it ran real great for a week and then when i was driving to work it just seemed to be lacking power again and at the light it just died when i stopped and i started it again it ran for a sec and i hit the throttle and it died and started again and it barely made it off the highway and now it takes a good 5 sec for it to start up and is still seems like its misfiring but the plugs look normal and im wondering if it might be my fuel pump, filter , injectors or a short from when i decreased it any suggestions would help thanks Replies to this message: helle252 (Aug 17, 2008 9:28 am) rdunluck (Aug 25, 2008 9:48 am)
#2 of 19 Re: Engine trouble [rdunluck] by helle252 Aug 17, 2008 (9:28 am)
Replying to: rdunluck (Aug 15, 2008 9:19 pm) hi, first thing you need to know about a quad four is they are every technicians worst nightmare lol. I ran across this problem a number of times while i was a dealer tech. it could be a whole number of things. you need to check your fuel pump and filter as you thought but you also need to check the fuel pressure regulator they are known to cause problems and when they go bad they dump fuel into your intake manifold. you said you replaced your coils and housing but did you replace your ignition module? you should definetly check it. if it seems to run worse as it gets warmer you might have a bad module. hope this helps good luck. Replies to this message: rdunluck (Aug 25, 2008 9:48 am)
#3 of 19 maz da da da dohc 91-97 by 91323vic Aug 17, 2008 (4:54 pm)
i started a project astina 91 and retro ed the engine from single to dohc transplant most of everything was interchangeable she runs but i cant get full rev thru t p s i ve check off fuel regulating module by hot wiring current wires to bypass which gave me full rev and open the fuel in thru the thottle body im either half a turn out because of model complexity on the dissy shaft the drive nodes are a little different should i change my dissyshaft nodes and will thatfix my lack of acceleration thanks 91323vic
#4 of 19 maz da da da dohc 91-97 by 91323vic Aug 17, 2008 (5:10 pm)
i started a project astina 91 and retro ed the engine from single to dohc transplant most of everything was interchangeable she runs ( 1 ) but i cant get full rev thru temp pressure switch keeps governing at 4 grand rev i ve check off fuel regulating module by hot wiring current wires to bypass it which gave me full rev and i open the air in thru the throttle body (2) im either half a turn out on dissy because of model complexity on the dissy shaft the drive nodes are a little different should i change my dissy shaft nodes and will that fix my lack of acceleration thanks 91323vic
#5 of 19 ENGINE WANT START by topcop2 Aug 19, 2008 (4:09 pm)
I HAVE A 2001 PONTIAC GRAND AM THAT RAN HOT BECAUSE IT GOT LOW ON COOLANT.LET ENGINE COOL AND REFILLED WITH WATER.ENGINE WANT START.IS IT POSSIBLE I BLEW A HEADGASKET?HOW CAN I TELL IF SO.HOW CAN I TELL IF THE ENGINE IS RUINED?PLS GIVE ME SOME IDEAS>THKS. Replies to this message: mtm0284 (Aug 25, 2008 6:39 am) rdunluck (Aug 25, 2008 9:41 am)
#6 of 19 Grand Am excessive rev 1996 by mtm0284 Aug 25, 2008 (6:32 am)
1996 quad 4 auto trans No warning until one day on start up - excessive rev then it will settle down until shift into gear then excessive rev and instant load until it stalls under brake/load. Car will drive but stays in gear even under braking/stopping. Does anyone have any ideas where to start looking. I changed the Trans filter/oil because I knew that had not been done. No luck Acts like the Tourque Converter is stuck. Is that possible? Help please my daughter needs her car so she will leave mine alone Thanks
#7 of 19 Re: ENGINE WANT START [topcop2] by mtm0284 Aug 25, 2008 (6:39 am)
Replying to: topcop2 (Aug 19, 2008 4:09 pm) One way to know is if you have water in your oil (check the oil dip stick) or oil in the water ( drain coolent). More info is needed such as does it crank? Does it smell? What does it sound like when cranking? ( metal in metal or rattle)
#8 of 19 Re: ENGINE WANT START [topcop2] by rdunluck Aug 25, 2008 (9:41 am)
Replying to: topcop2 (Aug 19, 2008 4:09 pm) hey i had that same prob for a while if you can get ahold of a pressure gauge that can go up to 220 do a compression test and that should tell you if you blew a head gasket or valves im taking my engine apart and replacing mine it blew between cyl 1 and 2 and when you pull your head or heads if you have the v6 and put a strait edge on it to make sure you didnt warp or damage it and check the block to and you should try to get a repair book like Hanes or Chiltons if you have some spare money they're pretty helpful
#9 of 19 Re: Engine trouble [helle252] by rdunluck Aug 25, 2008 (9:48 am)
Replying to: helle252 (Aug 17, 2008 9:28 am) i did a compression test and cyl 1 and 2 was 60, 3 and 4 were 190 so im changing my headgasket cause thats what i gathered from my compression test did, and do you know how to test the ignition module cause there pretty expensive and i plan on changing my fuel pump and screen in a while i have some pictures i took cause im taking everything apart the inside of my intake is just black and my valves are pretty black to but thanks for your imput maybe if my check is good enough ill look at a new fuel pressure regulator
#10 of 19 engine spudders and cuts out by tosmond Sep 27, 2008 (1:47 pm)
1999 grand am se when i try to start it, it spudders and cuts out. The pump works plups are new. What maybe the problem? Thanks

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