3800 Car is sooooooo slow

[LPSPEED2]

My car has shown a dramatic decrease in power through the past 4-5 months, it can now barely beat a stock tiburon gt, which is pretty damn slow. I dont feel a kick in the power like i used to and the car doesnt throw me back in the seat anymore. It just feels like a dog, I have no SES light and nothing is coming up on the scanner, can it just be the engine getting tired or starting to go??? I would like to know if anyone else has experienced this or might know whats up.

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[Mike K]

Originally posted by LPSPEED2@Mar 15 2005, 09:38 AM
My car has shown a dramatic decrease in power through the past 4-5 months, it can now barely beat a stock tiburon gt, which is pretty damn slow.  I dont feel a kick in the power like i used to and the car doesnt throw me back in the seat anymore.  It just feels like a dog, I have no SES light and nothing is coming up on the scanner, can it just be the engine getting tired or starting to go???  I would like to know if anyone else has experienced this or might know whats up.

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Call me back and let me know if you guys are tearing my tranny down today. If yes, I'll take a look at it while I'm out there.

 

[Royalgtp]

compression test should tell a little info.......

 

[sr71_rgl]

When was the last time you changed plugs? Mine are in need of changine so it stutters under high boost and has no balls whatsoever. It's happened in the past and as soon as new plugs are in it's like a brand new motor

 

[Royalgtp]

plugs and compression test to be safe........good call.

 

[LPSPEED2]

I changed to autolite 104's at the mid-end of summer, at Leo's(2kredghost) house. I'l check those, i was planning on changing them before i drive down to florida next week.

 

[mybluegtp]

try the autolite 605's

 

[imported_Ron Vogel]

Do you see black residue on your hood above the pulley for the SC or around it? I'm asking, because it may simply be the belt slipping. They are only good for about a season, and once it starts to slip, it gets worse the longer it goes because it polishes the pulley as it slips.

 

[sr71_rgl]

Originally posted by LPSPEED2@Mar 15 2005, 01:08 PM
I changed to autolite 104's at the mid-end of summer, at Leo's(2kredghost) house.  I'l check those, i was planning on changing them before i drive down to florida next week.

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FYI...the plugs might not look bad (sooty/dirty) but the gap might have spread. In my situation the plugs are super clean but the gap expands to the point where I'm blowing out the spark at anything over 11psi. At less than $1/plug (103 coppers) I just gap new ones and replace the old and it's AG for another 3 months until the gap spreads again.

 

[LPSPEED2]

well motors gone, went to get parts and on my way back to the shop, just heard a snap and clunking and barely stays on, sounds like only 1 or 2 pistons are left. I gotta tear the puppy down and see how bad shees blown.

 

[MrT]

Originally posted by LPSPEED2@Mar 15 2005, 07:05 PM
well motors gone, went to get parts and on my way back to the shop, just heard a snap and clunking and barely stays on, sounds like only 1 or 2 pistons are left.  I gotta tear the puppy down and see how bad shees blown.

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[LPSPEED2]

im actually surprised it lasted this long.

 

[LPSPEED2]

i was thinking this morning that if i blew the motor it wouldnt run......right??? Because the car is runing but it just it all over the rpm range and cant stay on without a bit of gas. Im hoping its just like 4 simultaniously cracked plugs, or something simple to fix.

 

[framos242]

Is it me or does this not sound good???

 

[imported_Ron Vogel]

I'd venture to say, you lost some pistons, and it will still run. What kind of mods do you have?

 

[LPSPEED2]

just FWI, 3.4, Flowmaster cat-back. thats it. When it happened it sounded real bad and clanky, then the next time i fired it up it soundeda bit better, and the last time i started it it just sounded like normal with an unstable idle and only sounded like a couple cylenders were working.

 

[imported_Ron Vogel]

Well, pull some plugs first and check it out. Was traction control on when this happened?

 

[LPSPEED2]

yes traction control was ON, as in the tcs was not lit. And i wont have a chance to look at the car til tomorrow cause im in school right now and the car is at my shop

 

[imported_Ron Vogel]

Reason I asked...the trac control system will pull injectors to lower power output. It also hleps pop pistons! It's the only explanation I can think of why a 3.4 pulley would pop a piston. The first thing I did when I got my PT was to disable any injector disable in the PCM.

 

[sr71_rgl]

Originally posted by Ron Vogel@Mar 16 2005, 12:44 PM
Reason I asked...the trac control system will pull injectors to lower power output. It also hleps pop pistons! It's the only explanation I can think of why a 3.4 pulley would pop a piston. The first thing I did when I got my PT was to disable any injector disable in the PCM.

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Correct me if I'm wrong but wont the injectors cutting out only apply if he had lost all traction and was spinning the tires at a VERY high speed (ie flooring it on ice)? He made it sound like he was just driving normal when it happened.

 

[2000gtp]

sorry to here that leo.....need any help call me.

 

[imported_Ron Vogel]

Originally posted by sr71_rgl+Mar 16 2005, 01:32 PM-->

<!--QuoteBegin-Ron Vogel

@Mar 16 2005, 12:44 PM
Reason I asked...the trac control system will pull injectors to lower power output. It also hleps pop pistons! It's the only explanation I can think of why a 3.4 pulley would pop a piston. The first thing I did when I got my PT was to disable any injector disable in the PCM.

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Correct me if I'm wrong but wont the injectors cutting out only apply if he had lost all traction and was spinning the tires at a VERY high speed (ie flooring it on ice)? He made it sound like he was just driving normal when it happened.

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[/b]

Yeah, I didn't go back to original post. Seems kinda screwy to have a major prob w/only a 3.4 on there. Usually most cars can simply slap on a 3.4 and be OK. Clanging around noises happen from only two things really; either a piston is fragged so far that the rod is bouncing around in the bore, or the flexplate is cracked. Pretty impossible to diagnose that before it happens.

 

[LPSPEED2]

ok, i forgot to mention as well, before the "blow up" My right side cigarette lighter housing was not working anymore, just out of no where. Fuse??? I dont know if this might have any relation but after the motor went south, i tried hooking up my snapon scanner to the obdII under the dash, and it got no signal at all, it was completely plugged in, but gave no signal. Could that be a fuse or something or what can cause the obdII control to go out?

 

[ThaLord]

cigarette lighter works off of the same fuse, that gives power to the ODBII port.

 

[LPSPEED2]

cool thanks for that info, i got the scanner on it and it says cylender four is missfiring 147 times per minute, and #2 about 0-4 times per minute, but thats the only one seeing any problems, later today i will pull plug # 4 (the bitch) and hopefully just see a cracked plug, but if not then i will have to operate......

Wish me luck!!!!!!!!