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90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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d4nnyb0y02
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Oct 21, 2010, 11:35 AM
Post #1 of 32
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90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Now, one thing to note... is if I have the car in park, and just push on the throttle, the engine revs smooth with no problem. It also idles fine. It's only when I actually am driving the vehicle that it does this. And, the pop is definitely coming from the engine compartment. I checked, and the oil is clean, no contaminates. No check engine lights. I changed the fuel filter less than 5,000 miles ago.
This car is fuel injected.
When I am accelerating, I'll get a *pop* coming from the engine compartment. I checked, and there was a vacuum hose going to my Canister Purge Solenoid that was not connected (male to female). I have no idea how long it was like that. I plugged it back in pretty simply, but doing so made no improvement to my issue. Could this hose going to this being unplugged for so long have caused something to get clogged? I drove the car around... put it on the interstate... no improvement... and when I checked, the hose was still hooked up, so I have no idea how it ever got off there. Never heard of this thing, but I read up on on it a bit and it seems this wouldn't have much to do with it... as it just takes vapors and burns them up instead of sending them directly into the atmosphere. I'm guessing I probably bumped it off when I changed the radiator a year and a half ago and never noticed. Below is a link to some good pictures of it on autozone.
Anyways, the gas tank was just under half, so I filled it up and drove it around... still doing it. I've lost a lot of power, it seems to really be hesitating, kind of surging at times... and I get a pop when accelerating sometimes.
What do you think?
Thanks!
Links deleted...........not allowed
(This post was edited by Hammer Time on Oct 21, 2010, 11:52 AM)
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Sidom
Veteran
/ Moderator
Oct 21, 2010, 3:20 PM
Post #2 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Well I would start off with seeing if there was any codes...
The popping sounds like it's backfiring thru the intake. I would make sure there isn't any misfires, if so find out the cyl and see what's going on...
All that checks out maybe disconnect the MAP sensor and see if that has any type of effect.....
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Sidom
Veteran
/ Moderator
Oct 21, 2010, 3:38 PM
Post #4 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Those old school ones I get switched around.... That old I figured was still running a MAP but could be mistaken.......wouldn't be the 1st time or the last.......
Either one......unplug it & drive it.....
(This post was edited by Sidom on Oct 21, 2010, 3:38 PM)
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chickenhouse
Enthusiast
Oct 21, 2010, 6:06 PM
Post #5 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Losing power, anyone think a convertor check might be in order?
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speed
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Oct 21, 2010, 10:03 PM
Post #6 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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im in the boat with CH that was what came to my mind for it too.
GM ASEP 26 SCC Milford ASE certified in Brakes and Electrical on Thursday April 5th 2012
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d4nnyb0y02
User
Oct 22, 2010, 5:17 AM
Post #8 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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I can't see my text in the other post.
What are you referring to when you say converter check? Catalytic converter? Transmissions torque converter?
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chickenhouse
Enthusiast
Oct 22, 2010, 7:30 AM
Post #9 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Reffering to the cat not the torque. If it's going south and starts to stop up when hot you will lose power and with a restristed exhaust, the engine may backfire through the intake. It (the fuel/air mix) has no place to go, no room in the engine and the used cannot get out. Just a thought.
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d4nnyb0y02
User
Oct 22, 2010, 8:00 AM
Post #10 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Just curious... would a cat converter going bad cause it to start extra hard in the cold?
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chickenhouse
Enthusiast
Oct 22, 2010, 8:09 AM
Post #11 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Not nessarily but you made no mention of hard cold starting issues. Have you done basic tune up work?
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d4nnyb0y02
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Oct 22, 2010, 8:15 AM
Post #12 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Well, it's always started hard in the cold, something I was never able to figure out. It's been like that for the last 15,000 I've had it. The lunging/hesitating issue I brought up in this topic is new. Just thought I'd bring it up.
As far as the hard cold start goes (like, in cold weather cold start...) I was going to try a coolant temp sensor.
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chickenhouse
Enthusiast
Oct 22, 2010, 8:21 AM
Post #13 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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If you are going to throw money at it, why not get a diagnosis? Techs need $ more than the retailers!
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d4nnyb0y02
User
Oct 22, 2010, 8:33 AM
Post #14 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Because I need money more than techs... 
Case in point... I'm driving an old beat up 1990 Bonneville... lol.
(This post was edited by d4nnyb0y02 on Oct 22, 2010, 8:46 AM)
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chickenhouse
Enthusiast
Oct 22, 2010, 10:09 AM
Post #15 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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My newest that is on the road is a 92 truck- second newest on the road is an 84 Caballero and that is all I have on the road.
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d4nnyb0y02
User
Oct 22, 2010, 10:29 AM
Post #16 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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I take it you know more about what you're doing when it comes to cars than I do (that's why I'm here), and I inherited this car from people who haven't performed maint. on it, so it's pretty much falling apart... just trying to keep it alive for a bit longer before I can get a better one. Probably going to be like an older Olds 88 that I can swap parts on w/ this one.
Anyways, I am actually taking it to a mechanic to have him do a fuel pressure test on it. I always take it to him when I'm in over my head or don't have the tools to fix.
(This post was edited by d4nnyb0y02 on Oct 22, 2010, 10:35 AM)
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chickenhouse
Enthusiast
Oct 22, 2010, 10:38 AM
Post #17 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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I understand that but you need to go by the procedures that have been generally accepted for repair. Get the tune up, wires also, clean out throttle body, check fuel pump pressure. If any of these are below what is required for this engine, there's the problem! That's where you start, not "I think I'll try a coolant sensor", rotate the hubcaps and change the air in the spare tire too! It's cheaper and will do about the same result.
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d4nnyb0y02
User
Oct 22, 2010, 10:51 AM
Post #18 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Unless of course what I do fixes it for the cost of the part... which is again, why I'm here. And, I'm guess also why you're here answering questions? Or do you generally just tell people to take it to a mechanic because trying to replace the part to makes the most sense is pointless? I can deal with not being 100% sure, I'm just looking for suggestions for my car problems. Trust me, I know that there are car mechanics in existence waiting for me to pay them to fix it. If I decide this is necessary, I will.
(This post was edited by d4nnyb0y02 on Oct 22, 2010, 11:01 AM)
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chickenhouse
Enthusiast
Oct 22, 2010, 11:01 AM
Post #19 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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You are totally missing the point. I am totally done wasting my time. Go buy all the stuff you want for it! When none of it changes anything except make your wallet lighter, find something else to buy for it. Good luck and good by!
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 22, 2010, 11:01 AM
Post #20 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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What he is trying to get through to you is that the method of just throwing parts at a problem can cost you 10 times what it would have to get it diagnosed correctly but you can do what you want. It's your money to waste.
(This post was edited by Hammer Time on Oct 22, 2010, 12:30 PM)
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d4nnyb0y02
User
Oct 22, 2010, 11:06 AM
Post #21 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Oh, I get the point, I just didn't know I was going to get a lesson economics. I'm not talking about dropping an engine in... I'm talking about a $10 sensor.
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 22, 2010, 11:07 AM
Post #22 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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$10 sensor?????
Now you are dreaming
(This post was edited by Hammer Time on Oct 22, 2010, 12:30 PM)
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d4nnyb0y02
User
Oct 22, 2010, 11:08 AM
Post #23 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Coolant temp sensor (read above).
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re-tired
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Oct 22, 2010, 11:45 AM
Post #24 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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No one up front said , Have a mechanic fix it . A lot of advise was given in the beginnning. But you were jumping from one thing to another. Only after their FREE advise was givin was it "sugggested" that you have it diagnosed. A scan check and basic checkout is sometimes done for little or no fee.exp at the chain type shops . THe fee ,if any, would have been less than throwing a couple of sensors at it and less tme wasted .I am sorry we could not give you the answer you wanted . But remember the advise was given for free by a unpaid tech on his own time .
LIFE'S SHORT GO FISH
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d4nnyb0y02
User
Oct 22, 2010, 12:21 PM
Post #25 of 32
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Re: 90' Bonneville 3.8L V6; sluggish lunges, popping in engine
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Was the "suggestion" that I fill up the spare and rotate the hubcaps also FREE advice?--advice I definitely was not asking for.
As soon as I mentioned the very thought of trying to fix a totally diff. issue (car not starting well in the cold) by putting on a coolant temp sensor (something that was actually suggested to me by a tech, I just didn't say so), the conversation turned into a crusade of giving mechanics money instead of retailers, and telling me to do things to my car in that are unnecessary (rotate hubcaps, fill up spare), in order to fix clearly unrelated issues. This is called talking down to someone else. And, again, this is not the advice I was looking for. Also, thank you for assuming a techs times is worth something (that FREE advice should be gracefully bestowed upon me), but my time is apparently worth nothing?
I'm glad someone is sorry. They should be. Thanks.
(This post was edited by d4nnyb0y02 on Oct 22, 2010, 12:29 PM)
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