Engine ticking. Lack of power suddenly
Printed From: West Coast Fieros
Category: Technical Topics Forum
Forum Name: Technical Questions and Discussions
Forum Description: Got a technical question about your fiero? ask it here.
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=3173
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Topic: Engine ticking. Lack of power suddenly
Posted By: redni
Subject: Engine ticking. Lack of power suddenly
Date Posted: 02 April 2013 at 1:23am
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So I started my car up after 2 days.. Cold start. All systems go. Sounded
fine. Power was there. Warmed it up for about 2 to 3 Mins.. Then Idecided to give it a ltitle kick around the block and I get sudden loss of power and engine sounds high power lawnmowerish... Idles a little ruff. Not throaty..power jus not there all of a a sudden.. I reset the battery incase.. I doubt iit's a misfire because I've heard a misfire before on this car . But who knows. But ya. Happened so fast.. I'm stressing out please help.. 1986 2.8L v6 5spd |
Replies:
Posted By: redni
Date Posted: 02 April 2013 at 1:24am
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Almost sluggish. And old sounding Just weak tick.. Barely any bak
pressure it seems Iike. |
Posted By: Patrick
Date Posted: 02 April 2013 at 12:38pm
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Clogged cat?
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Posted By: redni
Date Posted: 02 April 2013 at 2:32pm
| I just put. A new one in |
Posted By: Patrick
Date Posted: 02 April 2013 at 3:06pm
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Muffler. Plugged?
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Posted By: redni
Date Posted: 02 April 2013 at 3:09pm
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Wouldn't make the engine tick. I checked compression. It's150 all
aaround |
Posted By: redni
Date Posted: 02 April 2013 at 4:17pm
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I changed my plugs. I also forgot to mention. It's easier to stall and when
I give it gas it takes forever to speed up. The rpms take so long. It's real leggy. Sumthing is really off. I just don't know what :(.. Please help guys |
Posted By: Patrick
Date Posted: 02 April 2013 at 4:47pm
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Plug wires. Which wires are going where? Double-check.
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Posted By: redni
Date Posted: 02 April 2013 at 4:50pm
| Checked all |
Posted By: Capt Fiero
Date Posted: 02 April 2013 at 5:16pm
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Almost sounds like the timing chain skipped a tooth, seeing it more and more. Try advancing the timing and see if that helps. If that helps, then the chain is most likely going bad you will be lucky to get 5 miles before it jumps again you loose all power.
However a there are a few smaller things to check as well. Make sure you did not blow a fuse for one bank of injectors. If that happens you lose 1/2 your injectors, the car will run rough, but will run. Have you checked to see if the cap/rotor are in good shape. I would go over all the little things and once you have eliminated all the little things then you will have to look at that timing chain again. Its a pain in the butt job, but with time the average home mechanic can do it. ------------- Capt Fiero 88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
Posted By: redni
Date Posted: 02 April 2013 at 5:59pm
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Cap rotor plugs wires all good. New cat. Still same thing. Really rough
idle.. I find that it's easy to stall when I'm driving |
Posted By: Capt Fiero
Date Posted: 02 April 2013 at 6:20pm
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Well pull the cap off, and put a breaker bar on the crank bolt, its 19mm IIRC, gently turn the crank with the breaker bar until you see the rotor start to move, then turn the crank the opposite direction. they should move in almost perfect unison, more than a few degrees of slop means the timing chain is suspect. ------------- Capt Fiero 88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
Posted By: redni
Date Posted: 02 April 2013 at 7:01pm
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Thankyou so much ccaptain. Turned out.. It was my fuse for the fuel injection.. But it keeps blowing.. Now I was looking into this... http://www.fiero.nl/forum/Forum2/HTML/124585.html That's is what I'm. Having now.. I am. Shorting out somewhere but how could or where could be... Also. I mentioned I have a leak between the. Inner exhaust manifold and downpipe. Rusted out.. The gasket is gone from there... Could this be a related issue |
Posted By: Capt Fiero
Date Posted: 02 April 2013 at 8:01pm
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Well I am glad it was just a fuse for one of the banks. 1st things first unplug the injector harness its a large flat connector near the dogbone mount. Then re-insert the fuse and see if it blows. Obviously you can't start it, but you can try and crank it over. If the fuse does not blow then you need to look at the injector side of the harness. If it does blow then you need to look at the engine side of the harness. There are several places where the injector harness comes in contact with engine mounts and such make sure that it has not rubbed through the insulation. I had a similar issue where I was blowing a bank fuse on my V8 and turned out it was just bit of the harness had been rubbing, cost me about 20 cents worth of tape to fix it and never had the issue again. As to the exhaust leak, I doubt it would have anything to do with it, unless it was blowing exhaust gas right onto the harness and the harness is not in that area.
Again glad it was a simple fix. Now just find the short and away you go. ------------- Capt Fiero 88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
Posted By: redni
Date Posted: 02 April 2013 at 8:08pm
| Awesome. I will check it out. Thanks again!!! |
Posted By: redni
Date Posted: 03 April 2013 at 5:34pm
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I can't seem to find these locations. Is it possible u can show me a
picture |
Posted By: karnak
Date Posted: 05 April 2013 at 4:51pm
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Circled  
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Posted By: redni
Date Posted: 05 April 2013 at 4:53pm
| Thanks a lot!. I'll check it out |
Posted By: redni
Date Posted: 05 April 2013 at 4:55pm
| Is that the 2.8 v6 |
Posted By: Dr.Fiero
Date Posted: 05 April 2013 at 6:28pm
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Yes - it's a 2.8. That's also MY hand! I've been recycled! Well, my photo has been anyhow. :) |
Posted By: beken
Date Posted: 05 April 2013 at 6:47pm
that motor is so shiny.  -------------  Beken (aka Ken) - bekentech@westcoastfieros.com Original and still the owner of an 85SE 2M6 4spd |
Posted By: redni
Date Posted: 18 July 2013 at 9:58am
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So I've taken off the intake manifold... Can't seem to find any short!
Could it b a relay? It's to the point now where I start the car and the fuse blows right off the bat. At first when I found out it was the fuel injection fuse... It would only be until I revved it then it blow. Now it's right when I start it. |
Posted By: Dr.Fiero
Date Posted: 18 July 2013 at 12:05pm
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There are no relays. If you can turn on the key, with the flat connector unplugged and nothing happens, then the problem simply lays on the other side of the plug. Start by pulling off all the injector wires. Meter across each injector. IIRC you should see about 14ohms across each. You could very well have a shorted one. Report back, then we'll proceed. |
Posted By: redni
Date Posted: 25 July 2013 at 3:31pm
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So I I tried what u told me to do. I don't know if I'm doing it properly. I live
in Vancouver. If anyone wants to help. I'd be willing to pay if they can fix this problem!! Frustrating and it's so damn hot out. But I have a parking garage to work on. It would b greatly appreciated. Heck I'll even throw in my gt spoiler. And cash. |
Posted By: redni
Date Posted: 25 July 2013 at 3:34pm
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And fuse blew wen the injected we're connected. To the clip. I really.
Think it'd that. Hope it'd that but none. Of that 14 ohm. Stuff came. Up. It starts runs. But fuse blows. If I put a 20 amp fuse in. It does not blow. But the car still runs funky. Could be something else.? :( |
Posted By: Dawg
Date Posted: 25 July 2013 at 6:50pm
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you will fry wires doing that. Do not operate with bigger fuse.
You must have a bad injector. Or a damaged harness. Either way, the upper intake manifold has to come off. Dawg |
Posted By: Romeo
Date Posted: 25 July 2013 at 8:43pm
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Oh god, never over-amp a circuit like that. Those 20 cent
fuses are there to be sacrificed, so that you don't lose the hundreds of bucks worth of components behind it. Take it in if you're having troubles. ------------- Never shift into reverse without a back-up plan. |
Posted By: redni
Date Posted: 25 July 2013 at 9:04pm
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Tried it out. I had intake manifold. Off. Don't know what else to do.
GuessiI'll take it in. Thought maybe a member would wanna make sum extra cash cuz shop will charge a lot. Anybody know any fiero mechanics? |
Posted By: Dr.Fiero
Date Posted: 26 July 2013 at 7:16am
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Normally I'd head over to help you out - but I'm leaving town for 6-8 months
in a couple days and don't want to leave you 1/2 done. Might want to go to a shop that does electrical as a specialty (vs a "brake and muffler" shop, etc). Can't really give you any names though, sorry. (update: I'm back, and here to stay.) |
Posted By: Capt Fiero
Date Posted: 26 July 2013 at 8:19am
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Send a PM to Fire451 he is an amazing Fiero Mechanic and I think he has time to take on an extra project right now. I don't know his rates right now, but they should be pretty fair. ------------- Capt Fiero 88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
Posted By: redni
Date Posted: 03 September 2013 at 7:40pm
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I sent out the pm but got no response. Anyone else willing to take on the
job? I will pay! |
Posted By: Dr.Fiero
Date Posted: 03 September 2013 at 7:57pm
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Sigh... I'm going to regret this, but....
I'm back in town on the 7th (in a few days). Time is VERY tight for me while I'm back, but if you can have everything taken apart ahead of time, and have it in a clean, lit etc area - I'll come by for a few hours. PM me all your contact info. First chance I'll have to come over is probably monday afternoon'ish. That'll be weather dependant, assuming you're not in a fully enclosed shop. |
Posted By: Dr.Fiero
Date Posted: 11 September 2013 at 1:23pm
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Aaaaaand for anyone following along... After a 5 minute visit in person...
Problem solved. One 3/4 shorted injector (~3 ohms vs 12-14, so it would have been trying to pull way too much current). |
Posted By: CFoss
Date Posted: 11 September 2013 at 1:46pm
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Nice work. And a very generous donation of time. Chay ------------- 86 SE 3.4 |
Posted By: redni
Date Posted: 11 September 2013 at 1:55pm
| Finally! Haha. Thanks Dr. Fiero. |
Posted By: Dr.Fiero
Date Posted: 11 September 2013 at 4:35pm
Not so much on the donate... but close.. 
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CFoss wrote:Posted By: Patrick
Date Posted: 11 September 2013 at 9:27pm
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So what was the "ticking"?
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