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Author
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Topic: 95 GT bog/Hesitation under heavy load
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Mercury God of Speed
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Member # 11645
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posted
 
 
Picked up a 95 GT recently that had sat dormant for eight years, I changed fluids,filters and added injector cleaner and half a bottle of mystery oil in the tank with a half tank of 91 and half in the crankcase (injector lube/upper cylinder help at first start up) swapped all filters and oil again after running it. The car is mostly stock except for CAI and conversion from auto to TKO 500 with a complete swap kit (don't know who's but it did include a harness and computer.) it runs fine and idles fine but hesitates with a sudden rev at idle and bogs under hard throttle no sputters, back fires or miss, timing was at 14 deg so set it back at 10deg. I did find the the TPS is out of spec and has a dead spot so I will change it. It has good voltage 13.7-14.2v at the battery and the alternator. It has good steady vacuum at 18 to 19" egr is ok. Fuel pressure is a constant 37 psi (stock reg) the pump is noisy and is original (new one incoming) the only thing I haven't changed yet is plugs and wires and will install my MSD 6A (it already has a blaster coil and billet MSD Dist.) it passed smog easily with no issues. I spoke with "Tim-Mustangguy" and he agreed that I was heading in the right direction but I wondered if anyone else had similar issues. I did find one post about hesitation where they found a blown egr gasket (cheap and easy) so I'll check that too. Am I missing any info, feel free to ask!
[ 2013-12-10, 02:48 PM: Message edited by: samsbolt390 ]
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Ford Blue Blood. 68 XR7 390 X code Cougar, 95 GTS(sold) 95 GT(Donor) 06' GT Black on Black(sold)
Posts: 203 | From: 209 | Registered: Feb 2012
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SLOW95GTS
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Member # 10365
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posted
clean the mass air yet?
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1995 Mustang GTS 5.0 - "minor mods"
Posts: 1199 | From: East Bay | Registered: Oct 2010
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Mercury God of Speed
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Member # 11645
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posted
No but it is one of the steps I left out, good lookin out !
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Ford Blue Blood. 68 XR7 390 X code Cougar, 95 GTS(sold) 95 GT(Donor) 06' GT Black on Black(sold)
Posts: 203 | From: 209 | Registered: Feb 2012
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SLOW95GTS
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Member # 10365
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posted
Also check out the filter becuse it could of clogged up since its been sitting and no problem.
Posts: 1199 | From: East Bay | Registered: Oct 2010
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SLOW95GTS
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Member # 10365
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posted
Also check out the filter becuse it could of clogged up since its been sitting and no problem.
Posts: 1199 | From: East Bay | Registered: Oct 2010
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Mercury God of Speed
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Member # 11645
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posted
On its second filter now, waiting on the new pump, hopefully the sock didn't disintegrate.
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Ford Blue Blood. 68 XR7 390 X code Cougar, 95 GTS(sold) 95 GT(Donor) 06' GT Black on Black(sold)
Posts: 203 | From: 209 | Registered: Feb 2012
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Mercury God of Speed
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Member # 11645
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posted
Bad Gas or lack enough good gas. This is the second time I've dealt with crap fuel and these symptoms. Tank full of 76, 91 octane and it perked right up and runs strong. Still going to do all the other tune up stuff for piece of mind. Thanks for the suggestions.
[ 2013-12-13, 05:26 PM: Message edited by: samsbolt390 ]
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Ford Blue Blood. 68 XR7 390 X code Cougar, 95 GTS(sold) 95 GT(Donor) 06' GT Black on Black(sold)
Posts: 203 | From: 209 | Registered: Feb 2012
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Mercury God of Speed
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Member # 11645
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posted
And after cleaning the O2 which was carboned up it runs like a Raped ape !!! Thanks Slow95GTS !
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Ford Blue Blood. 68 XR7 390 X code Cougar, 95 GTS(sold) 95 GT(Donor) 06' GT Black on Black(sold)
Posts: 203 | From: 209 | Registered: Feb 2012
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SLOW95GTS
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Member # 10365
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posted
Yeah that's the first thing I did on my car was brand new bosch o2's from rock auto. Glad you got it running good now.
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1995 Mustang GTS 5.0 - "minor mods"
Posts: 1199 | From: East Bay | Registered: Oct 2010
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Mercury God of Speed
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Member # 11645
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posted
LoL I meant MAF sensor, but I do plan on installing new O2's
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Ford Blue Blood. 68 XR7 390 X code Cougar, 95 GTS(sold) 95 GT(Donor) 06' GT Black on Black(sold)
Posts: 203 | From: 209 | Registered: Feb 2012
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SLOW95GTS
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Member # 10365
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posted
yeah one of the most common things with fuel injected cars is the vacuum and mass air meters.
Glad I was of help ![[patriot]](graemlins/patriot.gif)
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1995 Mustang GTS 5.0 - "minor mods"
Posts: 1199 | From: East Bay | Registered: Oct 2010
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Mercury God of Speed
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Member # 11645
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posted
Glad you were too.
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Ford Blue Blood. 68 XR7 390 X code Cougar, 95 GTS(sold) 95 GT(Donor) 06' GT Black on Black(sold)
Posts: 203 | From: 209 | Registered: Feb 2012
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