ok.I NEED SERIOUS HELP!!!
08-28-2006, 12:52 AM
#1
Thread Starter
Join Date: Aug 2006
Posts: 4
ok.I NEED SERIOUS HELP!!!
ok.about 2 monthes ago my 1988 mustang gt started to have some problems.it started to hesitate and i decided to do a tune up. i replaced the plugs,plugwires,cap,rotor,fuel filter and airfilter. after all this about a month went by and the sh*t hit the fan. all of a sudden now when i try to even tap the gas pedal while in gear.it keeps backfiring through the tailpipe and up near the back of the engine. i checked the fuel pump relay and the fuel pressure regulator and there not the problem. i did see that therew was only 20 psi of fuel pressure. is the problem indefinitly the pump.or could it be timing or something else?its gotten so bad that i cant even get past 1500 rpm.and going up hill FORGET ABOUT IT!!!
08-28-2006, 01:01 AM
#2
6th Gear Member
Join Date: Jan 2006
Location: Laredo, TEXAS
Posts: 6,054
RE: ok.I NEED SERIOUS HELP!!!
ORIGINAL: 1988fordproblem
ok.about 2 monthes ago my 1988 mustang gt started to have some problems.it started to hesitate and i decided to do a tune up. i replaced the plugs,plugwires,cap,rotor,fuel filter and airfilter. after all this about a month went by and the sh*t hit the fan. all of a sudden now when i try to even tap the gas pedal while in gear.it keeps backfiring through the tailpipe and up near the back of the engine. i checked the fuel pump relay and the fuel pressure regulator and there not the problem. i did see that therew was only 20 psi of fuel pressure. is the problem indefinitly the pump.or could it be timing or something else?its gotten so bad that i cant even get past 1500 rpm.and going up hill FORGET ABOUT IT!!!
ok.about 2 monthes ago my 1988 mustang gt started to have some problems.it started to hesitate and i decided to do a tune up. i replaced the plugs,plugwires,cap,rotor,fuel filter and airfilter. after all this about a month went by and the sh*t hit the fan. all of a sudden now when i try to even tap the gas pedal while in gear.it keeps backfiring through the tailpipe and up near the back of the engine. i checked the fuel pump relay and the fuel pressure regulator and there not the problem. i did see that therew was only 20 psi of fuel pressure. is the problem indefinitly the pump.or could it be timing or something else?its gotten so bad that i cant even get past 1500 rpm.and going up hill FORGET ABOUT IT!!!
08-28-2006, 01:23 AM
#4
Thread Starter
Join Date: Aug 2006
Posts: 4
RE: ok.I NEED SERIOUS HELP!!!
i definitly agree that could be a problem.the only thing is that its been getting progressivly worse.if it where a pinched line.it wuld have been the same the whole time.also when ever i start up the car at first i get a really strong smell of gas.and just today the exhaust smelt really rish.yet im only get 20 psi.im so freakin confused.
08-28-2006, 01:49 AM
#5
Banned
Join Date: Apr 2006
Location: Goodyear, AZ
Posts: 1,631
RE: ok.I NEED SERIOUS HELP!!!
You may want to double check the pressure regulator. Some times the diaphragm will rip and leak fuel.....sucked into the manifold via vaccuum line from the regulator. I would also check and clean the MAF sensor, if 88' CA. car. And also could be the MAP sensor ( located on the firewall, black, has a vacuum line attached and 2 or 3 wire conn. to the bottom). Speed density cars will run like crap if it goes out. Reads engine vaccuum and works in conjuction with the TPS to know what the engine is doing......load, etc. Hope this may help.
08-28-2006, 02:01 AM
#6
Thread Starter
Join Date: Aug 2006
Posts: 4
RE: ok.I NEED SERIOUS HELP!!!
well.i know its not the regulator cuz i pulled 25 psi vaccum steady off of it and it didnt move so its not the diaphram. the vaccum on the other hand is only reading 15 psi so could that be the problem.and also all this is happening and there has been NO check engine light.so wtf.
08-28-2006, 02:11 AM
#7
Thread Starter
Join Date: Aug 2006
Posts: 4
RE: ok.I NEED SERIOUS HELP!!!
ok.i dont know if i just ****ed something up or i just found my problem.i just unplugged and plugged back in the map and now the car wont turn over at all.it starts for less then a second then stalls out.could it be the MAP sensor?
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