20 Most Recent 1991 Ford Mustang - Page 7 Questions & Answers

Visit http://www.netlink.net/mp/volks/htm/spark.htm

You don't say if you replaced the electrical ignition switch or the key and tumbler. You should have done the electrical part. The main problem you have is you are replacing parts and not fixing the problem. These types of problems are tough due to the fact the problem is not always there. You need To determine the main cause. What do you have to do to start the car when the failure occurs? You may have a dead spot in the starter it self, a bad copnnection at the battery, starter or the grounds. I know it is not easy but try to determine the problems cause then you'll save money on the parts.

Call Eric Swarr CALL 610-489-4029 or check out the website, swarrauto.com He does mostly mustangs, SCCA, and Road Race cars. I know 2 mechanics there, they have a 2wd dyno, and they will tune your specific applications however you want. Its in PA so if your not close I can get you help from where you are. -Steve 484-614-7986

Bad ign switch, not the key switch, the one down on the column. good luck

transmission synchronizer Is bad..

Yeah - mine keeps shrinking

Hello,

First thing.. take the fuel lines loose and turn the key to the on posistion and see if the fuel comes out of the line. It sounds to me like you may have fuel pump issues...

Sounds to me like the clutch disc is shot. Make sure there is a little bit of play in the pedal at the top of travel. If you put your foot on the pedal and there isn't any play at the top then the clutch may not be engaging all the way (and you may have burned up the clutch from the slippage). Good Luck,...ZMANRACING

are you talking about the rev limiter doing it's job when the car is sitting,or are you going down the road when this happens

I have a mustang and a common problem with the headlights is the in dash switch goes bad play around with the switch turning it on and off firmly and see if you get the lights to come and replace the switch ......also the headlights have a relay for them to located in the front around the lights trace the wires to locate the relay ...Hope this helps you out

Dear Bogger.......First off......congrats on havin a pony!!!! I've always loved those vehicles....and let's get to the nitty gritty on the thing...the first thing that i want you to do is pop open the hood on her and pull off the vaccuum line off of the fuel pressure regulator.If there is fuel coming out of the regulator where the vacuum line goes then there we have it...There should be no fuel at all comin out of the regulator where the vacuum line connects. If you see fuel comin out or you can smell fuel in there....that regulator has failed and it's loadin up the cylinders.....after you inspect that then check your fuel pump pressure by tappin into the fuel pressure rail. Fyi...the regulator is on top of your fuel rail ...if that part has failed then it's a 40 dollar fix at autozone or checker auto parts...please get back to me if ya have anymore concerns with your baby!!!!! I HOPE I COULD HELP!!!!

All the parts that don't work anymore on the car!!

Did you check the wiring when you replace the switch? Some times the plug that you plug into the light will be melted or burnt. I know cause I had 2 - 5.0 stangs and both did the samething. Is the car equip with fog lights? If so I would disconnect them. I found that the fog lights on my 89 gt cause the head light switch to over heat and melt. On both I had to repair the wiring at the plug.

headlight bulb housing.

Go to your local Napa parts store. They should be able to print you out the wiring diagram for your vehicle. Or you can buy a repair manual.

Yes, if not the problem check fuel pump pressure

Headlights normally are not fused, if yours don't work check the switch.

you going to have to take it apart to get to it, is not that hard but time consuming; the parts is cheap. The common problems with those is the regulator is worned and need replacing. regulator is a window track, it keep the window in it track and when it become worned it get sloppy. hope that help some

How do you know the fuel pump is not getting power?.The fuel pump only comes on for a second or two before cutting back off.The ecm only suppys power to the relay for a few short seconds with key in the on position.Only constant 12 volts is supplied when the engine is running.Is the fuel pump new?How do we know it is good?Also is the engine giving a spark when the engine is turning over?If the engine has no spark,then the pick up coil could be bad,otr the ignition module could be bad.Check the fuel at the injsctors or a fuel line to see if the fuel will pump out when the key is turned on,if it does not,then check to see if the ijectors are pulsing.If the injectors are not pulsing ,and you have spark,then remove the distributor and replace the pick up coil,and the ignition module.The pick up coil,along with the igniyion module give the injectors there pulse.One other thing,If the fuel pump is not for sure coming on,check to see if the relay is clicking on,and then off in a couple of seconds.If this is true,then replace the fuel pump.Any other questons,please ask,I will try to help if I can.I hope this was some help,let me know,thanks.