95 Mustang frustration

Billy50H · Apr 9, 2011

So my car has been running fine for a while then all of the sudden the idle surges, check engine light comes on and off randomly, sometimes it dies, and every now and then has a "hiccup" like it misfires. I cleaned the IAC, adjusted the TPS voltage, cleaned the MAF sensor, and reset the base idle which didnt help. So HELP! :crybaby2:

Proffitt95gt · Apr 9, 2011

mine does same thing. sounds like it has a cam at idle once you let it sit for a few seconds. just started doin it 3 months ago.

russ8825 · Apr 9, 2011

Have you checked for a vacume (sp?) leak ? those cause a lot of those problems.

CC'S95GT · Apr 9, 2011

how old is your disttributor?
Do you have any other mods?
What were the codes for?

auto_x5.0 · Apr 10, 2011

Check coil, clean maf meter, and change plugs...my car had the same problem, I did all that and it felt like I gained a little chunk of power back and it pulls hard to 6000rpm now

Billy50H · Apr 10, 2011

I replaced the coil with msd, got frpp plug wires, new plugs, ignition control mudule, new coil pick up wire, and a replacement distributor which were all put in last august or later. Im gonna pull the codes today and hopefully have some luck with that. I doubt its a vacuum leak because the car had a similar problem but I'll look into it. Thanks for the help!

Billy50H · Apr 10, 2011

I pulled the codes and it showed 157 which is for the MAF sensor so im gonna have to change that. I tested it and theres plenty of power going in the sensor but not much comes out.

toyman · Apr 10, 2011

At idle the signal volts are between 0.2 to 1.5v and at 60 mph only 2.0v. Since you can't test at 60 mph you want to see a fluctuation in voltage as the engine speed increases.

bonestock3.8DTH · Apr 10, 2011

Id still check for vaccum leaks because today (I know its not a Mustang) but my brothers s10 was doing the same thing and it sent a MAF code and it was just a vaccum line.

Billy50H · Apr 10, 2011

bonestock3.8DTH said:
Id still check for vaccum leaks because today (I know its not a Mustang) but my brothers s10 was doing the same thing and it sent a MAF code and it was just a vaccum line.

Its an intermittent so is it possible for a vacuum leak to be that way?
and as to toyman the volts were only around .065v