Gasman
n00b
Reputation Power: 0
 Offline
Gender: 
Posts: 8
|
 |
« on: October 18, 2011, 03:26:55 PM » |
|
 Hi Everyone! Here's my story & I hope you can help...please? This car has 170K on it and has been maintained regularly. It has run well up until now! It has developed a miss at idle & also when it shifts into overdrive at freeway speeds. It has been using a lot more fuel and the power is way down as well. As a preface, I am a fairly competent mechanic & I am armed with the manual for this vehicle. I have checked all of the obvious areas where a miss might occur, plugs & wires, fuel filter & pressure, vacuum leaks & vacuum reading, ignition module & coil packs, compression & EGR system too. In all of these checks & tests the results been within specs! The next thing to check I figure is the actual fuel injectors, but I have not wanted to go that far unless I have to. Does anybody know of an easier way to check the injectors? Or maybe have any other thoughts on what this thing is up too? Thanks in advance... Gasman
|
|
|
|
|
Logged
|
|
|
|
|
94 olds vert
|
|
« Reply #1 on: October 18, 2011, 03:31:34 PM » |
|
You can OHM the injectors. With them in the vehicle. You have the 3100?
They should come out to over 12+ ohms. Anything less than that and I'd say they are bad. All you need is to stick a volt meter into the male ends of the injectors.
|
|
|
|
|
Logged
|
 1994 Cutlass convertible 1991 Grand Prix GT |
|
|
Gasman
n00b
Reputation Power: 0
Offline
Gender:
Posts: 8
|
|
« Reply #2 on: October 18, 2011, 03:36:04 PM » |
|
Yes it has the 3100, do you have to take off the intake to get to them?
|
|
|
|
|
Logged
|
|
|
|
|
94 olds vert
|
|
« Reply #3 on: October 18, 2011, 05:25:48 PM » |
|
Yeah, the top intake probably has to come off. At that time you might want to do those gaskets while your there.
|
|
|
|
|
Logged
|
1994 Cutlass convertible 1991 Grand Prix GT |
|
|
Gasman
n00b
Reputation Power: 0
Offline
Gender:
Posts: 8
|
|
« Reply #4 on: October 24, 2011, 07:50:14 PM » |
|
OK so here we are back with an update! I have performed the test for injectors in the manual, which is put a screwdriver tip on the injector/ listen through the handle for the injector "click" while the engine is running. I heard nothing, no clicks etc. At last check I am not deaf so WTF? I proceed to remove the top of the intake to actually get to the injectors, get them out & test with a meter...they all read right about 12.3 ohms and appear to be clean "tip wise". So whats next...is there any other way to test them? Everything I have tested/ checked on this engine is showing up as good...where is this miss at? Arrrrrrgggghh
Hey thanks guys
|
|
|
|
|
Logged
|
|
|
|
|
94 olds vert
|
|
« Reply #5 on: October 25, 2011, 02:45:16 PM » |
|
12.3 is good for the injectors. You said you checked fuel pressure. If you don't me asking, what was it?
I'm not too sure what else it could be. Maybe an IAC or TPS sensor that is on the way out. Usually those can be cleaned and put back in. Not sure if they would cause a SES unless they were completely bad.
|
|
|
|
|
Logged
|
1994 Cutlass convertible 1991 Grand Prix GT |
|
|
Gasman
n00b
Reputation Power: 0
Offline
Gender:
Posts: 8
|
|
« Reply #6 on: October 25, 2011, 03:58:30 PM » |
|
Fuel pressure was a steady 40 psi, vacuum rock steady at 15 inches. Also, no SES has ever been triggered...that has me scratching my head too?
Gasman
|
|
|
|
|
Logged
|
|
|
|
|
94 olds vert
|
|
« Reply #7 on: October 25, 2011, 04:46:49 PM » |
|
Yup 40psi is perfect and vac. pressure is good too. That is really confusing.
|
|
|
|
|
Logged
|
1994 Cutlass convertible 1991 Grand Prix GT |
|
|
|
SofaKingWeToddDid
|
|
« Reply #8 on: October 25, 2011, 05:11:31 PM » |
|
ive heard of torque converters malfunctioning and causing a car to feel like a misfire and surge while driving and shit...
|
|
|
|
|
Logged
|
|
|
|
|
94 olds vert
|
|
« Reply #9 on: October 25, 2011, 05:25:00 PM » |
|
A clogged cat can cause all sorts of problems?
If it gets red hot after the car has been driving a while it's probably bad.
|
|
|
|
|
Logged
|
1994 Cutlass convertible 1991 Grand Prix GT |
|
|
|
SofaKingWeToddDid
|
|
« Reply #10 on: October 25, 2011, 05:37:26 PM » |
|
that too, get rid of it! haha
|
|
|
|
|
Logged
|
|
|
|
|
94 olds vert
|
|
« Reply #11 on: October 26, 2011, 03:54:14 AM » |
|
I got rid of mine, but I don't have emissions where I live.
|
|
|
|
|
Logged
|
1994 Cutlass convertible 1991 Grand Prix GT |
|
|
Gasman
n00b
Reputation Power: 0
Offline
Gender:
Posts: 8
|
|
« Reply #12 on: October 26, 2011, 09:40:26 AM » |
|
No chance of getting rid of the cat...they just brought back emissions here! I have checked the exhaust flow at the tailpipe & it seems normal...I know that's not very scientific but it doesn't seem restricted in any way? As far as the torque converter goes, the tranny was rebuilt about 25K ago and the car has the miss when it's out of gear too...sooooo fark!!
|
|
|
|
|
Logged
|
|
|
|
|
Chris
|
|
« Reply #13 on: October 26, 2011, 10:34:01 AM » |
|
I've had the ICM & coils check out OK, but them still be the problem.
|
|
|
|
|
Logged
|
 ive fucked more black guys than fema!
|
|
|
Gasman
n00b
Reputation Power: 0
Offline
Gender:
Posts: 8
|
|
« Reply #14 on: October 26, 2011, 11:19:48 AM » |
|
Really? Well I have an extra set I picked up at the JY, maybe I'll give it a try...hell it can't hurt at this point! I'll keep you posted...
Thanks
Gasman
|
|
|
|
|
Logged
|
|
|
|
|
Topic: My POS 95 Cutlass Supreme SL has a miss thats pissing me off! (Read 1609 times)
