87blyota

alright a couple of months ago my 87 22r pickup was acting up after it got warm it would buck when taking off. i replaced the cap rotor plugs ignition coil and wires it seemed to help well today on my way back to school after about 1.5hr of driving in a 55 it start bucking really bad and if i pushed in the clutch it would die so pretty much had to keep pooring it gas on the way back. when i got back i unloaded my stuff so about 15min later i went out pumped the pedal a few times it fired up died i started it again gave it a little gas and it would idle. I went driving around with now problems. The only thing i can think of is the fuel pump got hot but looking at the sight glass after it cooled down and was idling it was fine. I know the timing is right i have already checked that im completely lost. all help would be appreciated

87blyota

due to it being a heat issue it seems like any chance its the ICM i really hope it isnt.....

Shady Cadence

The icm wouldn't care if you were on the throttle or not, so it most likely isn't it.

87blyota

OK cause it would sputter and buck bad if I let it drop bellow 2500rpm but if I pushed in the clutch to coast or stop as soon as it reached 1200-1000 rpm it would die. Pump the gas a few times and itd fire back up

87blyota

made a short trip not even 1/4 mile and it acted up again same thing bucks when accelerating unless poring it the gas (over 3000 rpm taking off) cant push in the clutch unless i keep reving it or it dies.

Shady Cadence

Check the vacuum hose to your auxiliary accelerator pump. If its got gas in it, you've ruptured the diaphragm.

87blyota

I checked that a while ago the nipple thing that the hose connects to (assuming I'm pulling the right hose) doesn't have a hole that I could feel on it its just a smooth dome

bswarm

If I recall correctly, there's a fuel cut solenoid. If it fails or loses power it cuts off fuel to the idle circuit.

87blyota

I've been reading up on that do you know of a way to bypass it?

bswarm

See if it has power at the wire that goes to it first. Some models have 12v going to it, others have 5v (from ecm) so use a voltmeter and not a test light. Might be you only blew a fuse. You should hear or feel it click when you disconnect the wire with the key on. If you bypass it, it might diesel when you shut the engine off.

87blyota

Got it if it stops raining I'll try it tomorrow. I can't find a part number to order a new one if I have to do you happen to have it?

bswarm

You'll have to get the carb number and/or determine if it's a 12volt or 5volt solenoid. I can't find a listing on Amazon for an 87, it says it's fuel injection. You do have a carb right?

87blyota

Yes I'm positive

bswarm

Well, if you want to bypass it for testing purposes, you can unscrew the solenoid and remove the oring at the tip, then put it back in and see if it idles. It might diesel (like I said) when you shut the engine off though.

87blyota

Well been driving it around today no dying or bucking but does miss between 2500 and 3000 rpm this has me stumped

grumpin

I don't remember, have you checked your ignition coil?

87blyota

Already replaced it. Back to the fuel cut solenoid it was wired in kind of weird so I rewired it and so far so good. Fingers crossed

grumpin

OK, great! So it quit sputtering and dying with the rewire of that solenoid?

87blyota

So far I havnt had a lot of time to go drive it