Nope, not similar, the SAME. Numbers and everything. Been there done it.
My Jeep hard starts real bad when cold then when it finally starts it runs real ruff and the exhaust smells extremely rich. It also dies out and the rpm run up and down almost to the point of dieing. Could the ASD cause this?
FWIW when I swapped the TBI for the MPI 2.5 last year the old motor did not have the ASD relay. I couldn't get that part of the harness from the donor and just used a standard 30amp relay for it. A relay is a relay...they all work the same but some have a higher currant rating. Been running it as a DD for 6 months now and no problems with anything.
l We're here for a good time. Not a long time. So have a good time the sun can't shine every day.
Thanks for all the help and suggestions guys. The reason I'm fixating on the ASD is the Jeep will NOT start at all until I leave the key in the on position for a minute or two then the ASD relay starts clicking for about 30 secs. When it starts clicking the check engine light starts flashing then turns solid. After all that happens the Jeep fires right up but dies out a couple seconds later. After a couple more tries it will stay running but runs super rough and the RPMs jump up and down and the exhaust smells very rich. The ASD may not be the cause of my problem but its defiantly related to it. I figured I'd start there. Haven't been able to work on it because I've been off island.
Turns out it was the computer. Had it replaced and now it starts right up and run fine at idle to about 18oorpms. After that if you give it gas it has no power. There's a very loud hiss coming from what I think is the IAC. It seems like the motor wants to rev but somethings holding it back. Does anyone know what a malfuntioning IAC would cause? Or could my cat be clogged up?
When my IAC went bad the idle would fluctuate wildly. I don't know if the IAC would have much effect when you are out of the idle range.
When my cat finally broke apart enough for the pieces to get sideways and clog the exhaust flow, the tone of the exhaust sounded very muffled and the Jeep wouldn't go over 20 mph. Before it got this bad the pieces would rattle loudly.
'96 ZJ, 4.0L, 42RE, NP242, stock D30 and D35-LS w/ 3.73, 4-1/2" lift, 32" BFG ATs, Magnaflow, JKS track bars and disconnects, spare tire carrier, Optima red top, ROLA roof rack, KC SlimLite driving lights, CB and Yaesu ham radios, GPS
Last edited by ZJJay; 04-10-2010 at 12:26 AM..
Reason: Correct another darn typo.