Old 94 Turquoise
Newbie
Okay wanted to see some other people’s input on a problem I’m having with my 1994 1500 350Tbi . When I first start the truck up the oil pressure is about 40 but then after it warms up and I’m idling in drive , the pressure goes down to about 10 or almost touching the red. Also my rpms go down to about 300 then sometimes the engine will stumble and drop to about the first dash mark and just for half a second and then go back up to 250-300. If I put in in nuetral or park it’s about 500 . So under load it idles low. It runs good when I’m driving . Could it be oil sending unit?? As for the low idle problem maybe clean the IAC?? Just want to see what you guys think.
The picture is when I first start the truck up.
The picture is when I first start the truck up.
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