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Fri May 11, 2012 4:22 am

its my 91 2.1 i added a vdo psi gauge kit with 4 way port so you use the oem sender, but the light keeps flashing even with two new senders. i even swaped the instrument cluster that was working normal and still it flashes. ok so when its cold the psi gauge reads 60-70 psi as it warms abou 15-20 miles the lght acts like it wants to go out, but if i does go out the slightest pressure to the gas pedal, the lights back flashing :? i'm using mann filters and 10w40 changed oil and used a napa gold.

Fri May 11, 2012 5:42 am

Is the 4 way port connected by a hard line or flexible one?
How far from the case is the sender now?
Tencent uses a very precisely bent copper line to his relocated senders and I measured the pressure at both locations and they were spot on.
Well worth the $45 he charges for the setup.

Fri May 11, 2012 7:34 am

I have a reuilt 2.1 and experience the flickering oil light at idle after a highway run (steady 3200 rpm). The shop checked the idle pressure while hot, OK, and replaced the sender; no change.
I saw a post about how the original owner's manual said this is normal, so I stopped worrying about it.
When I did my last oil change I went to 20x50 and a Napa Gold. So far, no light. I really believe that 10 weight is just too thin, period. Many folks I see use the diesel oil; 15x40. That seems like a nice compromise.

Fri May 11, 2012 7:51 am

2.1 engines have two different style of senders, one normal open and one normal closed. Sure you don't have the wrong style on there?

Fri May 11, 2012 8:59 am

Wildthings wrote: 2.1 engines have two different style of senders, one normal open and one normal closed. Sure you don't have the wrong style on there? i am 100% sure i have the right ones i'm changing to 20-50 and a mobil 1 filter and see if that helps

Fri May 11, 2012 9:04 am

What does the light do when it acts like it's going out?...Is it on at idle? Above 2300rpm? What does your gauge say hot?
Jeff

Fri May 11, 2012 9:12 am

devesvws wrote: Wildthings wrote: 2.1 engines have two different style of senders, one normal open and one normal closed. Sure you don't have the wrong style on there? i am 100% sure i have the right ones i'm changing to 20-50 and a mobil 1 filter and see if that helps

If you have good oil pressure on your gauge now, I don't see how running thicker oil will do you any good. 10 psi per 1000 rpms on a fully warmed up engine is a good rule.

Fri May 11, 2012 10:45 am

the problem is as it warms up, the psi is only reading 10-20 psi. where is the info on the pressure relief valve in the bentley book :?: i might swap out the spring but can find it in the book.

Fri May 11, 2012 10:51 am

When you first turn the key on but don't start your engine what is the light doing?

You are only getting 10-20 psi at what rpm?

Fri May 11, 2012 4:51 pm

it blinks on for a quick second, and the psi was 20 at 3000 rpms. i changed the oil to 20-50 and its like 30 psi at 3000.